Keyword weighting schemes tried at Southern Methodist University in our Voyager keyword search. The column highlighted in green represents our current weights, implemented in our catalog.

1. Proposed keyword field weighting
Sarah Haight Sanabria
9/1/2009
Fields, in descending order of importance Proposal 1 Proposal 2 Proposal 3 Proposal 4 Proposal 5
Title fields Rev.9/23
245a 395 150 200 250 395
130a 390 110 175 230 390
240a 385 110 175 225 385
243a 380 110 175 220 380
246a 375 105 150 205 375
740a 370 105 150 200 370
245b 365 100 330
246b 360 100 325
700t 355 95 55 65 320
710t 350 95 55 60 315
730a 345 95 55 55 310
711t 340 95 55 50 305
780t 335 90 250
785t 330 90 245
247a 325 90 240
765t 320 85 235
767t 315 85 230
830a 310 85 225
440a 305 85 220
490a 300 85 215
810t 295 85 210
811t 290 85 205
800t 285 85 200
Author fields
245c 280 80 100 150 365
100a 275 75 95 145 360
110a 270 75 95 140 355
111a 265 75 95 135 350
700a 260 70 90 130 345
710a 255 70 90 125 340
711a 250 70 90 120 335
810a 245 60 195
811a 240 60 190
800a 235 60 185
511a 230 60 180
Subject fields
650a 225 50 75 100 300
651a 220 45 70 95 295
600a 215 40 65 90 290

2. 610a 210 40 65 85 285
611a 205 40 65 80 280
630a 200 40 65 75 275
655a 195 35 60 70 270
600t 190 30 55 45 265
610t 185 30 55 40 260
611t 180 30 55 35 255
650x 175 30 175
651x 170 30 170
600x 165 25 165
610x 160 25 160
611x 155 25 155
650z 150 20 150
651z 145 20 145
600z 140 20 140
610z 135 20 135
611z 130 20 130
Contents fields
505a 125 10 50 30 125
505t 120 10 50 25 120
505r 115 10 50 20 115
Extra fields to weight
300e 110 110
520a 105 105
500a 100 100
508a 95 95
534t 90 90
534f 85 85
534e 80 80
534a 75 75
590a 70 70
653a 65 65
260a 60 60
260b 55 55
580a 50 50
547a 45 45
250a 40 40
546a 35 35
538a 30 30
310a 25 25
321a 20 20