Introduces a novel approach to unsupervised text summarization. Proposes an "information-centric" approach to evaluation, where the quality of summaries is judged not in terms of how well they match human-created summaries but in terms of how well they represent their source documents in information retrieval tasks such as document…

Optimum conditions for gifted students in regular classrooms are discussed, including the advantages of cluster grouping and curriculum compacting. The importance of providing positive teacher attitudes toward gifted students and promoting psychological safety for the student who is gifted are emphasized. Seven cognitive and affective classroom…

Children were tested at ages four and six for recall of clusterable objects under play and sort conditions. Conceptual clustering predicted recall performance of six-year olds in both conditions and of four-year olds in the sort condition. The stability of memory variables was low with the exception of free recall. (BC)

Describes a study conducted on the cystic fibrosis (CF) database, a subset of MEDLINE, that investigated clustering structure and the effectiveness of cluster-based retrieval as a function of the exhaustivity of the uncontrolled subject descriptions. Results are compared to calculations for controlled descriptions based on Medical Subject Headings…

A cluster analytic study was conducted to derive behaviorally homogeneous subtypes of pervasive developmental disorders (PDD) based on a range of behavioral symptoms that characterize autism. Analysis of data on 34 children with PDD, 27 of whom met criteria for autism, indicated 4 distinct groups differing on independent measures of social,…

The present study extends the literature base that is answering the call to examine the validity of J. L. Holland's (1959, 1997) 6 types of themes (realistic [R], investigative [I], artistic [A], social [S], enterprising [E], and conventional [C]) in his typology when applied to populations that are culturally different from the populations with…

Knowledge restructuring occurs when people shift to a new strategy or representation during learning. Although knowledge restructuring can frequently be experimentally encouraged, there are instances in which people resist restructuring and continue to use an expedient but imperfect initial strategy. The authors report 3 category learning…

Many forms of literacy exist. Each literacy is an integration of ways of thinking, acting, interacting, and valuing. To understand the impact of agriculture (i.e., farming, ranching, forestry, and fisheries) and the contributions and interactions to the environment (e.g., losses of biological diversity, soil degradation, air and water pollution,…

This article reviews the claims for the new economy as necessary background to analyzing changes in knowledge production and the role of the university in the so-called learning economy. The article develops an argument for "knowledge networks" as a basis for the university to promote regional development at home and international development…

This fact sheet on cluster grouping of gifted students explains what cluster groups are, contrasts cluster grouping with tracking, offers a rationale for cluster grouping, outlines the special learning needs of gifted students, lists specific skills needed by cluster teachers, points out that cluster grouping should supplement rather than replace…

This paper describes how educators can develop authentic enrichment clusters to provide highly engaging learning activities that make schools enjoyable places for gifted students. Part 1 of the paper discusses the importance of authentic learning, in which the student applies relevant knowledge, thinking skills, and interpersonal skills to the…

An exploration of age-related characteristics of children's personal categorizing schemes and relationships between free recall clustering (measured in reference to these schemes), and the number of items recalled. The 60 subjects were from five grade levels: 1, 4, 7, 10 and college. (Author/SDH)

The generalizability of Holland's characterizations of adults within the occupational categories was investigated in a group of 402 Mexican-Americans. The personality characteristics of the male groups provide strong support for the generalizability of Holland's characterizations to Mexican-American males. (Author)

Experiments were performed to determine the feasibility of using ALCAPP as one form of on-line dialogue. Assuming the ALCAPP (Automatic List Classification and Profile Production) system is in an on-line mode, investigations of those parameters which could affect its stability and reliability were conducted. Fifty-two full test documents were used…