Correlation of indexing headings and title words in three medical indexing systems

John O'Connor

American Documentation, 1964, vol. 15, issue 2, 96-104

Abstract: The Montgomery‐Swanson study of Index Medicus heading‐title correlations is discussed. Some presently unanswered questions relevant to practical use of their automatic indexing technique are indicated. Contrasted with the 86% heading‐title correlation figure which they found for Index Medicus are the following ranges (based on small samples): Index‐Handbook of Cardiovascular Agents: 19‐45%; Merck Sharp and Dohme Retrieval System: 40‐68%; NIH Research Grants Index: 13‐39%.

Date: 1964
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