Vocabularies are linguistic resources that make it possible to access knowledge through words. They can constitute a mechanism to identify, describe, explore, and access all the digital resources with informational content pertaining to a specific knowledge domain. In this regard, they play a key role as systems for the representation and…

An ontology is an effective formal representation of knowledge used commonly in artificial intelligence, semantic web, software engineering, and information retrieval. In open and distance learning, ontologies are used as knowledge bases for e-learning supplements, educational recommenders, and question answering systems that support students with…

The present guidelines, preliminary in character, are an attempt to facilitate the development and application of a standardized method of multilingual thesaurus construction and to reduce the number of arbitrary variations in thesaurus techniques. In the preparation of these guidelines the approach has been theoretical rather than practical.…

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)

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…

These guidelines for the establishment and development of monolingual scientific and technical thesauri for information retrieval are published in an attempt to lay the basis for compatability, both at the present and in the future, of thesauri that are being elaborated simultaneously in most of the disciplines of science, basic as well as…

Presents a new corpus-based method for constructing a thesaurus based on lexical cooccurrence. Each word is represented as a vector in a multi-dimensional space that captures cooccurrence, and a similarity measure compares these vectors. Two methods for using these thesaurus vectors in information retrieval are described. (Author/LRW)

Five facets of background information are intended to be helpful to persons interested in the construction and use of a thesaurus, in the sense of a standardized language for communication with and between information storage and retrieval systems. Based on the Thesaurus of Engineering and Scientific Terms (TEST) as an example: (1) the thesaurus…

What is the desirability and usefulness of different thesaurus displays used either singly or in groups? Is an alphabetical listing of terms with cross references more useful to an indexer than a complete hierarchical display? Is the permuted or the rotated term index more useful to the indexer or retriever? Is an alphabetical display along with a…

This classification scheme attempts to demonstrate a method of controlling and organizing an indexing language for the physical forms of non-book media. The classification is based on the technique of facet analysis. It comprises a classification of the concepts of the subject with an alphabetical listing of the verbal descriptions of the subject.…

These guidelines are applicable in the sector of information and documentation for the preparation and development of monolingual thesauri for information storage and retrieval, irrespective of the technical field being dealt with. No provision has been made for mathematical and structural chemical formulae. The guidelines are drafted for general…

This is a revision of the "Rules for Thesaurus Preparation," published in October 1966. These rules are designed to help the Central ERIC staff and the staffs of the ERIC Clearinghouses make similar decisions related to the addition and modification of terms in the "Thesaurus of ERIC Descriptors," Second Edition. In addition to…

Demonstrates the use of a directed graph model as a tool for finding desirable minimum vocabularies to be used in indexing and information retrieval. The basic algorithm is outlined, possible enhancements to the model are discussed, and further research questions are suggested. (Author/CLB)

Suggests a unified concept of a lexical subsystem as part of an information system to deal with lexical problems in local and network environments. The linguistic and control functions of the lexical subsystems in solving problems for large computer systems are described, and references are included. (Author/BK)

Part Two of the eighteenth report on Salton's Magical Automatic Retriever of Texts (SMART) project is composed of three papers: The first: "The Effect of Common Words and Synonyms on Retrieval Performance" by D. Bergmark discloses that removal of common words from the query and document vectors significantly increases precision and that…