Abstract:
To plan a social event, corresponding to a first invitee from an invitees list for the social event, a permission by the first invitee to obtain preference information from a data source is received. The preference information is usable to determine a sentiment of the first invitee towards an aspect of the social event. The information about the first invitee is collected from the data source. A sentiment analysis is performed using Natural Language Processing (NLP), on the information, producing the preference information of the first invitee. the preference information of the first invitee is aggregated with preference information of a second invitee in the invitee list to form an aggregated preference. A list of items needed to satisfy the aggregated preference is created.

Description:
TECHNICAL FIELD 
       [0001]    The present invention relates generally to a method, system, and computer program product for planning a social event. More particularly, the present invention relates to a method, system, and computer program product for sentiment analysis and inventory based event planning. 
       BACKGROUND 
       [0002]    Natural language processing (NLP) is a technique that facilitates exchange of information between humans and data processing systems. For example, one branch of NLP pertains to transforming human readable content, such as unstructured data, into machine usable data. For example, NLP engines are presently usable to accept input content such as a newspaper article or a whitepaper, and produce structured data, such as an outline of the input content, most significant and least significant parts, a subject, a reference, dependencies within the content, and the like, from the given content. 
         [0003]    Social media comprises any medium, network, channel, or technology for facilitating communication between a number of individuals and/or entities (users). Some common examples of social media are Facebook or Twitter, each of which facilitates communications in a variety of forms between large numbers of users (Facebook is a trademark of Facebook, Inc. in the United States and in other countries. Twitter is a trademark of Twitter Inc. in the United States and in other countries.) Social media, such as Facebook or Twitter allow users to interact with one another individually, in a group, according to common interests, casually or in response to an event or occurrence, and generally for any reason or no reason at all. 
         [0004]    Some other examples of social media are websites or data sources associated with radio stations, news channels, magazines, publications, blogs, and sources or disseminators of news or information. Some more examples of social media are websites or repositories associated with specific industries, interest groups, action groups, committees, organizations, teams, or other associations of users. 
         [0005]    Data from social media comprises unidirectional messages, or bi-directional or broadcast communications in a variety of languages and forms. Such communications in the social media data can include proprietary conversational styles, slangs or acronyms, urban phrases in a given context, formalized writing or publication, and other structured or unstructured data. 
         [0006]    Social media stores information about its users, including their preferences and contributions or interactions with the social media. For example, a user of a social media website has a profile, which includes a set of attributes. The profile attributes in a user profile capture a variety of information about the user, including but not limited to the user&#39;s name, location, address, marital status, nationality, age, gender, interests, likes, dislikes, preferences, and so on. 
         [0007]    A user&#39;s contributions or interactions with the social media can include any type or size of data. For example, a user can post text, pictures, videos, links, or combinations of these and other forms of information to a social media website. Furthermore, such information can be posted in any order, at any time, for any reason, and with or without any context. 
         [0008]    Event planning is the process of arranging social events, such as a gathering of invited guests—the invitees. An invitee may, but need not necessarily be, a social media user. An invitee may, but need not necessarily store information, or cause information about the invitee to be stored at another information source. 
       SUMMARY 
       [0009]    The illustrative embodiments provide a method, system, and computer program product for sentiment analysis and inventory based social event planning. An embodiment includes a method for social event planning. The embodiment receives, corresponding to a first invitee from an invitees list for a social event and a permission by the first invitee to obtain preference information from a data source, the preference information being usable to determine a sentiment of the first invitee towards an aspect of the social event. The embodiment collects, from the data source, information about the first invitee. The embodiment performs, by using a processor and a memory, using Natural Language Processing (NLP), a sentiment analysis on the information about the first invitee, the sentiment analysis producing the preference information of the first invitee. The embodiment aggregates the preference information of the first invitee with preference information of a second invitee in the invitee list to form an aggregated preference. The embodiment creates a list of items needed to satisfy the aggregated preference. 
         [0010]    Another embodiment includes a computer program product for social event planning, the computer program product comprising one or more computer-readable storage devices, and program instructions stored on at least one of the one or more storage devices. 
         [0011]    Another embodiment includes a computer system for social event planning, the computer system comprising one or more processors, one or more computer-readable memories, and one or more computer-readable storage devices, and program instructions stored on at least one of the one or more storage devices for execution by at least one of the one or more processors via at least one of the one or more memories. 
     
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
         [0012]    The novel features believed characteristic of the invention are set forth in the appended claims. The invention itself, however, as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the following detailed description of the illustrative embodiments when read in conjunction with the accompanying drawings, wherein: 
           [0013]      FIG. 1  depicts a block diagram of a network of data processing systems in which illustrative embodiments may be implemented; 
           [0014]      FIG. 2  depicts a block diagram of a data processing system in which illustrative embodiments may be implemented; 
           [0015]      FIG. 3  depicts a block diagram of an example configuration for sentiment analysis and inventory based event planning in accordance with an illustrative embodiment; 
           [0016]      FIG. 4  depicts a block diagram of an application for sentiment analysis and inventory based event planning in accordance with an illustrative embodiment; and 
           [0017]      FIG. 5  depicts a flowchart of an example process for sentiment analysis and inventory based event planning in accordance with an illustrative embodiment. 
       
    
    
     DETAILED DESCRIPTION 
       [0018]    Only as an example, and without implying any limitation thereto, the illustrative embodiments are described using certain social media sources and other information sources. Those of ordinary skill in the art will be able to adapt an embodiment to operate with other similarly purposed sources of data, and the same are contemplated within the scope of the illustrative embodiments. 
         [0019]    Consider, for example, a get-together as a planned event. The event is planned using any of the existing event planning applications, tools, websites, or mobile apps (collectively, hereinafter, “event management tool”). The event management tool creates a list of invitees, such as by enabling a host user to create an invitee-list using a user interface of the event management tool. 
         [0020]    Each invitee may have differing preferences on the food they like, dietary restrictions, drink preferences, music likings, and other preferences. A common problem with event planning is that the host of the event has to know these preferences of the invitees so that the event is to the invitees&#39; satisfaction. 
         [0021]    The illustrative embodiments recognize that presently, event management tools provide no feature or method to learn the preferences of the invitees automatically. For example, some event management tools require the host user to guess or input one or more preferences of one or more invitees. Some other event management tools ask the invitees to input their preferences with their invitation acceptance. 
         [0022]    The illustrative embodiments recognize that such a manner of planning an event according to invitees&#39; preferences is cumbersome, onerous, and error-prone. A solution for automatically determining the invitees&#39; preferences, and determining how to accommodate those preferences given the resources available to the host, is therefore desirable. 
         [0023]    The inventors are unaware of any general recognition of these problems by fellow practitioners. The illustrative embodiments used to describe the invention generally address and solve the above-described problems and other problems related to determining invitee preferences for event planning. The illustrative embodiments provide a method, system, and computer program product for sentiment analysis and inventory based event planning. 
         [0024]    The illustrative embodiments recognize that many invitees are social media members. Accordingly, the illustrative embodiments recognize that an invitee is likely to have configured or expressed at least some of the preferences on a source of social media information. For example, an invitee may expressly indicate a style of music preference in a social media profile of the invitee, and may state a food allergy in a social media interaction with others. 
         [0025]    The illustrative embodiments further recognize that some invitees are also participants in other types of information sources. For example, an invitee may log their beverage preferences at Untappd.com, their food preferences in Foodie.com, and their music preferences in Spotify.com (Untappd.com is a website and Untappd is a trademark owned by Untappd LLC. Foodie.com is a website and trademark owned by Mode Media Corporation. Spotify.com is a website and Spotify is a trademark owned by Spotify USA Inc.) 
         [0026]    Generally, within the scope of the illustrative embodiments, a social media source is data source that can provide social media information about a preference an invitee, and an information source is any other type of data source that can provide information about a preference of an invitee. A preference of an invitee is any preference that chooses one or more choices from a plurality of choices available for an aspect of a planned event. Such aspects of the planned events include but are not limited to food choices, drinks choices, music styles or tracks choices, clothing styles choices, event theme choices, event topic or subject choices, and the like. 
         [0027]    An embodiment creates and maintains a list of social media sources and other information sources (hereinafter, the source list). The embodiment also creates and maintains a profile for an invitee. In one embodiment, the profile stores one or more permissions from the invitee to access one or more corresponding social media source or other information source in the source list and obtain the invitee&#39;s information. 
         [0028]    An embodiment collects the invitees&#39; information from one or more such permitted sources. Note that the invitee&#39;s information from such sources may not directly be usable as the invitee&#39;s preference. 
         [0029]    When a preference of the invitee is not expressly indicated in the collected information, the embodiment submits the collected information to an NLP engine for sentiment analysis. Sentiment analysis is a type of NLP analytics, which, given a collection of information, identifies an underlying inclination or distancing, aversion or attraction, like or dislike, and other similar sentiments towards a given subject in that information. 
         [0030]    For example, NLP of Facebook status updates of an invitee may indicate that the invitee suffers from high cholesterol and is on a restricted low-fat diet. Similarly, in another example, NLP of tweeted messages may indicate that an invitee is vegetarian. As another example, an analysis of beverages checked on Untappd may indicate that an invitee enjoys cola and juices, and an analysis of favorite artists listed in Spotify may indicate that an invitee enjoys Classic Rock music. 
         [0031]    For the invitees who do participate in a source in the source list, and who have permitted access to their information at such sources, the embodiment identifies the invitees&#39; preferences for various aspects of the event by collecting the invitees&#39; information from the permitted sources, performing sentiment analysis on the collected information. For those invitees who do not participate in any source in the source list, or who have not permitted access to the sources in which they do participate, the embodiment attempts to collect information about the invitees that is publicly available from sources in the source list. The embodiment can also optionally collect similar publicly available information about those invitees whose profiles include permissions to access some sources in the source list. 
         [0032]    The embodiment attempts to identify an invitee&#39;s preference from such publicly available information as well. The publicly available information collected in this manner is also subjected to sentiment analysis. 
         [0033]    Given a set of invitees, an invitee can have zero to n preferences, some preferences about a particular event aspect may be common to a subset of the invitees, a preference about a particular event aspect may be unique to an invitee, or some combination of these and other variations of the preferences. Once a set of preferences is known about the set of invitees, the embodiment assigns confidence values to the various preferences about each event aspect that is under consideration. For example, the embodiment may indicate 73 percent confidence that most invitees enjoy Vegetarian Indian cuisine, 54 percent confidence that at least half of all invitees enjoy seafood, 85 percent confidence that most invitees enjoy cola, 95 percent confidence that all soda drinkers enjoy fruit juices, and 69 percent confidence that all invitees enjoy Classic Rock. 
         [0034]    Using a user interface, the embodiment presents the host user with a list of recommendations based on the analysis and confidence ratings. The host selects one or more of the recommendations. For example, given the above example preferences and confidence ratings, the embodiment recommends a menu that contains a mixture of seafood, and vegetarian Indian cuisine, a case of cola and two jugs of orange juice, and Classic Rock as the musical preference for the event. The host may select all, some, or none of the recommendations. 
         [0035]    Based on the confidence rated preferences and the selections made by the host, the embodiment assists the host with one or more of shopping lists, music playlists, and the like. For example, an embodiment can connect to a user&#39;s home network to determine which food and drink items are already in stock in the house and create a shopping list for only the remaining items. For example, the embodiment computes a present inventory of food items in storage and in a refrigerator. The embodiment compares the food and drink items needed for the event with the computed inventory. Based on the comparison, the embodiment creates a shopping list of items not available in the inventory and likely to be needed for the event. Optionally, the embodiment can also compute and add non-food items, such as dish detergent and plastic beverage cups, to the shopping list. 
         [0036]    As another example, the embodiment can connect to a music subscription service and send instructions to create a customized playlist based on the determined musical preferences of the invitees. For example, the embodiment can send instructions to Spotify to create a playlist for Classic Rock style music based on the music preference with the highest confidence rating. 
         [0037]    A method of an embodiment described herein, when implemented to execute on a device or data processing system, comprises substantial advancement of the functionality of that device or data processing system in automated invitee-preference determination for event planning. For example, where prior-art is limited to asking each invitee his or her preference, an embodiment automatically analyzes social media and other information sources to determine and confidence-rate the preferences of the event invitees. The embodiment further creates one or more lists to assist in planning and successful execution of the event in satisfaction of the invitees&#39; preferences. Operating in a manner described herein, an embodiment significantly reduces the effort on the part of the event host, and improves the satisfaction of the invitees from the event. Such manner of extracting sentiments and preferences is unavailable in presently available devices or data processing systems. Thus, a substantial advancement of such devices or data processing systems by executing a method of an embodiment improves event planning operations. 
         [0038]    The illustrative embodiments are described with respect to certain even planning tools, events, aspects of events, preferences, social media sources, other information sources, collected information, NLP analyses, preferences, confidence ratings, recommendations, user interfaces, devices, data processing systems, environments, components, and applications only as examples. Any specific manifestations of these and other similar artifacts are not intended to be limiting to the invention. Any suitable manifestation of these and other similar artifacts can be selected within the scope of the illustrative embodiments. 
         [0039]    Furthermore, the illustrative embodiments may be implemented with respect to any type of data, data source, or access to a data source over a data network. Any type of data storage device may provide the data to an embodiment of the invention, either locally at a data processing system or over a data network, within the scope of the invention. Where an embodiment is described using a mobile device, any type of data storage device suitable for use with the mobile device may provide the data to such embodiment, either locally at the mobile device or over a data network, within the scope of the illustrative embodiments. 
         [0040]    The illustrative embodiments are described using specific code, designs, architectures, protocols, layouts, schematics, and tools only as examples and are not limiting to the illustrative embodiments. Furthermore, the illustrative embodiments are described in some instances using particular software, tools, and data processing environments only as an example for the clarity of the description. The illustrative embodiments may be used in conjunction with other comparable or similarly purposed structures, systems, applications, or architectures. For example, other comparable mobile devices, structures, systems, applications, or architectures therefor, may be used in conjunction with such embodiment of the invention within the scope of the invention. An illustrative embodiment may be implemented in hardware, software, or a combination thereof. 
         [0041]    The examples in this disclosure are used only for the clarity of the description and are not limiting to the illustrative embodiments. Additional data, operations, actions, tasks, activities, and manipulations will be conceivable from this disclosure and the same are contemplated within the scope of the illustrative embodiments. 
         [0042]    Any advantages listed herein are only examples and are not intended to be limiting to the illustrative embodiments. Additional or different advantages may be realized by specific illustrative embodiments. Furthermore, a particular illustrative embodiment may have some, all, or none of the advantages listed above. 
         [0043]    With reference to the figures and in particular with reference to  FIGS. 1 and 2 , these figures are example diagrams of data processing environments in which illustrative embodiments may be implemented.  FIGS. 1 and 2  are only examples and are not intended to assert or imply any limitation with regard to the environments in which different embodiments may be implemented. A particular implementation may make many modifications to the depicted environments based on the following description. 
         [0044]      FIG. 1  depicts a block diagram of a network of data processing systems in which illustrative embodiments may be implemented. Data processing environment  100  is a network of computers in which the illustrative embodiments may be implemented. Data processing environment  100  includes network  102 . Network  102  is the medium used to provide communications links between various devices and computers connected together within data processing environment  100 . Network  102  may include connections, such as wire, wireless communication links, or fiber optic cables. 
         [0045]    Clients or servers are only example roles of certain data processing systems connected to network  102  and are not intended to exclude other configurations or roles for these data processing systems. Server  104  and server  106  couple to network  102  along with storage unit  108 . Software applications may execute on any computer in data processing environment  100 . Clients  110 ,  112 , and  114  are also coupled to network  102 . A data processing system, such as server  104  or  106 , or client  110 ,  112 , or  114  may contain data and may have software applications or software tools executing thereon. 
         [0046]    Only as an example, and without implying any limitation to such architecture,  FIG. 1  depicts certain components that are usable in an example implementation of an embodiment. For example, servers  104  and  106 , and clients  110 ,  112 ,  114 , are depicted as servers and clients only as example and not to imply a limitation to a client-server architecture. As another example, an embodiment can be distributed across several data processing systems and a data network as shown, whereas another embodiment can be implemented on a single data processing system within the scope of the illustrative embodiments. Data processing systems  104 ,  106 ,  110 ,  112 , and  114  also represent example nodes in a cluster, partitions, and other configurations suitable for implementing an embodiment. 
         [0047]    Device  132  is an example of a device on which a user interface  134  can be presented as described herein. For example, device  132  can take the form of a smartphone, a tablet computer, a laptop computer, client  110  in a stationary or a portable form, a wearable computing device, or any other suitable device that can be configured with user interface  134 . Any software application described as executing in another data processing system in  FIG. 1  can be configured to execute in device  132  in a similar manner. Any data or information stored or produced in another data processing system in  FIG. 1  can be configured to be stored or produced in device  132  in a similar manner. Event management tool  103  is an existing event management tool usable for planning an event as described herein. For example, in an existing event planning process, event management tool  103  is configured to create and manage a list of invitees. Application  105  operates in conjunction with event management tool  103  and uses NLP engine  107  as described herein. Application  105  uses profiles  109 A, which include one or more profiles of an invitee on the invitee list. Source list  109 B includes sources of information about the invitees, such as social media sources and other information sources, to which application  105  has access. Social media sources  111  and  113  are example sources listed in source list  109 B. Information source  115  is an example of other sources, such as Spotify, that are also included in source list  109 B. 
         [0048]    Servers  104  and  106 , storage unit  108 , and clients  110 ,  112 , and  114  may couple to network  102  using wired connections, wireless communication protocols, or other suitable data connectivity. Clients  110 ,  112 , and  114  may be, for example, personal computers or network computers. 
         [0049]    In the depicted example, server  104  may provide data, such as boot files, operating system images, and applications to clients  110 ,  112 , and  114 . Clients  110 ,  112 , and  114  may be clients to server  104  in this example. Clients  110 ,  112 ,  114 , or some combination thereof, may include their own data, boot files, operating system images, and applications. Data processing environment  100  may include additional servers, clients, and other devices that are not shown. 
         [0050]    In the depicted example, data processing environment  100  may be the Internet. Network  102  may represent a collection of networks and gateways that use the Transmission Control Protocol/Internet Protocol (TCP/IP) and other protocols to communicate with one another. At the heart of the Internet is a backbone of data communication links between major nodes or host computers, including thousands of commercial, governmental, educational, and other computer systems that route data and messages. Of course, data processing environment  100  also may be implemented as a number of different types of networks, such as for example, an intranet, a local area network (LAN), or a wide area network (WAN).  FIG. 1  is intended as an example, and not as an architectural limitation for the different illustrative embodiments. 
         [0051]    Among other uses, data processing environment  100  may be used for implementing a client-server environment in which the illustrative embodiments may be implemented. A client-server environment enables software applications and data to be distributed across a network such that an application functions by using the interactivity between a client data processing system and a server data processing system. Data processing environment  100  may also employ a service oriented architecture where interoperable software components distributed across a network may be packaged together as coherent business applications. 
         [0052]    With reference to  FIG. 2 , this figure depicts a block diagram of a data processing system in which illustrative embodiments may be implemented. Data processing system  200  is an example of a computer, such as servers  104  and  106 , or clients  110 ,  112 , and  114  in  FIG. 1 , or another type of device in which computer usable program code or instructions implementing the processes may be located for the illustrative embodiments. 
         [0053]    Data processing system  200  is also representative of a data processing system or a configuration therein, such as data processing system  132  in  FIG. 1  in which computer usable program code or instructions implementing the processes of the illustrative embodiments may be located. Data processing system  200  is described as a computer only as an example, without being limited thereto. Implementations in the form of other devices, such as device  132  in  FIG. 1 , may modify data processing system  200 , such as by adding a touch interface, and even eliminate certain depicted components from data processing system  200  without departing from the general description of the operations and functions of data processing system  200  described herein. 
         [0054]    In the depicted example, data processing system  200  employs a hub architecture including North Bridge and memory controller hub (NB/MCH)  202  and South Bridge and input/output (I/O) controller hub (SB/ICH)  204 . Processing unit  206 , main memory  208 , and graphics processor  210  are coupled to North Bridge and memory controller hub (NB/MCH)  202 . Processing unit  206  may contain one or more processors and may be implemented using one or more heterogeneous processor systems. Processing unit  206  may be a multi-core processor. Graphics processor  210  may be coupled to NB/MCH  202  through an accelerated graphics port (AGP) in certain implementations. 
         [0055]    In the depicted example, local area network (LAN) adapter  212  is coupled to South Bridge and I/O controller hub (SB/ICH)  204 . Audio adapter  216 , keyboard and mouse adapter  220 , modem  222 , read only memory (ROM)  224 , universal serial bus (USB) and other ports  232 , and PCI/PCIe devices  234  are coupled to South Bridge and I/O controller hub  204  through bus  238 . Hard disk drive (HDD) or solid-state drive (SSD)  226  and CD-ROM  230  are coupled to South Bridge and I/O controller hub  204  through bus  240 . PCI/PCIe devices  234  may include, for example, Ethernet adapters, add-in cards, and PC cards for notebook computers. PCI uses a card bus controller, while PCIe does not. ROM  224  may be, for example, a flash binary input/output system (BIOS). Hard disk drive  226  and CD-ROM  230  may use, for example, an integrated drive electronics (IDE), serial advanced technology attachment (SATA) interface, or variants such as external-SATA (eSATA) and micro-SATA (mSATA). A super I/O (SIO) device  236  may be coupled to South Bridge and I/O controller hub (SB/ICH)  204  through bus  238 . 
         [0056]    Memories, such as main memory  208 , ROM  224 , or flash memory (not shown), are some examples of computer usable storage devices. Hard disk drive or solid state drive  226 , CD-ROM  230 , and other similarly usable devices are some examples of computer usable storage devices including a computer usable storage medium. 
         [0057]    An operating system runs on processing unit  206 . The operating system coordinates and provides control of various components within data processing system  200  in  FIG. 2 . The operating system may be a commercially available operating system such as AIX® (AIX is a trademark of International Business Machines Corporation in the United States and other countries), Microsoft® Windows® (Microsoft and Windows are trademarks of Microsoft Corporation in the United States and other countries), Linux® (Linux is a trademark of Linus Torvalds in the United States and other countries), iOS™ (iOS is a trademark of Cisco Systems, Inc. licensed to Apple Inc. in the United States and in other countries), or Android™ (Android is a trademark of Google Inc., in the United States and in other countries). An object oriented programming system, such as the Java™ programming system, may run in conjunction with the operating system and provide calls to the operating system from Java™ programs or applications executing on data processing system  200  (Java and all Java-based trademarks and logos are trademarks or registered trademarks of Oracle Corporation and/or its affiliates). 
         [0058]    Instructions for the operating system, the object-oriented programming system, and applications or programs, such as application  105  in  FIG. 1 , are located on storage devices, such as hard disk drive  226 , and may be loaded into at least one of one or more memories, such as main memory  208 , for execution by processing unit  206 . The processes of the illustrative embodiments may be performed by processing unit  206  using computer implemented instructions, which may be located in a memory, such as, for example, main memory  208 , read only memory  224 , or in one or more peripheral devices. 
         [0059]    The hardware in  FIGS. 1-2  may vary depending on the implementation. Other internal hardware or peripheral devices, such as flash memory, equivalent non-volatile memory, or optical disk drives and the like, may be used in addition to or in place of the hardware depicted in  FIGS. 1-2 . In addition, the processes of the illustrative embodiments may be applied to a multiprocessor data processing system. 
         [0060]    In some illustrative examples, data processing system  200  may be a personal digital assistant (PDA), which is generally configured with flash memory to provide non-volatile memory for storing operating system files and/or user-generated data. A bus system may comprise one or more buses, such as a system bus, an I/O bus, and a PCI bus. Of course, the bus system may be implemented using any type of communications fabric or architecture that provides for a transfer of data between different components or devices attached to the fabric or architecture. 
         [0061]    A communications unit may include one or more devices used to transmit and receive data, such as a modem or a network adapter. A memory may be, for example, main memory  208  or a cache, such as the cache found in North Bridge and memory controller hub  202 . A processing unit may include one or more processors or CPUs. 
         [0062]    The depicted examples in  FIGS. 1-2  and above-described examples are not meant to imply architectural limitations. For example, data processing system  200  also may be a tablet computer, laptop computer, or telephone device in addition to taking the form of a mobile or wearable device. 
         [0063]    With reference to  FIG. 3 , this figure depicts a block diagram of an example configuration for sentiment analysis and inventory based event planning in accordance with an illustrative embodiment. 
         [0064]    Event management tool  302  is an example of event management tool  103 , application  304  is an example of application  105 , NLP engine  306  is an example of NLP engine  107 , profiles  308  are examples of profiles  109 A, and user interface  310  is an example of user interface  134 , in  FIG. 1 . 
         [0065]    Social media sources  312  and  314  are any number of social media sources in the manner of social media sources  111  or  113  in  FIG. 1 . Any number of types of information source  316  can operate with application  304  in the manner of information source  115  in  FIG. 1 . Sources  314 ,  316 , and  318  exist in source list  109 B in  FIG. 1  and are therefore accessible to application  304 . 
         [0066]    Inventory information  318  is information about available quantities of things needed for the event planned using event management tool  302 . Inventory information  318  is compiled in a manner described herein and other similarly purposed interactions with home-automation. 
         [0067]    Event management tool  302  sends invitee information  320  to application  304 . Invitee information  320  includes a list of invitees for an event being planned on event management tool  302 . 
         [0068]    Application  304  determines whether an invitee in invitee information  320  has permitted access to their preference information from one or more sources  312 ,  314 , and  318 , according to one or more profiles  308 . When an invitee in invitee information  320  has not permitted access to their preference information, or in addition to a permitted access in a profile  308 , application  304  accesses one or more sources  312 ,  314 , and  318 , to determine if information about the invitee is publicly available from those sources and usable to ascertain an event aspect preference of the invitee. 
         [0069]    Application  304  collects information usable to ascertain a preference of an invitee about an event aspect, such as food, drinks, or music. Application  304  submits the collected information to NLP engine  306 . NLP engine  306  performs sentiment analysis on the supplied information, and returns the results of the sentiment analysis to application  304 . 
         [0070]    In one embodiment, the NLP engine returns the results with weights associated therewith. A weight associated with a result is indicative of a confidence of the NLP engine in the particular result based on the information from which the result was derived. 
         [0071]    Application  304  analyzes the preferences contained in the results that are returned from NLP engine  306 . According to the analysis of the preferences, application  304  identifies groups of invitees with common preferences. Using the grouping of invitees and any weights associated with the preference results corresponding to the group members, application  304  computes a confidence rating for the common preference. 
         [0072]    In one embodiment, application  304  creates a group of invitees only when a number of members of the group exceeds a threshold number of invitees. In another embodiment, application  304  creates a group of invitees only when an average weight of the common preference of the members exceeds a threshold weight. In another embodiment, application  304  creates a group of invitees only when a number of members of the group exceeds a threshold number of invitees, and an average weight of the common preference of the members exceeds a threshold weight. 
         [0073]    These examples of manner of forming groups by evaluating the number of members and statistical analysis of weights are not intended to be limiting. From this disclosure, those of ordinary skill in the art will be able to conceive many other manners of grouping invitees and the same are contemplated within the scope of the illustrative embodiments. 
         [0074]    Event management tool  302  presents the event information and invitee information  320  on user interface  310 . Application  304  presents the grouping of invitees, confidence ratings of preferences, or both on user interface  310 . The host of the event can then select on the user interface those preferences which the host wants to accommodate for the event. In one embodiment, application  304  automatically selects the preferences whose confidence rating exceeds a threshold as the preferences that are to be accommodated for the event. 
         [0075]    Based on the selected preferences and the group sizes associated with the selected preferences, application  304  uses inventory information  318  to determine a set of supplies needed for the event, a subset of those supplies that exist in the inventory according to inventory information  318 , and a subset of those supplies that have to be procured for the event. Application  304  outputs all or part of the subset of those supplies that have to be procured as one or more lists  322 . For example, a list in lists  322  can be a shopping list from one store or one route, and another list in lists  322  can be a shopping list from another store, another route, or for a different time. 
         [0076]    A selected preference may pertain to an event aspect that can be satisfied via data. For example, a music style preference can be satisfied via a playlist of streaming or downloadable music from a social media source or another source, such as a music repository. In such cases, application  304  constructs and sends to an appropriate source instructions  324 . Instructions  324  are usable to construct, for example, the playlist at the source, download music from the source, schedule a playback from the source, and the like. 
         [0077]    With reference to  FIG. 4 , this figure depicts a block diagram of an application for sentiment analysis and inventory based event planning in accordance with an illustrative embodiment. Application  402  is an example of application  304  in  FIG. 3 . 
         [0078]    Component  404  collects the invitees information and other implementation-dependent information from an event management tool, such as event management tool  302  in  FIG. 3 . Component  404  identifies any profiles that might be available for one or more invitees on the invitees list. 
         [0079]    Component  406  selects the sources, such as social media sources, other information sources, or a combination thereof, that are permitted by an invitee according to a profile. Component  406  connects with the selected sources and collects permitted and/or public information about the invitee(s). 
         [0080]    Component  408  communicates with an NLP engine, such as NLP engine  306  in  FIG. 3 . Component  408  provides the information collected by component  406  to the NLP engine. Component  408  receives from the NLP engine the results of sentiment analysis based on the provided information. Component  408  groups the invitees according to common preferences, computes and assigns confidence ratings to the common preferences, or a combination thereof. 
         [0081]    When, for an invitee, the results of sentiment analysis indicate a preference, or a preference with greater than a threshold weight, as the case may be, component  410  updates a profile of the invitee. 
         [0082]    Specifically according to one embodiment, component  410  adds or updates a known preference information in the invitee&#39;s profile. By saving such information in the invitee profiles, component  410  can reduce the computational workload and network traffic while planning another event with the same invitee. 
         [0083]    Component  412  generates one or more lists  322  in  FIG. 3 . In one embodiment, component  412  receives or determines the confidence-rated preferences selected for accommodation, obtains inventory information  318 , and produces a list in lists  322 . 
         [0084]    Component  414  generates instructions  324  in  FIG. 3 . In one embodiment, component  414  determines that a preference that has been selected for accommodation can be satisfied with data from a source. Accordingly, component  414  generates the instructions to operate or configure the source to obtain the data that satisfies the selected preference. 
         [0085]    The example configuration in  FIG. 4  is not intended to be limiting. From this disclosure, those of ordinary skill in the art will be able to conceive many other configurations for a similar purpose and the same are contemplated within the scope of the illustrative embodiments. 
         [0086]    With reference to  FIG. 5 , this figure depicts a flowchart of an example process for sentiment analysis and inventory based event planning in accordance with an illustrative embodiment. Process  500  can be implemented in application  402  in  FIG. 4 . 
         [0087]    The application receives event information, e.g., a list of invitees for an event (block  502 ). The application selects an invitee (block  504 ). 
         [0088]    For the selected invitee, the application determines whether a profile exists in a repository (block  506 ). The operation of the profile and the contents thereof are described elsewhere in this disclosure. 
         [0089]    If a profile does not exists for the selected invitee (“No” path of block  506 ), the application searches known sources from a source list for publicly available information about the invitee (block  508 ). The application determines if any such publicly available data has been found as a result of the search of block  508  (block  510 ). 
         [0090]    If no data is found (“No” path of block  510 ), the application proceeds to block  520 . If data is found (“Yes” path of block  510 ), the application proceeds to block  516 . 
         [0091]    If a profile does exists for the selected invitee (“Yes” path of block  506 ), the application selects a permitted source from the profile (block  512 ). The application receives invitee&#39;s data from the selected permitted source (block  514 ). The application repeats blocks  512  and  514  for as many sources as may be permitted in one or more profiles associated with the invitee. Optionally, the application also searches known sources from a source list for publicly available information about the invitee (block  515 ). 
         [0092]    The application analyzes the data collected as a result of the searches in block  508 ,  514 ,  515 , or some combination thereof (block  516 ). Specifically, the application uses an NLP engine to perform sentiment analysis on the collected data to determine the invitee&#39;s preferences. In one embodiment (not shown), the sentiment analysis is deferred until all available data about all invitees has been collected in this manner. 
         [0093]    The application receives the results of the sentiment analysis of block  516  and stores or updates a profile of the invitee (block  518 ). The application determines whether more invitees remain to be processed in this manner (block  520 ). 
         [0094]    If more invitees remain to be processed in this manner (“Yes” path of block  520 ), the application returns to block  504  to select another invitee from the invitee list. If no more invitees remain to be processed in this manner (“No” path of block  520 ), the application analyzes and confidence-rates the invitees&#39; preferences (block  522 ). 
         [0095]    The application selects the preferences for the event (block  524 ). For example, in one embodiment, the application receives a user input from the host user, where the input selects some or all of the confidence-rated preferences of block  522 . In another example embodiment, the application automatically selects some or all of the confidence-rated preferences of block  522 . 
         [0096]    Depending upon the selected preferences, the application executes block  526 , block  528 , or both. For example, based on inventory information available to the application, the application computes a list of items, such as a shopping list, that are needed to satisfy a selected preference for the event (block  526 ). The application may repeat block  526  for as many lists as may have to be created given the preference selection. 
         [0097]    Based on the data needs of a selected preference, the application generates instructions, such as instructions to a music source, that are sufficient to obtain the data needed to satisfy the selected preference for the event (block  528 ). The application may repeat block  528  for as many instructions to as many sources as may be needed given the preference selection. The application ends process  500  thereafter. 
         [0098]    Thus, a computer implemented method, system or apparatus, and computer program product are provided in the illustrative embodiments for sentiment analysis and inventory based event planning. Where an embodiment or a portion thereof is described with respect to a type of device, the computer implemented method, system or apparatus, the computer program product, or a portion thereof, are adapted or configured for use with a suitable and comparable manifestation of that type of device. 
         [0099]    While the embodiments are described for an event planning flow starting from an invitees list and ending at the generation of a shopping list or instructions, such implementation is not intended to be limiting on the illustrative embodiments. For example, an embodiment can be configured to operate in reverse, to wit, starting from a list of items and/or data available to the host, and ending in the selection of a set of host&#39;s social media friends who can be invited given the available items or data. This and other such adaptations are contemplated within the scope of the illustrative embodiments. 
         [0100]    The present invention may be a system, a method, and/or a computer program product. The computer program product may include a computer readable storage medium (or media) having computer readable program instructions thereon for causing a processor to carry out aspects of the present invention. 
         [0101]    The computer readable storage medium can be a tangible device that can retain and store instructions for use by an instruction execution device. The computer readable storage medium may be, for example, but is not limited to, an electronic storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. A non-exhaustive list of more specific examples of the computer readable storage medium includes the following: a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), a static random access memory (SRAM), a portable compact disc read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanically encoded device such as punch-cards or raised structures in a groove having instructions recorded thereon, and any suitable combination of the foregoing. A computer readable storage medium, as used herein, is not to be construed as being transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission media (e.g., light pulses passing through a fiber-optic cable), or electrical signals transmitted through a wire. 
         [0102]    Computer readable program instructions described herein can be downloaded to respective computing/processing devices from a computer readable storage medium or to an external computer or external storage device via a network, for example, the Internet, a local area network, a wide area network and/or a wireless network. The network may comprise copper transmission cables, optical transmission fibers, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. A network adapter card or network interface in each computing/processing device receives computer readable program instructions from the network and forwards the computer readable program instructions for storage in a computer readable storage medium within the respective computing/processing device. 
         [0103]    Computer readable program instructions for carrying out operations of the present invention may be assembler instructions, instruction-set-architecture (ISA) instructions, machine instructions, machine dependent instructions, microcode, firmware instructions, state-setting data, or either source code or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C++ or the like, and conventional procedural programming languages, such as the “C” programming language or similar programming languages. The computer readable program instructions may execute entirely on the user&#39;s computer, partly on the user&#39;s computer, as a stand-alone software package, partly on the user&#39;s computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user&#39;s computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet Service Provider). In some embodiments, electronic circuitry including, for example, programmable logic circuitry, field-programmable gate arrays (FPGA), or programmable logic arrays (PLA) may execute the computer readable program instructions by utilizing state information of the computer readable program instructions to personalize the electronic circuitry, in order to perform aspects of the present invention. 
         [0104]    Aspects of the present invention are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer readable program instructions. 
         [0105]    These computer readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer readable program instructions may also be stored in a computer readable storage medium that can direct a computer, a programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer readable storage medium having instructions stored therein comprises an article of manufacture including instructions which implement aspects of the function/act specified in the flowchart and/or block diagram block or blocks. 
         [0106]    The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other device to produce a computer implemented process, such that the instructions which execute on the computer, other programmable apparatus, or other device implement the functions/acts specified in the flowchart and/or block diagram block or blocks. 
         [0107]    The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts or carry out combinations of special purpose hardware and computer instructions.