w %JSFDUMZNBYJNJ[FUIF%$(PGUIFSFTVMUMJTUXIJMFQSFTFSWJOHUIFTPSUPSEFSCZ BUUSJCVUF w 3FTVMUTPGUIJTSFTFBSDI w 1SPQPTFBOBMHPSJUINЏ'*MUFSJOHUIBUSFUVSOTBMNPTUPQUJNBMSFTVMUTBUIJHITQFFE w "QQSPYJNBUFFSSPSBOEXPSTUDBTFDPNQMFYJUZBSFHVBSBOUFFECZBQQSPYJNBUJPO w &YQFSJNFOUTTIPXUIBUUIFCBMBODFCFUXFFOTQFFEBOEBQQSPYJNBUJPOFSSPSJT HPPE
&$ FUD w .BOZTFSWJDFTTVQQPSUTPSUJOHCZ BUUSJCVUFT UJNF QSJDF FUD w 'PSFYBNQMF UIF4&31PGlJQIPOFzPO "NB[POJOUIFPSEFSPGUIFMPXFTUQSJDF w *UFNTXJUIMPXSFMFWBODFXJMMCFPO UPQ XIJDIXJMMMFBEQPPS69 4&31PGlJQIPOFzJOUIFPSEFSPGUIFMPXFTUQSJDF POBNB[PODPKQ
w *OUIFXPSTUDBTF UIFSFJTOPHVBSBOUFFPGBQQSPYJNBUJPOFSSPS BDDVSBDZ w #FDBVTFJUEFQFOETPOUIFUISFTIPMETFUUJOH w 5JNFDPNQMFYJUZEPFTOPUJNQSPWF w *OUIFXPSTUDBTF ZFU w 5PQL015<> w $BMDVSBUFGPSBMJTUPGUPQL w 5IFO pMUFSJUXJUI015 PQUJNBMpMUFSJOH w 5IFNFUSJDNBZCFNBYJNJ[FECZNBLJOHUIFMJTUMFTTUIBOL w $BOQSPWFPQUJNBM BQQSPYJNBUFFSSPSJT w *OUIFXPSTUDBTF UIFUJNFDPNQMFYJUZJT Θ(nk) Θ(n log k + k2) [14] Spirin+ 2015. Relevance-aware Filtering of Tuples Sorted by an Attribute Value via Direct Optimization of Search Quality Metrics
w *OEFFE UIFMBSHFTU%$(TPMVUJPOJT w 5IFFMFNFOUMFGUCZ3JHIU1SVOJOHJTDBMMFESJHIULNBYJNBM w 5IFPQUJNBMTPMVUJPODPOTJTUTPOMZPGSJHIULNBYJNBM FMFNFOUT -FNNB R = [0.9,1.0,1.0,1.0] k = 3 0.9 [1.0,1.0,1.0] [1.0,1.0,1.0]
w w ʜ w w w %JTDSFUJ[FEMJTU JT w 4P %JTDSFUJ[BUJPOJOUIJTXBZDBVTFTFMFNFOUTUPCFpMUFSFECZ3JHIUQSVOJOH R = [3.00,2.99,2.98,...,0.01] [0.01,0.019) [0.019,0.039) [1.45,2.17) [2.17,3.0) Rϵ [2.17,...,2.17,1.45,...,1.45,...,0.01]
OVNCFSPGJOUFSWBMTNDBOCFEFDSFBTFE w ˠ3JHIU1SVOJOHXPSLTXFMM w FMFNFOUT w %$(PG3JT w 'JMUFSBMMFMFNFOUT %$(JTBSPVOE w "DIJFWFTBQQSPYJNBUJPO w "OEGBTUFSRVFSZQSPDFTTJOH t = g−1(ϵg(rmax /k)) rmin R = [5,0.1,...,0.1]