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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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