Abstract:
A website mining tool is disclosed that extracts information from, for example, a company&#39;s website and presents the extracted information in a graphical user interface (GUI). In one embodiment, web pages from a website are stored in, for example, computer memory and a structure of the web pages is identified. A plurality of blocks of information is then extracted as a function of this structure and a category is assigned to each block of information. The elements in the blocks of information are then displayed, for example to a salesperson, as a function of these categories. In another embodiment, Document Object Modeling parsing is used to identify the structure of the web pages. In yet another embodiment, a support vector machine is used to categorize each block of information.

Description:
BACKGROUND OF THE INVENTION 
     This application relates generally to websites and, more particularly, to mining websites for information. 
     In many types of sales environments, it is desirable for a salesperson to understand various aspects of a customer or potential customer prior to a sales call or visit. Websites associated with the customer as well as those of any competitors of the customer frequently provide a convenient method of obtaining such information. Corporate websites typically require significant time and effort to design and are often designed based on a thorough analysis of the market of the company and the competitive landscape. Typically, such sites, among other things, describe general information about the company, the products and services the company provides, contact information, as well as a large variety of e-commerce or customer care applications. All of this information is relevant to a salesperson&#39;s understanding of a corporation. However, when these websites are large, or the salesperson is limited by time, reading through a company&#39;s website to obtain this information is often not practical. 
     Software tools useful for extracting information from websites are known. Some such tools typically either download all or desired portions of websites for off-line viewing. Other tools, known as crawlers, visit websites and scan the website pages content and other information in order to create entries for an index. Entire sites or specific pages can be indexed and selectively visited. Thus, a map of a website can be created or information on that website can be searched by referring to the index. 
     SUMMARY OF THE INVENTION 
     The present inventors have recognized that, while prior tools for extracting information from websites were advantageous in many aspects, they were also limited in certain regards. Specifically, while such tools were capable of downloading or indexing entire web pages, these tools were not able to extract information relevant to the sales function in the most efficient manner. These tools also were unable to provide information in a manner that would permit a salesperson to quickly gain an overall understanding of the products, services and other relevant information of the potential customer. 
     The present invention substantially solves these problems. In accordance with the present invention, a website mining tool extracts information from, for example, a company&#39;s website and presents the extracted information in a graphical user interface (GUI). In one embodiment, web pages from a website are loaded in, for example, computer memory and a structure of the web pages is identified. A plurality of blocks of information is then extracted as a function of this structure and a category is assigned to each block of information. The elements in the blocks of information are then displayed, for example to a salesperson, as a function of these categories. In another embodiment, Document Object Modeling parsing is used to identify the structure of the web pages. In yet another embodiment, a support vector machine is used to categorize each block of information. 
     These and other advantages of the invention will be apparent to those of ordinary skill in the art by reference to the following detailed description and the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows one illustrative method in accordance with the principles of the present invention; 
         FIG. 2  shows a second illustrative method in accordance with the principles of the present invention; 
         FIG. 3  shows the high level categories of information extracted from a website according to the method of  FIGS. 1 and 2 ; 
         FIG. 4  shows an expanded view of a first category of the information extracted from a website; 
         FIG. 5  shows an expanded view of a second category of the information extracted from a website; 
         FIG. 6  shows an expanded view of a third category of the information extracted from a website; 
         FIG. 7  shows an expanded view of a fourth category of the information extracted from a website; and 
         FIG. 8  shows a schematic diagram of a computer useful for analyzing websites in accordance with the principles of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  shows a method in accordance with the principles of the present invention whereby information is extracted from a corporate website and is organized for display to a salesperson. At step  101  a web crawler is initiated by entering, for example, the address of a website to be analyzed. A web crawler is an automated program that accesses a website, traverses the site by following the links present on the pages of the site, and downloads the web pages to local disks. The content of these pages are then, for example, loaded into computer memory. Next, at step  102 , the Web pages then are parsed in order to obtain information regarding the structure of the page. Illustratively, Document Object Model (DOM) parsing may be used to obtain this structure information. DOM is a cross-language application programming interface standardized by the World Wide Web Consortium (W3C) for accessing and modifying extensible markup language (XML) documents. DOM parsing involves parsing multiple pages of a website that are, for example, stored in computer memory, and converting them into a hierarchical tree. Such DOM parsing is well-known in the art and will not be described further herein. The result of such parsing is that the structural hierarchy of a website is determined. 
     Once the hierarchical structure of a webpage is known, then at step  103  the categories of information on the web pages are determined to facilitate understanding of the content of the website. As discussed previously, typical corporate websites present information on multiple web pages. Information conveyed on websites can be identified not only by the structure of the links between pages, but also by the semantic structure of these pages. Therefore, in order to identify these links, in accordance with one embodiment of the present invention, desired categories of information are identified into which the information blocks on a web page are categorized. An information block is defined as a coherent topic area according to its content. Illustratively, the different semantic categories for classifying web page information blocks may include page titles, forms, table data, frequently asked questions/answers, contact numbers, bulleted lists, headings, heading lists, heading content, and other such categories. 
     Once such categories of information are identified, at step  104  information blocks are assigned to those categories. Such category assignment may be considered a binary classification problem. Specifically, for each pair of information blocks, a set of features is developed to represent the difference between them, and then the feature set is classified into the information block boundary class or the non-boundary class. The two information blocks in the pair are separated into two distinct information blocks if a boundary is identified between them. In order to identify the boundaries between such classifications, a learning machine such as a Support Vector Machine (SVM) is illustratively used. An SVM is an algorithm that is capable of determining boundaries in a historical data pattern with a high degree of accuracy. As is known in the art, SVMs are learning algorithms that address the general problem of learning to discriminate between classes or between sub-class members of a given class. SVMs have been found to be much more accurate than prior methods of classifying information blocks due to the SVM&#39;s ability to select an optimal separating boundary between classifications when many candidate boundaries exist. SVMs are well known and the theory behind the development and use of such SVMs will not be discussed further herein. One skilled in the art will recognize that many different categorization methods may be used to identify the boundaries between classifications, as described above with equally advantageous results. The end result, however, is that distinct information blocks on a website are accurately categorized. Referring once again to  FIG. 1 , once the information blocks have been identified, at step  105  specific elements of information are extracted from those blocks. 
       FIG. 2  shows a method whereby such elements of information are extracted from information blocks. Specifically,  FIG. 2  shows how, illustratively, elements of information related to the identified category “Products and Services” are extracted. Specifically, at step  201 , product/service text seeds are identified. A seed is, for example, a word or phrase that identifies one class of product/service. Illustratively, the word “Plan” may be identified as a potential seed. As one skilled in the art will recognize, for different information different seeds would be identified. Next, at step  202 , after the product/service seeds have been identified, noun phrases ending with the seeds are identified. In this example, the phrase International Plan may be identified. Then, at step  203 , patterns associated with the noun phrases and seeds are identified in order to locate new products and services. For example, the phrase “Sign Up for Our International Plan” may be identified as associated with the phrase International Plan. Then, at step  204 , new products and services are identified by searching for that phrase. Illustratively, the phrases “Sign up for Our Domestic Plan” and “Sign up for Our Caller Determination Service” are identified, thus identifying two new products/services Domestic Plan and Caller Determination Service (CDS). Once new products and services are identified at step  204 , new seeds may be identified at step  201 . For example, in the newly-identified illustrative service Caller Determination Service, the new seed “Service” may be identified. 
     Next, in addition to determining new seeds from identified products and services, at step  205  parallel analysis is used to identify even more products and services. Illustratively, by referring to the phrase Determination Service, a new service named Billing Determination Service is identified. Each time a new product or service is identified, new potential seeds and phrases are identified and other elements of information having those seeds and phrases are identified. This information extraction technique is then applied to each category of information in order to identify and relate elements of information in those categories. 
       FIG. 3  shows one illustrative example of how the information extracted from an illustrative website analysis in accordance with the principles of the present invention may be displayed and/or otherwise arranged. Specifically, in a summary display of the results of such an analysis, five headings are shown: Task Complexity  301 , Contact Us  302 , Acronyms  303 , Products  304  and FAQ Pages  305 . Task Complexity is, for example, a hyperlink category that is linked to information related to the process of analyzing the website in question. Illustratively,  FIG. 4  shows one expanded view of the category Task Complexity obtained by clicking on the Task Complexity hyperlink  301 . Referring to  FIG. 4 , information related to the task of analyzing a website is displayed in  FIG. 401 , here the number of web pages examined, the number of information blocks identified, the terms within those information blocks that were, for example, seeds or identified phrases obtained as described above, the number of hyperlinks followed in the analysis and the number of sentences examined for relevant terms. 
       FIGS. 5-7  show how the information collected via the method of  FIGS. 1 and 2  may be displayed in a way that enables, for example, a salesperson to quickly obtain a detailed overview of relevant information on a company&#39;s website. Specifically, referring to  FIG. 5 , by clicking on the “Contact Us”  302  link, phone numbers on the site, such as the phone number 18001234567, and e-mail addresses, such as info@company.com are shown in field  502 . If available, the type of phone number or relevant context information is shown. This information may be displayed, for example, by clicking on the respective phone number. Here, illustratively, the number 18001234567 is clicked to reveal the phrase Customer Service  501 , indicating that that phone number is a customer service number. If any further information related to customer service is identified, such as websites, phone numbers or addresses, then that information may be shown by clicking on the phrase Customer Service. 
       FIG. 6  shows another embodiment whereby acronyms identified as a class of information according to the method of  FIG. 1  and  FIG. 2  are shown in field  601  when the respective Acronyms link  303  is clicked. Finally,  FIG. 7  shows how the products listed on a company&#39;s website can be displayed conveniently. Specifically, as was the case with contact information, when the Products link  304  is clicked, an expanded list  701  of product categories is shown in field  701 . Then, by clicking on an individual category, such as phone  702 , or an item in that category, such as 5.8 GHz Phones, an expanded list of products can be displayed in fields  703  and  704 , respectively. One skilled in the art will recognize that any number of categories may be shown in this way by identifying relevant information as described herein above. 
       FIG. 8  shows a block diagram of a computer that can be used in analyzing websites as well as extracting and displaying information from those websites as described herein above. Referring to  FIG. 8 , computer  807  may be implemented on any suitable computer adapted to receive, store, and transmit data such as the aforementioned website information described above. Illustrative computer  807  may have, for example, a processor  802  (or multiple processors) which controls the overall operation of the computer  807 . Such operation is defined by computer program instructions stored in a memory  803  and executed by processor  802 . The memory  803  may be any type of computer readable medium, including without limitation electronic, magnetic, or optical media. Further, while one memory unit  803  is shown in  FIG. 8 , it is to be understood that memory unit  803  could comprise multiple memory units, with such memory units comprising any type of memory. Computer  807  also comprises illustrative network interface  804  that is used to interface with, for example, the Internet  809  in order to access websites for analysis. Computer  807  also illustratively comprises a storage medium, such as a computer hard disk drive  805  for storing, for example, data and computer programs adapted for use in accordance with the principles of the present invention as described hereinabove. Finally, computer  807  also illustratively comprises one or more input/output devices, represented in  FIG. 8  as terminal  806 , for allowing interaction with, for example, a salesperson wishing to analyze websites and view categorized information. One skilled in the art will recognize that computer  807  is merely illustrative in nature and that various hardware and software components may be adapted for equally advantageous use in a computer in accordance with the principles of the present invention. A computer such as the computer shown in  FIG. 8  may be used to perform the steps of the methods described here, for example in association with the method of  FIGS. 1 and 2 , via appropriate software stored in memory and executed on a processor adapted to perform the steps of computer programming instructions stored in that software. 
     The foregoing Detailed Description is to be understood as being in every respect illustrative and exemplary, but not restrictive, and the scope of the invention disclosed herein is not to be determined from the Detailed Description, but rather from the claims as interpreted according to the full breadth permitted by the patent laws. It is to be understood that the embodiments shown and described herein are only illustrative of the principles of the present invention and that various modifications may be implemented by those skilled in the art without departing from the scope and spirit of the invention. Those skilled in the art could implement various other feature combinations without departing from the scope and spirit of the invention. For example, while the methods for data extraction and display described hereinabove are useful for a salesperson, they may also be useful by a company in designing a structured web search functionality for that company&#39;s website. Used in this manner, a company&#39;s customer, for example, could search a website and extract relevant information in a structured, cascaded fashion as described herein. One skilled in the art will be able to devise numerous different uses for the extraction and display methods in accordance with the principles of the present invention.