TY  - JOUR
AB  - This paper is concerned with recent work in the theory of information retrieval. More particularly, it is concerned with theories which tackle the problem of retrieval performance, in a sense which will be explained. The aim is not an exhaustive survey of such work; rather it is an analysis and synthesis of those contributions which I feel to be important or find interesting.
VL  - 33
IS  - 2
SN  - 0022-0418
DO  - 10.1108/eb026639
UR  - https://doi.org/10.1108/eb026639
AU  - ROBERTSON S.E.
PY  - 1977
Y1  - 1977/01/01
TI  - THEORIES AND MODELS IN INFORMATION RETRIEVAL
T2  - Journal of Documentation
PB  - MCB UP Ltd
SP  - 126
EP  - 148
Y2  - 2024/09/19
ER  -