SP500207
NIST Special Publication 500-207: The First Text REtrieval Conference (TREC-1)
Vector Expansion in a Large Collection
chapter
E. Voorhees
Y-W. Hou
National Institute of Standards and Technology
Donna K. Harman
Computer-aided Crime Detection
Document must describe a computer application to crime solving.
To be relevant, a document must describe either an actual or a theoretical computer
application to detective work, by the police or by another law enforcement orga-
nization. A relevant document could include techniques such as profiling criminals
and their methods of operation, identifying finger prints, spotting anomalies, etc.
1. police, detective, sleuth, enforcement agency
2. clue, records, fingerprints, methods
Figure 2: Text of Topic 95
Surrogate Motherhood
Document will report judicial proceedings and opinions on contracts for surrogate
motherhood.
A relevant document will report legal opinions, judgments, and decisions regarding
surrogate motherhood and the custody of any children which result from surrogate
motherhood. To be relevant, a document must identify the case, state the issues
which are being decided and report at least one ethical or legal question which arises
from the case.
1. surrogate, mothers, motherhood
2. judge, lawyer, court, lawsuit, custody, hearing, opinion, finding
Figure 3: Text of Topic 70
Query
Expanded
Weight
.20626
.18793
.16088
.40100
.10375
.08165
.08233
.13792
.25840
.16667
.08366
Vectors for Topic 95
Unexpanded
Weight
.25682
.23399
.11148
.27738
.08331
Concept
enforc
fingerprint
print
sleuth
law
felon
crook
constabl
espial
catch
outlaw
Query
Expanded
Weight
.15901
.11605
.50365
.14090
.56104
.24603
.14946
.10880
.18264
.10257
Vectors for Topic 70
Unexpanded
Weight
.08546
.06181
.48892
.08597
.69887
.12226
.20529
Concept
decid
proceed
mother
case
surrog
judg
custod
matern
judicial_decid
legal[OCRerr]act
Figure 4: Query Vectors for Sample Topics
349