Extraction of facet terms from article titles and their display in tabular form

Abstract

A trial was carned out to effect automatic extraction of significant words from titles of scientific papers and display them in tabular form. The extraction algonthm is based on the simple syntactic patterns developed around a "pivot word." which has high control over the use of functional words in its vicinity. A pivot word and prepositions as well as punctuation marks delimit and extract title words; no word dictionary is used. The approach was applied to article titles in analytical chemistry. which include "determination(s)" and "determining" as pivot words. The syntactic patterns were expressed by Backus Naur Form notations, from which extraction rules were denved. Sample titles were processed on a personal computer, loaded with LISP programs for information extraction and table format display in accordance with the facets essential to analy sis. The adequacy of the approach was regarded as good with regard to its simplicity. This approach not only extracts keywords from article titles but also provides them with proper roles in conformity with the facets pertinent to the subject concerned.

Syntactic and semantic structure analysis of article titles in analytical chemistry

“…The subtotals indicate a simple arithmetic sum of those percentages. In most titles, the verbal nouns of analysis-related words are directly followed by &dquo;of': for example, Table I Frequencies of analysis-related words in journal paper titles (Ati(il.i,tical Abstracts, 1981-1990) Table 2 Percentages of major full forms for word stems in journal paper titles ( .4nafvti<.al Abstracts, 1981Abstracts, -1990 92% of &dquo;determination(s>&dquo; are just before &dquo;of ' [2]. Syntactic patterns of titles Table 3 shows typical titles which contain analysis-related words and are actually found in Analytical Abstracts.…”

“…(2) Complex phrase; analyte in main phrase and procedure in subordinate phrase. Determination of permethrin and tetramethrin by isotachophoretic analysis of hydrolytic products.…”

“…Extraction rules, similar to those reported in the previous paper [2], can be easily worked out with particular attention to prepositions and analysisrelated words which delimit word strings for respective facets.…”

“…In fact, properly expressed titles of scientific papers not only identify themselves but also tell what they are about. In a previous paper [2], we tried to extract significant terms from article titles and to arrange them in a facet table easier to see than the titles themselves. This report is an extension of the previous paper and, in addition, discusses the possibility of automatic assignment of facet categories to title words, which may further extend the applicability of this approach.…”