relevance feedback and inference networksnew

《relevance feedback and inference networksnew》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、RelevanceFeedbackandInferenceNetworksDavidHainesandW.BruceCroftDepartmentofComputerScienceUniversityofMassachusettsAmherstMA01003internet:fhaines,croftg@cs.umass.eduAbstractTheinferencenetmodelrecentlydescribedbyTurtleandCroft[19,20]hasbeenshowntobeaneectiveandRelevancefeedback,whichmo

2、diesqueriesus-generalbasisforaninformationretrievalsystem.Oneofingjudgementsoftherelevanceofafew,thepurposesofthispaperistoshowhowfeedbacktech-highly-rankeddocuments,hashistoricallybeenniquescanbeusedwiththismodel.Thisincludesbothanimportantmethodforincreasingtheper-simpletechniques,asd

3、escribedbySaltonandBuckleyformanceofinformationretrievalsystems.In[15],andtechniquesthatexploittheabilityoftheinfer-thispaper,weextendtheinferencenetworkencenetmodeltorepresentstructureinthequery.modelintroducedbyTurtleandCrofttoin-Theothermajortopicaddressedinthispaperisthecluderelevanc

4、efeedbacktechniques.Thedif-eectoffulltextcollectionsonrelevancefeedbacktech-ferencebetweenrelevancefeedbackontextab-niques.Virtuallyallofthepreviousrelevancefeed-stractsandfulltextcollectionsisstudied.Pre-backexperimentshavebeendoneusingcollectionsofliminaryresultsforrelevancefeedbackon

5、thedocumentabstracts.Fulltextcollectionsarebecom-structuredqueriessupportedbytheinferenceingincreasinglyimportant,andthereisthepossibilitynetmodelarealsoreported.thattheincreasedamountoftextintheidentiedrel-evantdocumentswillmaketheselectionandweightingoftermsmoredicult.1Introduction1.

6、1PriorWorkRelevancefeedbackmethodsininformationretrievalat-tempttoimproveperformanceforaparticularquerybyWorkonrelevancefeedbackmethodsininformationre-modifyingthequery,basedontheuser'sreactiontotrievalhasalonghistory[16,4].Rocchio[13]describestheinitialretrieveddocuments.Specically,the

7、user'sanelegantapproachtorelevancefeedbackinthevectorjudgementsoftherelevanceornon-relevanceofsomeofspacemodel.Heshowshowtheoptimalvectorspacethedocumentsretrievedareusedtoaddnewtermstoquerycanbederivedusingvectoradditionandsub-thequeryandtoreweightqueryterms.Forexample,i