TY - JOUR
AU1 - SPARCK JONES, KAREN
AB - The exhaustivity of document descriptions and the specificity of index terms are usually regarded as independent. It is suggested that specificity should be interpreted statistically, as a function of term use rather than of term meaning. The effects on retrieval of variations in term specificity are examined, experiments with three test collections showing in particular that frequentlyoccurring terms are required for good overall performance. It is argued that terms should be weighted according to collection frequency, so that matches on less frequent, more specific, terms are of greater value than matches on frequent terms. Results for the test collections show that considerable improvements in performance are obtained with this very simple procedure.
TI - A STATISTICAL INTERPRETATION OF TERM SPECIFICITY AND ITS APPLICATION IN RETRIEVAL
JF - Journal of Documentation
DO - 10.1108/eb026526
DA - 1972-01-01
UR - https://www.deepdyve.com/lp/emerald-publishing/a-statistical-interpretation-of-term-specificity-and-its-application-HIiyyk03Wd
SP - 11
EP - 21
VL - 28
IS - 1
DP - DeepDyve
ER -