Relationship of keywords in titles to references cited
Wm. Mansfield Adams · American Documentation · 1967
Abstract Some machine‐produced indexes have been compared. The objectives of an index and the search procedure are analyzed. It is proposed that a hypothetical title be used for searching, not a question. This permits comparison of similar items for common characteristics. A relationship between “keywords in title” and “key references” of the same article is given. It is shown that for an efficiently produced article there will be more references than keywords in the title. This is because, according to the basic theorem of linear programming, there will be as many concepts in the article as there are completely utilized references. The structural model proposed requires additional experimental verification.