information retrieval data structures and algorithms (william b. frakes, ricardo baezayates)0134638379外语英文电子书

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1、CHAPTER1:INTRODUCTIONTOINFORMATIONSTORAGEANDRETRIEVAL4.3COMPRESSION............................................................................................................59SYSTEMS....................................................................

2、..........................................................94.3.1Bit-blockCompression(BC)...................................................................................591.1INTRODUCTION................................................................

3、............................................94.3.2VariableBit-blockCompression(VBC).................................................................601.2ADOMAINANALYSISOFIRSYSTEMS.................................................................104.3.3P

4、erformance.............................................................................................................621.2.1ConceptualModelsofIR.........................................................................................114.4VERTICALPART

5、ITIONING.......................................................................................621.2.2FileStructures..........................................................................................................124.4.1Bit-SlicedSignatureFile

6、s(BSSF)...........................................................................631.2.3QueryOperations.....................................................................................................134.4.2B'SSF,aFasterVersionofBSSF..............

7、..............................................................641.2.4TermOperations......................................................................................................134.4.3Frame-SlicedSignatureFile...................................

8、.................................................641.2.5DocumentOperations..............................................................................................144.4.4TheGeneralizedFrame-SlicedSignatureFile(GFSSF)...............