This paper is a content analysis of three general encyclopedias, "Encyclopedia Americana" (EA), "Encyclopaedia Brittanica" (EB), and "World Book Encyclopedia" (WBC), which quantifies the treatment of the occult. Entries are selected from each by starting with the article "Occultism" and tracing all…

This paper uses the subject of job satisfaction to compare subject access by ERIC descriptors and Library of Congress subject headings (LCSH). A description of the study methodology precedes a definition of job satisfaction and background information on the topic. Lists of ERIC and LCSH equivalents to job satisfaction subject terms developed by…

Heuristic methods for the construction of term classes are presented and experimental results are obtained to illustrate the usefulness of the method. (Author/PF)

An automatic classification technique has been developed, based on the character structure of words. (Author)

An automatic classification technique using patterns formed by citations in document bibliographies was found to give 62 percent precision and 45 percent recall in a sample file of physics documents. (PF)

Describes a clustering algorithm designed for dynamic data bases and presents an update procedure which maintains an effective document classification without reclustering. The effectiveness of the algorithms is demonstrated for a subset of the Cranfield collection. (Author)

Describes a method for automatically segmenting words into their stems and affixes using certain statistical properties of a corpus to indicate where words should be divided. (Author/PF)

Recommendations for the choice of corporate authorship and the form of corporate name are proposed as bases for international agreement in this area of cataloging. These recommendations are based on three assumptions: (1) that main entries are necessary and important; (2) that choice between conflicting alternatives should be to select that…

THE AVAILABILITY OF STUDENTS AT THE UNIVERSITY OF DAYTON HAD SUGGESTED THEIR POSSIBLE USE AS INDEXERS FOR INDEXING DOCUMENTS FOR THE AEROSPACE MATERIALS INFORMATION CENTER (AMIC). A STUDENT HAD BEEN EMPLOYED TWO YEARS AGO AND INFORMALLY TRAINED IN INDEXING. THE SUCCESS OF THAT EXPERIENCE, THE SUCCESSFUL DEVELOPMENT OF A CONTROLLED VOCABULARY, AND…

GUIDELINES AND CONVENTIONS ARE PRESENTED FOR THE SELECTION OF APPROPRIATE TECHNICAL SUBJECT INDEXING AND RETRIEVAL TERMINOLOGY AND THE DISPLAY OF THIS TERMINOLOGY IN A THESAURUS FORMAT. THESE CONVENTIONS WERE DEVELOPED BY PROJECT LEX, THE DOD TECHNICAL THESAURUS TASK FORCE, IN COOPERATION WITH THE ENGINEERS JOINT COUNCIL. A DISCUSSION IS GIVEN OF…

This report summarizes the frequency of use of the 7144 descriptors used for indexing technical reports in the Defense Documentation Center (DDC) collection. The descriptors are arranged alphabetically in the first section and by frequency in the second section. The frequency data cover about 427,000 AD documents spanning the interval from March…

A low-cost automatic classification method is reported that uses computer time in proportion to NlogN, where N is the number of information items and the base is a parameter, some barriers besides cost are treated briefly in the opening section, including types of intellectual resistance to the idea of doing classification by content-word…

This report describes a quantitative study of subject-indexing as it is being performed by catalogers who are developing an augmented catalog as part of Project Intrex. Learning curves for the average time taken to index technical documents on a per-page basis were derived for a group of indexers. The average indexing times per page were also…

This report presents a procedure for compiling a typed index using a DECsystem 10 computer without index cards, with the following objectives: (1) to increase compilation speed of a typed index; (2) to provide a machine-readable version of an index that can be edited rapidly; (3) to provide two forms of an index--one arranged by page number to…