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Posted to dev@lucene.apache.org by bu...@apache.org on 2002/09/03 20:30:22 UTC

DO NOT REPLY [Bug 12273] New: - Hits are only ranked in groups of 100

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=12273

Hits are only ranked in groups of 100

           Summary: Hits are only ranked in groups of 100
           Product: Lucene
           Version: 1.2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Search
        AssignedTo: lucene-dev@jakarta.apache.org
        ReportedBy: birsan@ca.ibm.com


When the number of hits returned from a search is large, say 500 hits, each 
group of 100 hits is correctly ranked from higher to lower score, but the 
ranking is not valid across the entire set of hits. That is, hit number 100 can 
have a lower score than hit number 101. Here are the scores from a search that 
returned over 100 documents. 

0.50862956
0.49759585
0.48154435
0.4791306
0.46233732
0.45172864
0.45048255
0.45009238
0.44985813
0.42255348
0.42255348
0.41913056
0.41733846
0.41214272
0.4030633
0.4004105
0.3992095
0.39120853
0.3901293
0.3901293
0.3832849
0.3826121
0.3774968
0.3770312
0.36918402
0.36644575
0.36644575
0.3629777
0.35853016
0.35200316
0.35200316
0.35200316
0.34572554
0.34221864
0.34221864
0.3405033
0.33753246
0.33708104
0.33708104
0.33708104
0.33530447
0.33393952
0.33193448
0.33154616
0.32692185
0.32692182
0.3259532
0.3259532
0.3213942
0.3210296
0.32011622
0.32011622
0.32007968
0.32007968
0.3194204
0.31864953
0.31853926
0.31853926
0.31643665
0.31643665
0.31484118
0.31383523
0.31383523
0.309741
0.309741
0.3082249
0.3082249
0.3079968
0.3078447
0.3049781
0.30301332
0.30301332
0.30301332
0.301774
0.301774
0.301774
0.301774
0.3017352
0.30006158
0.2963701
0.29450694
0.29219145
0.29219142
0.29038218
0.29038218
0.29038218
0.29038218
0.29038218
0.29038218
0.28713757
0.28136954
0.28070277
0.28070277
0.28061932
0.27919677
0.27662617
0.27586305
0.27548075
0.27548075
0.27548075
*************** notice that next hit (hit index 101) gets a higher score ****
0.5121219
0.51003724
0.5069748
0.5029985
0.50177497
0.4888686
0.48786172
0.48786172
0.48651582
0.48609444
0.4858415
0.4858415
0.4858415
0.48041296
0.48041296
0.48041296
0.4790462
0.4790462
0.47041398
0.47041398
0.46568614
0.46559808
0.46559808
0.46170923
0.46090972
0.4580558
0.4580558
0.4558137
0.45509386
0.45509386
0.45473355
0.45265612
0.45265612
0.45038712
0.4453547
0.4453547
0.43905306
0.43530366
0.43454987
0.43454987
0.43454987
0.4311416
0.42942727
0.4270349
0.42549676
0.42511135
0.4233726
0.4233726
0.4233726
0.42250058
0.4213351
0.4213351
0.4213351
0.4164436
0.4164436
0.4164436
0.4164436
0.4105968
0.40769216
0.40718925
0.40486795
0.40486795
0.40486795
0.4007988
0.39915955
0.39833736
0.39833736
0.39689445
0.39689445
0.39689445
0.39201164
0.39201164
0.39201164
0.39033553
0.39033553
0.38462454
0.38462454
0.38409147
0.38409144
0.38409144
0.3802311
0.3802311
0.3802311
0.3802311
0.3802311
0.3802311
0.3802311
0.3802311
0.37698406
0.3763312
0.37633118
0.37633118
0.37633118
0.3712884
0.3712884
0.36438113
0.36438113
0.3621249
0.3621249
0.3621249
0.3790579
0.3790579
0.3790579
0.3790579
0.3790579
0.37869948
0.37762204
0.37738222
0.37291747
0.37291747
0.36852145
0.36332545
0.36332545
0.36257714
0.36257714
0.36170214
0.36170214
0.36170214
0.3615769
0.3615769
0.35206172
0.35206172
0.34986898
0.34986898
0.34986898
0.34986898
0.34883234
0.34714118
0.34609634
0.34609634
0.34609634
0.34609634
0.34609634
0.34307477
0.34307477
0.34254655
0.34254655
0.34254655
0.34254655
0.34254655
0.34254652
0.34042552
0.33641246
0.33641246
0.33641246
0.33303136
0.33180574
0.33166927
0.3309861
0.32961556
0.32961556
0.32961556
0.32961556
0.32727242
0.32727242
0.32630277
0.3235162
0.32295597
0.32295597
0.32295597
0.32295597
0.32295597
0.3191489
0.314001
0.314001
0.31313482
0.31313482
0.31313482
0.30949947
0.30949947
0.30949947
0.30949947
0.30949947
0.30448586
0.30448586
0.30448586
0.30448586
0.30448586
0.30448586
0.30448586
0.30089647
0.29787233
0.29787233
0.29787233
0.29787233
0.29665402
0.29665402
0.29665402
0.29665402
0.29665402
0.29604298
0.29604298
0.29604298
0.29604298
0.2949706
0.2949706
0.2949706
0.2949706
0.2949706
0.28545544
0.28545544
0.28545544
0.28545544
0.28545544
0.28545544
0.28545544
0.28545544
0.28545544
0.28545544
0.28545544
0.28545544
0.2825865
0.2825865
0.2825865
0.2825865
0.2825865
0.2825865
0.28017324
0.28017324
0.27968806
0.27968806
0.27692282
0.2765957
0.27594024
0.27594024
0.27594024
0.27594024
0.27594024
0.26913
0.26913
0.26913
0.26913
0.26913
0.26913
0.26642507
0.26642507
0.26642507
0.26642507
0.26642507
0.26642507
0.26369244
0.26369244
0.26369244
0.26369244
0.2569099
0.2569099
0.2569099
0.25638077
0.25567347
0.25567347
0.25174803
0.25174803
0.24739473
0.24739473
0.24739473
0.24739473
0.24739473
0.24739473
0.24739473
0.24739473
0.24739473
0.24721168
0.24721168
0.242217
0.242217
0.242217
0.23787954
0.23787954
0.23787954
0.23787954
0.23404256
0.23404256
0.23073089
0.23073089
0.23073089
0.2287605
0.2287605
0.2287605
0.2287605
0.2287605
0.22836436
0.22836436
0.22836436
0.22836436
0.22836436
0.22836436
0.22836436
0.22836436
0.22836436
0.22836436
0.22836436
0.21884918
0.21884918
0.21884918
0.21884918
0.21884918
0.21884918
0.21884918
0.21884918
0.21884918
0.2188492
0.21530402
0.21530402
0.21530402
0.21530402
0.21530402
0.209334
0.209334
0.209334
0.209334
0.209334
0.209334
0.209334
0.209334
0.209334
0.209334
0.2018475
0.2018475
0.2018475
0.2018475
0.19981883
0.19981883
0.19981883
0.19981883
0.19981883
0.19981883
0.19981883
0.19981883
0.19776933
0.19776933
0.19148938
0.19148938
0.19030367
0.19030367
0.19030367
0.19030367
0.19030367
0.19030367
0.19030367
0.19030367
0.188391
0.188391
0.188391
0.188391
0.188391
0.188391
0.18128857
0.18078847
0.18078847
0.18078847
0.18078847
0.18078847
0.18078847
0.18078847
0.18078847
0.1749345
0.17127329
0.17127329
0.17127329
0.17127329
0.17127329
0.17127329
0.17127329
0.17021276
0.17021276
0.17021276
0.17021276
0.17021276
0.1648078
0.16315141
0.1617581
0.1617581
0.1617581
0.1617581
0.1617581
0.1617581
0.1617581
0.1617581
0.1617581
0.1617581
0.1617581
0.1617581
0.1617581
0.1617581
0.1617581
0.1617581
0.1617581
0.16147801
0.16147801
0.15224293
0.15224293
0.15224293
0.15224293
0.15224293
0.15224293
0.15224293
0.15224293
0.15224293
0.14832702
0.14272773

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