We explore in this study how infants may derive phonetic categories from adult input that are highly variable. Neural networks in the form of self-organizing maps (SOMs; Kohonen, 1989, 1995) were used to simulate unsupervised learning of Mandarin tones. In Simulation 1, we trained the SOMs with syllable-sized continuous F[subscript 0] contours,…

The National Child Count of Children and Youth who are Deaf-Blind is the first and longest running registry and knowledge base of children who are deaf-blind in the world. Begun in 1986 on behalf of the U.S. Department of Education (Baldwin, 1993), it represents a thirty plus year collaborative effort between the National Consortium on…

In this article, we present a co-adaptive design approach named TE-Cap (Tutoring Experience Capitalisation) that we applied for the development of an assistance environment for tutors. Since tasks assigned to tutors in educational contexts are not well defined, we are developing an environment which responds to needs which are not precisely…

This progress report on a pilot project involving the reclassification of 1,000 titles in the Providence Public Library using data processing techniques covers the period October 1, 1967, to December 31, 1967. The major activities and accomplishments, problems, significant findings and events, dissemination activities, staff time, and future…

STARTING FROM A MODEL OF CONTEMPORARY MECHANIZED RETRIEVAL SYSTEMS AND THE CHARACTERISTICS OF INDEXING LANGUAGES USED THEREIN, THE AUTHORS DEVELOP A RATIONAL BASIS FOR USE OF THE UNIVERSAL DECIMAL CLASSIFICATION (UDC) IN THIS CONTEXT. PRACTICAL DESIGN CONSIDERATIONS FOR THE USE OF UDC IN A MECHANIZED RETRIEVAL SYSTEM ARE DISCUSSED. EXAMPLES ARE…

The papers presented at a symposium on subject retrieval held at the University of Maryland in May 1971 are contained in this proceedings volume. The titles of the speeches are as follows: (1) Subject retrieval in the seventies -- methods, problems, prospects; (2) Recent research trends in the field of information retrieval languages; (3) A…

After the Inglewood (California) Public Library converted its adult subject collection to Library of Congress, it developed an adapted LC classification for children's materials based on a two letter scheme followed by one or two numbers. In use for over five years, it makes materials easy to locate and prepares children for transition to adult…

Presents a brief history of the Library of Congress (LC) Z schedule and recent LC modifications in the treatment of subject bibliography. Description of a university library system includes a schedule for political and social sciences subject bibliography (Z7161-7166) giving alternate class numbers for systematic placement of bibliographies. (17…

Provides a portrait of the structure of the categories and tests the correlation between family resemblance and prototypicality of items. (Author)

Present work in classification is surveyed, and four major unsolved problems and 12 research problems are outlined. (PF)

It is argued that English dictionaries currently provide evaluative information in addition to descriptive information about the words they contain, and that this aspect of dictionaries should be developed and expanded on. First, the historical background and distribution of the axiological parameter in English-language onomasiological…

The author describes his meetings with Henry E. Bliss originator of an influential classification system.

Clustering and other new techniques have changed classificatory principles and practice in many sciences. Discussed are defintions, purposes of classification, principles of classification, and recent trends. (Author/RH)

Describes a system of classification to describe alphabets and to show the various degrees of formal similarity which they bear to one another. (TO)