UTK IS 530 - Information Retrieval Transfer Cycle

Unformatted text preview:

Information Retrieval Transfer CycleInformation Retrieval SystemInterlinked EntitiesIR Information TransferThe IR CycleSlide 6Slide 7Slide 8Slide 9Slide 10Slide 11User JudgmentDocument-Based IRsSlide 14Slide 15Information SeekingDiscussionSearch Logic OverviewInformation Retrieval Transfer CycleDania BilalIS 530Fall 2007Information Retrieval SystemA set of components that interact to provide feedbackComprised of interlinked entitiesAgency that creates the databasesPeopleDocumentsInterlinked EntitiesAgencyDocumentsPeopleIR Information TransferInputsProcessesObjectives of the SystemOutputsThe IR CycleDocuments are analyzed, translated, indexed, and stored.Documents are organizedCataloging (description/representation of docs.)Subject indexingThe IR CycleSubject indexinga) Determination of subject content (conceptual analysis)b) Translation of content into language of the system (controlled vocabulary)c) AbstractingThe IR CycleLanguage of the system (controlled vocabulary)List of subject headings (Pre-coordinate)Thesauri (Pre-coordinate)Classification schemeThe IR CycleDocuments are represented by other entitiesAuthor(s)Date of publicationLanguageIdentifiersEntities may become access pointsThe IR CycleDocuments are stored after indexingDocument representation is entered into the matching mechanismA file of document surrogates is establishedFile becomes available for searching using a variety of entities/access pointsThe IR CycleUser QueryAnalyzed for conceptual contentTranslated into the language of the system (matched against controlled vocabulary and keywords)Matched against document surrogates in the databaseThe IR CycleOutputA set of records found and deemed relevant to a user queryUser judgment of retrievalUser JudgmentRelevance to information needRelevance ranking by IR systemRelevance vs. pertinenceDocument-Based IRsInput, output, and matching mechanismsSelection of documents (done by indexers)Analysis of documents (done by indexers)Document organization and representation (done by indexers)Document-Based IRsAnalysis of user query (done by system)Match of user query with relevant documentsDelivery of documents (output)The IR CycleInformation SeekingProcess of finding information to fill a knowledge gapUser requestsKnown item searchesUnknown item searches  Subject searchesDiscussion How does the IR transfer cycle in databases varies from the cycle in Web search engines?Search Logic OverviewBoolean logicSearch parametersPhraseProximityUse of specific fields to


View Full Document
Download Information Retrieval Transfer Cycle
Our administrator received your request to download this document. We will send you the file to your email shortly.
Loading Unlocking...
Login

Join to view Information Retrieval Transfer Cycle and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Information Retrieval Transfer Cycle 2 2 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?