Abstract:
An artificially intelligent system comprising a plurality of autonomous virtual machines, anonymously matching advertisements over a publicly accessible electronic network. The system automates matching of free form electronic documents for supply and demand of goods or services. Each machine employs an expert system with a geographical bias, an inherent learning capability, and tendency to improve accuracy over time. Advertisements and knowledge bases are replicated to identically configured networked machines. Each machine elicits a qualified, interactive response to an advertisement, employing electronic commerce in the purchase of contact information for a supplier, by a demander.

Description:
REFERENCES CITED 
   Reference to Related Applications 
   The present application claims the priority of the following provisional applications, incorporated herein by reference: 
   PPA No. 60/339,959 entitled “Internet based, virtual machine utilizing artificial intelligence to locate resources by geographic location”, filed Dec. 5, 2001. 
   PPA No. 60/341,147 entitled “Artificially intelligent fulfillment system”, filed Dec. 14, 2001. 
   PPA No. 60/355,743 entitled “Internal processing of artificially intelligent fulfillment system”, filed Feb. 5, 2002. 

   SEQUENCE LISTING OR PROGRAM 
   A complete list of the source code required to create the hierarchical database is contained in the CD-ROM provided, entitled “AIFS source code—May 12, 2002”. The CD_ROM is incorporated here by reference, see Appendix A for contents. 
   BACKGROUND 
   1. Field of the Invention 
   The invention generally relates to the field of intelligent document storage and retrieval. More specifically the system, through a plurality of algorithms, engages at least one expert system, to retrieve and qualify electronic records (or profiles) describing surplus (or supply), containing known, and previously unknown, words or phrases (or patterns) in free form text, of relative significance or strength, in relation to the significant patterns in free form text, in records describing demand. The relative score between a supply and demand profile obtained by factoring a plurality of supply pattern to a plurality of demand pattern, with reference to a knowledge base (or expert system), is the basis for qualification and ranking. 
   Further, the system relates to the field of interactive advertising. A plurality of algorithms determines the availability of a supply or demand, on a personal match list for the owner of a particular supply or demand, for a particular knowledge base. Such match list, deliverable in electronic form, enables the owner of a profile, to interact with ranked supply or demand profiles: access to detailed descriptive information in a plurality of electronic media formats; update a plurality of indicators visible to owner of profile; transmission of an electronic message to the owner of the profile. 
   2. Prior Art 
   Third-party services generally provide supply to meet demand on a per-item commission basis. Fees are generally paid by demander, in arrears and often subject to qualification, or engagement of that supply for a probationary period. Other services may be provided, such as background checks, and references. Pricing varies according to the need of the Demander. 
   Advertisement of a demand via newspaper or trade press also provides less than optimal performance, as it will not ensure that the supply accurately meets the demand. Suppliers tend to respond in terms of their need and not necessarily that of the demander. Fees are paid in advance by demander, irrespective of the results. Pricing is based on the physical restrictions of the publishing and distribution process, such as lineage or relative page size, often combined with an advertising credit system. 
   Other services currently available, such as online search databases, whilst easily accessible, are often taxonomical in operation, resulting in information loss as free form text is reduced to categories, keywords, or Boolean data. Taxonomical systems often depend on the experience of the designer in providing sufficient options for categorization. As a result they are difficult to operate with user performing the search having to second guess the particular taxonomy used by the originator of a profile. Prices are often based on the quantity of the return. 
   OBJECTS AND ADVANTAGES 
   The invention provides a novel alternative to the above described traditional methods of advertising: possessing the advantage of in-built intelligence with a learning capability; eliciting a qualified response; and providing dynamic control of the advertising costs associated with fulfillment. The system is programmed to record patterns in documents submitted in the context of a particular expert system, in a hierarchical database; to learn from interaction; to qualify and rank supply and demand; provide interactive feedback; and deliver services electronically. 
   In the course of submitting a profile an electronic document may be submitted in a coded format. The system performs reduction of the document to a common format, as a pre-requisite of the expert system to be used. Such documents are assigned a plurality of previously identified words, phrases or patterns by the expert system, from existing hierarchical relationships in the knowledge base. The expert operators define and record the relationships between newly encountered patterns and patterns in the expert system in use; and may modify existing relationships to accommodate; providing a learning capability tending to increase accuracy. 
   The creator of a demand or supply profile reviews a list of matched profiles. The supplier must be pre-qualified by the expert system, in order to be placed on a list of matching supply for a particular demand profile. This assures that the list of suppliers meets the minimum requirements of demander; the system provides qualified matching. 
   Suppliers may only respond to a demand profile on their match list, to indicate an interest in fulfilling the demand; the system provides qualified response. 
   The demander, after having reviewed matched profiles, including response of the matching supplier profile owners may receive supplier contact information for a fee; fees are paid to the operator of the machine, for the results of the search for identity (or contact information) for one or more matching profiles, as required of the demander. The system introduces no bias, for or against the supplier, since they create their own profile for free, and cannot contact demanders. 
   SUMMARY 
   The invention provides intelligent matching of free form text; supply and demand documents, employing at least one expert system, incorporating a learning capability tending to increase the efficiency of the matching process over time. 

   
     DRAWINGS 
       FIG. 1 : Illustrates the group and equivalence relationships, and keys (words, phrases or patterns) that may be used to index input documents. Equivalent associations are shown vertically and group associations left to right. Once a key is recognized, the number of group levels traversed to reach another key, from the original key, determines the level of association with the other key. A group association may originate from the original key or any of the equivalence keys. For example: the key “Eyeball” has level 1 association with “Eye” and “Eyes”, level 2 association with “Vision”, “Sight” and “Body Parts”, and level 3 association with “Senses”. 
       FIG. 2 : Illustrates the publicly accessible electronic network, which connects, suppliers, demanders, and expert operators with the virtual machines. The machines labeled A, B, and C, represent three identically configured machines, sharing data comprising: documents and knowledge base. 
       FIG. 3 : Illustrates how the background processes interact with the system. Each process operates autonomously on an arbitrary periodic schedule. 
   

   DETAILED DESCRIPTION 
   1. Preferred Embodiment 
   1.1. Description 
   This embodiment employs: a plurality of database (supply and demand) with a corresponding expert system, in tandem, to provide a plurality of intelligent searches capabilities; independence from electronic document encoding; and independence from document structure or layout. 
   The system is computerized, comprising a CPU and a hierarchical database wherein is stored the document repository, supply and demand profiles, indexing, matching and transactional data, stored procedures, and a plurality of expert system data. 
   The architecture of the computer system can be described in terms of the components:
         Firewall—a device for securing an internal network from external access, except as required for operation of the invention, as configured by a person skilled in Network Administration. The purpose of the firewall is to permit communication with users on an electronic network.   Web server—a device for delivering electronic forms, static and dynamic web pages, and performing procedure calls to the application server, as configured by a person skilled in Web Administration. The purpose of the web server is to respond to requests by users over an electronic network.   Application server—a device for performing the programmatic algorithms of the application, controlling access to data, accessing the hierarchical database on the database server, as configured by an Applications Administrator. The purpose of the application server is to perform programmatic algorithms in response to: user input via the Web Server; a periodic schedule for autonomous background processes.   Database server—a device for storing and retrieving hierarchical data, as configured by a Database administrator. The database server is a repository for the supply and demand data, including any references to external data, indexing data, matching data, stored procedures, and the patterns and relationships comprising the expert system.   Mail server (or MTA)—a device for relaying electronic messages, configured by a Systems Administrator. The mail server relays electronic messages and acts as an interface to the application by responding with programmatic algorithms for some incoming addresses.
 
1.2 Operation
       

   Users submit a profile via electronic form, which consists of a number of free form text fields and a mechanism for uploading a document electronically. In return they receive a login and password via electronic message. An electronic record of the match list for their demand or supply profile is created in the hierarchical database. The electronic form comprising a representation of that match list (or match page), is dynamically updated with status information. An electronic message is sent to the user periodically via email, containing a hypertext link to the match list. The profile owner for the match list must provide a valid user name and password to view and interact with the match list. 
   A dynamic match page displays the list, with reference to the current matches recorded in the hierarchical database, including a plurality of devices for navigating and otherwise interacting with the list, user may:
         view and download profile information;   request profiles via electronic messaging;   provide feedback on interest in a match;
 
additionally, demander may:
   purchase supplier identity;   send a request for feedback to supplier.       

   A user creating a supply sees a current list of demand (matched and ranked by the system), and vice versa. Demanders may contact suppliers by purchasing their contact information, via electronic commerce, and downloading electronically. 
   A number of autonomous background processes provide necessary supporting functions, see  FIG. 3 :
         Write Email—periodically, transfer email messages from the hierarchical database to the file system for subsequent processing by the “Mail Agent” as described below; record in the hierarchical database.   Mail Agent—periodically, read email messages from file system and send to the Mail Server (as described in 1.1 above), for delivery.   Key New Demand—periodically, read newly approved demand profiles and index with reference to the expert system; record in the hierarchical database.   Key New Supply—periodically, read newly approved supply profiles and index with reference to the expert system; record in the hierarchical database.   Match New—periodically, read newly indexed demand profiles and iteratively match new supply profiles, according to the recorded indices; record in the hierarchical database.   Feedback—periodically, read request by users (demand and supply profile owners) for delivery of selected matching profile. Create an email record in the hierarchical database to be serviced by the “Write Mail” process, described above.   Notify Daily—daily, notify profile owners with new matches recorded in the hierarchical database. Create an email record in the hierarchical database to be serviced by the “Write Mail” process, described above.   Notify ASAP—periodically, notify profile owners with new matches recorded in the hierarchical database. Create an email record in the hierarchical database to be serviced by the “Write Mail” process, described above.       

   A number of supporting functions are available to a user (the creator of a demand or supply profile), via a menu system, implemented in the electronic interface of the application server, to support electronic commerce, provide account history, and auditing, profile options, settings and preferences. It is anticipated that the user functions will evolve, to accommodate ancillary functions. 
   A number of supporting functions are available to the administrator including: the approval or denial of submitted profiles; a plurality of statistical functions pertaining to financial and other activities; updates and corrections to the expert system patterns and relationships; modification of system level parameters; periodic requests for re-indexing of profiles; updates to Frequently Asked Questions database; updates to electronic mail templates. It is anticipated that the administrator functions will evolve, to accommodate further ancillary functions. 
   A menu is available to an expert operator including: listing of the expert system relationships; visual identification of new patterns in a new document where recognized patterns are highlighted; update of the expert system patterns and relationships. It is anticipated that the expert operator menu will evolve, to accommodate ancillary functions. 
   The machine replicates data to multiple hierarchical databases. Identically configured machines exchange information. Each machine electively receives and transmits documents and knowledge-base data to other machines connected electronically using replication techniques widely accepted in data processing, see  FIG. 2 . 
   1.2.1 Detailed Operation of the Invention 
   1.2.1.1 Parameters 
   a) System Parameters 
   i) Indexing level (SIL)
         This parameter determines the number of levels of group associations to traverse when indexing profiles. Words in the knowledge base, or keys, are parsed for associations recorded in the hierarchical database, which can be either equivalence (at the same level), or group (at a higher level).   Both group and equivalence key associations are traversed when indexing a profile to determine which keys to record for the profile in the hierarchical database. The level of association, is also recorded, see  FIG. 1 .   If the SIL is unity then the first set of equivalent keys are traversed. If the SIL is 2, additionally the first level group keys and their equivalence keys are recorded, and so on.       

   ii) Matching Level (SML)
         This parameter controls the operation of the matching process in determining the number of levels of group associations to include in formulating a score for a profile at the time of matching, with reference to the association level recorded for a profile key, in the hierarchical database at the time of indexing, see 1.2.1.1(a) (i).   During the matching process the matching level used for a match is the SML. The matching level and score are recorded for a match in the hierarchical database.       

   iii) System Threshold (ST)
         The system threshold determines the lower limit for matching profiles and controls the information displayed to the originator of a matched profile. This may either be the lower bound for a match score or a count of the number of the highest ranked matching profiles.
 
1.2.1.2 Profile Indexing
       

   A profile comprises of a plurality of free form text fields and at least one descriptive document, incorporating personal information from the originator and specific information for the supply or demand.
         a) Create a temporary word list for the profile from the title, and the descriptive documents, along with the frequency, and origin of the words. The origin may be: title, descriptive document, or both.   b) For each word recorded in 1.2.1.2(a), if the word does not match a key, record in the knowledge base as unclassified.   c) For each word recorded in 1.2.1.2(a), if the word matches a key in the knowledge base and the word is not an unclassified or meaningless word, record frequency and origin in the hierarchical database for the profile. Origin may be: title, descriptive document, or both.   d) Existing multi-word keys in the knowledge base are compared with the temporary word list created in 1.2.1.2(a), and the multi-word key and frequency recorded in the hierarchical database, for the profile.   e) Depending on the SIL, existing equivalence keys are compared with the temporary word list created in 1.2.1.2(a) and multi-word keys created in 1.2.1.2(d), and the equivalence key together with the original frequency are recorded in the hierarchical database for the profile, as described in 1.2.1.1(a)(i).   f) Depending on the SIL, existing group associations for the each of the keys, recorded for the profile, are traversed and the new group and associated equivalence keys together with original frequency and origin are recorded in the hierarchical database for the profile, as described in 1.2.1.1(a)(i).
 
1.2.1.3 Expert operation
       

   At least one expert operators updates the knowledge base classifying new words to create keys; indicate required keys; create new multi-word keys; and new key associations. Key associations may be created as equivalent (same level) or group (higher level), see  FIG. 1 . 
   1.2.1.4 Profile Matching 
   Compare each active supply to each active demand and formulate the component match scores, as follows: 
   a) Required Keys
         All keys for a profile, recorded in the knowledge base as required, are compared. The matching level is determined by the SML as described in 1.2.1.1(a)(ii). Only those profile keys with an index level less than or equal to the matching level are including in the matching process:
 
Component Score=number of required keys in supply/number of required keys in demand
   Where there are no required keys recorded for the demand score as unity.       

   b) Keys
         All keys for a profile are compared. The matching level is determined by the SML as described in 1.2.1.1(a)(ii). Only those profile keys with an index level less than or equal to the matching level are including in the matching process:   For each key recorded for the demand profile, score the key as:
 
Key Score=frequency in supply/frequency in demand
   Where this is greater than unity, score as unity. The component score is calculated as:
 
Component Score=sum of Key Score/number of demand keys.
       

   c) Title
         Keys that occur only in the title are compared. The matching level is determined by the SML as described in 1.2.1.1(a)(ii). Only those profile keys with an index level less than or equal to the matching level are including in the matching process:   For each key recorded for the demand profile with an origin of title, score the key as:
 
Title Key Score=frequency in supply title/frequency in demand title
   Where this is greater than unity score as unity. The component score is calculated as:
 
Component Score=sum of Title Key Score/number of demand title keys.
       

   d) Category
         Each key in the knowledge base is associated with a plurality of categories, one of which is a primary category. Compare the frequency of the primary key categories for the supply to the frequency for the demand:
 
Individual Score=frequency in supply keys/frequency in demand keys
   Where this is greater than unity score as unity. The component score is calculated as:
 
Component Score=sum of Individual Scores/number of demand key categories.
       

   e) Type
         Compare the supply type to the demand type and return an arbitrary score between zero and unity.       

   f) Location 
   Compare the Country, City, State and Zip (Postal) Code from the supply to the demand and return an arbitrary score between zero and unity. 
   g) Citizen/Resident/Travel
         Compare the Citizenship, Residency and Travel preference indicators for the supply to the demand and return an arbitrary score between zero and unity.       

   h) Relocation
         Compare the Relocation preference indicator for the supply to the demand and return an arbitrary score between zero and unity.       

   i) Pricing
         Compare the Price upper and lower limits for the supply to the demand and return an arbitrary score between zero and unity.       

   j) Experience
         Compare the Experience for the supply to the demand and return an arbitrary score between zero and unity.       

   Depending on the demand/supply type, apply an individual, arbitrary weighting to each of the component scores, to give a weighted component score. Multiply together each of the weighted components, and convert to a decimal percentage. Record the score, and matching level for the matching supply and demand profiles in the hierarchical database. 
   1.2.1.5 Match Display 
   The ST is used to determine the profiles displayed as matching, as described in 1.2.1.1(a)(iii) and 1.2.1.1(b) (ii). 
   2. Alternate Embodiment 
   2.1 Description 
   The alternate embodiment is the application of the invention to recruiting or head-hunting for Information Technology personnel, where the patterns are skills in word or phrase form. The expert system uses American English words or phrases (or patterns) and reduces source documents to decoded American English (ASCII) text, for indexing and matching. The accompanying CD-ROM contains the source code for construction of the database; seeding of data; stored procedures, functions and scripts for operation. 
   2.2 Operation 
   In this embodiment the supply is Information Technology personnel, with skills representing the patterns. The demand is Information Technology jobs. Suppliers submit their candidate profile, containing geographic location, compensation requirements and descriptive document (a resume), electronically. Demanders submit a job profile in a similar manner and upload a descriptive document (a job description), electronically. 
   New patterns are identified by expert operators and added to the expert system (skill database) together with hierarchical relationships. This relative number of hops, measure in equivalence (zero hops) or group (one hop) between the source and destination skill in the expert system, along with the user, and system preferences, determine the relative strength of the match, or score. 
   As described here and in the preferred embodiment the invention analyzes data as submitted. That is, the data is wholly contained within a hierarchical database, as data submitted via electronic medium to the invention, in the form of a supply or demand profile. However, this is not a necessary feature of the invention. All that is required is access to the source data for reading. Therefore, all functions, described herein may be performed on data that is externally accessible containing, at minimum, a free form text descriptive document. This would include external repository that may be parsed, such as a URL. 
   APPENDIX A 
   CD-ROM Contents 
   All assumptions are included as comments in the source code. The source code is written is in the PL/SQL and SQL*PLUS proprietary programming languages of Oracle Corporation, and Unix Korn shell script, and contains all necessary components to install and operate the alternate embodiment of the invention, as described below. 
   
     
       
             
           
             
             
             
             
             
           
             
             
             
           
             
           
             
             
             
             
           
             
             
             
             
           
             
             
             
           
             
           
             
             
             
             
             
           
             
             
             
           
             
           
             
             
             
             
             
           
             
           
             
             
             
             
           
             
           
             
             
             
           
             
           
             
             
             
           
             
           
             
             
             
             
             
           
             
             
             
           
             
           
             
             
             
             
             
           
             
             
           
             
           
             
             
             
             
             
           
             
             
             
           
             
           
             
             
             
             
             
           
             
           
             
             
             
             
           
             
           
             
             
             
           
             
           
             
             
             
           
         
             
                 
             
           
           
             
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               04-14-03 3:47p . . 
             
             
               CRADMIN 
               SQL 
                 
               41,763 
               12-05-02 2:28p cradmin.sql 
             
             
               CRCART 
               SQL 
                 
               10,129 
               12-05-02 2:28p crcart.sql 
             
             
               CRDAT 
               SQL 
                 
               13,101 
               12-05-02 2:28p crdat.sql 
             
             
               CRENT 
               SQL 
                 
               8,538 
               12-05-02 2:28p crent.sql 
             
             
               CRFB 
               SQL 
                 
               89,470 
               12-05-02 2:28p crfb.sql 
             
             
               CRFUNC 
               SQL 
                 
               1,483 
               12-05-02 2:28p crfunc.sql 
             
             
               CRGEN 
               SQL 
                 
               34,899 
               12-05-02 2:28p crgen.sql 
             
             
               CRJOB 
               SQL 
                 
               43,648 
               12-05-02 2:28p crjob.sql 
             
             
               CRMAINT 
               SQL 
                 
               130,639 
               12-05-02 2:28p crmaint.sql 
             
             
               CRMATCH 
               SQL 
                 
               93,355 
               12-05-02 2:28p crmatch.sql 
             
             
               CRREP 
               SQL 
                 
               24,590 
               12-05-02 2:28p crrep.sql 
             
             
               CRSDCF 
               SQL 
                 
               95,414 
               12-05-02 2:28p crsdcf.sql 
             
             
               CRSDCX 
               SQL 
                 
               37,351 
               12-05-02 2:28p crsdcx.sql 
             
             
               CRSEL 
               SQL 
                 
               6,294 
               12-05-02 2:28p crsel.sql 
             
             
               CRTAB 
               SQL 
                 
               49,280 
               12-05-02 2:28p crtab.sql 
             
           
        
         
             
                 
               15 file(s) 
               679,954 bytes 
             
           
        
         
             
               Directory of E:\static 
             
           
        
         
             
               . 
                 
               &lt;DIR&gt; 
                 
               04-14-03 3:47p 
             
             
               . . 
                 
               &lt;DIR&gt; 
                 
               04-14-03 3:47p 
             
             
               BUY_QU~6 
               HTM 
                 
               908 
               12-05-02 2:32p buy —   
             
             
                 
                 
                 
                 
               quota.html 
             
             
               CAND_M~8 
               HTM 
                 
               998 
               12-05-02 2:32p cand —   
             
             
                 
                 
                 
                 
               mlist.html 
             
             
               CC_EN~10 
               HTM 
                 
               996 
               12-05-02 2:32p cc —   
             
             
                 
                 
                 
                 
               entry.html 
             
             
               FAQ 
               HTM 
                 
               933 
               12-05-02 2:32p faq.htm 
             
             
               INDEX~14 
               HTM 
                 
               3,560 
               12-05-02 2:32p index.html 
             
             
               JOB_M~16 
               HTM 
                 
               996 
               12-05-02 2:32p job —   
             
             
                 
                 
                 
                 
               mlist.html 
             
             
               LINKS~18 
               HTM 
                 
               998 
               12-05-02 2:32p links.html 
             
             
               MAIN~20 
               HTM 
                 
               5,033 
               12-05-02 2:32p main.html 
             
             
               MYSDC~22 
               HTM 
                 
               996 
               12-05-02 2:32p mysdc.html 
             
             
               QSCAN~24 
               HTM 
                 
               1,005 
               12-05-02 2:32p qsc- 
             
             
                 
                 
                 
                 
               and.html 
             
             
               QSCHELP 
               HTM 
                 
               2,521 
               12-05-02 2:32p qschelp.htm 
             
             
               QSJHELP 
               HTM 
                 
               2,515 
               12-05-02 2:32p qsjhelp.htm 
             
             
               QSJOB~30 
               HTM 
                 
               1,005 
               12-05-02 2:32p qsjob.html 
             
             
               REFER~32 
               HTM 
                 
               997 
               12-05-02 2:32p refer.html 
             
             
               REFS2~34 
               HTM 
                 
               4,023 
               12-05-02 2:32p refs2x.html 
             
             
               SDCLEGAL 
               HTM 
                 
               9,000 
               12-05-02 2:32p sdc- 
             
             
                 
                 
                 
                 
               legal.htm 
             
             
               SDCLO~38 
               HTM 
                 
               997 
               12-05-02 2:32p sdc- 
             
             
                 
                 
                 
                 
               login.html 
             
             
               SDCLO~40 
               HTM 
                 
               2,282 
               12-05-02 2:32p sdc- 
             
             
                 
                 
                 
                 
               logo.html 
             
             
               SDCPJ~42 
               HTM 
                 
               16,996 
               12-05-02 2:32p sdcpj1.html 
             
             
               SDCPJ~44 
               HTM 
                 
               984 
               12-05-02 2:32p sdcpjx.html 
             
             
               SDCRE~46 
               HTM 
                 
               14,084 
               12-05-02 2:32p sdc- 
             
             
                 
                 
                 
                 
               req1.html 
             
             
               SDCRE~48 
               HTM 
                 
               985 
               12-05-02 2:32p sdc- 
             
             
                 
                 
                 
                 
               reqx.html 
             
             
               TIPS_~50 
               HTM 
                 
               6,001 
               12-05-02 2:32p 
             
           
        
         
             
               tips_for_candidates.htm 
             
           
        
         
             
               TIPS_~52 
               HTM 
               6,623 
               12-05-02 2:33p 
             
           
        
         
             
               tips_for_employers.htm 
             
           
        
         
             
                 
               24 file(s) 
                85,436 bytes 
             
           
        
         
             
               Total files listed: 
             
           
        
         
             
                 
               41 file(s) 
               767,626 bytes 
             
             
                 
                9 dir(s) 
                   0 bytes free