Journal of Documentation: Volume 31 Issue 4

THE EDITORIAL BOARD

The composition of the Editorial Board has recently undergone a fairly fundamental change as a consequence of the resignation, for a variety of reasons, of four of its members. Mr…

THE EFFECT OF A LARGE‐SCALE PHOTOCOPYING SERVICE ON JOURNAL SALES

MAURICE B. LINE, D.N. WOOD

The proposition is examined that large‐scale photocopying, such as that practised by the British Library Lending Division, affects the sales of journals. There is little evidence…

TOWARDS AUTOMATIC INDEXING: AUTOMATIC ASSIGNMENT OF CONTROLLED‐LANGUAGE INDEXING AND CLASSIFICATION FROM FREE INDEXING

B.J. FIELD

A number of techniques have been studied for the automatic assignment of controlled subject headings and classifications from free indexing. These techniques involve the automatic…

A PERFORMANCE YARDSTICK FOR TEST COLLECTIONS

KAREN SPARCK JONES

It would be very helpful in retrieval experiments if good retrieval performance for a test collection was known, so that performance for particular devices could be fully…

JOURNAL ACQUISITION BY LIBRARIES: SCATTER AND COST‐EFFECTIVENESS

S.E. ROBERTSON, SANDY HENSMAN

The traditional Bradford approach to bibliographic scatter involves ranking journals in order of productivity. It is suggested that this approach should be modified, with a view…

MEASURES OF LANGUAGE EFFECTIVENESS AND THE SWETSIAN HYPOTHESES

M.H. HEINE

‘Language measures’ such as Swets's E or Brookes's S, which measure the separation of the PMFs defined by a weighting formula applied to the sets of relevant and non‐relevant…

THE USE OF THE BRADFORD‐ZIPF DISTRIBUTION TO ESTIMATE EFFICIENCY VALUES FOR A JOURNAL CIRCULATION SYSTEM

PAUL B. MAYES

A value for how efficient a journal circulation system is at attracting the number of readers it ‘should’ attract is estimated using the Bradford‐Zipf distribution. This method is…

CITATION ANALYSIS

JOHN MARTYN

Citation analysis for the purposes of this survey is taken to mean the analysis of the citations or references which form part of the scholarly apparatus of primary communication…