This paper provides a portrayal of Z39.50 (a communications protocol that enables two systems to exchange messages for the purpose of information retrieval) that explains its flexibility in response to a variety of information retrieval requirements in the networked environment. The first section presents an overview of Z39.50, including the…

Results indicate that training in semantic awareness increased problem-solving ability for both analytic and synthetic problems. (Author)

Describes the impact of the tools being developed as part of the Second Generation Instructional Design (ID2) Research Program on the process of instructional design. Highlights include domain semantic meaning; instructional design expert systems; rapid prototyping; the instructional systems development process; and the ID2 rapid prototyping…

Proposes a model to account for the uses to which the individual puts formulaic language, and specifically, what determines the choice for that person of a holistic or analytic processing strategy at any given moment. Formulaic language is used to describe a phenomenon that encompasses various types of wordstrings that appear to be stored and…

Discussion of visualization for information retrieval, that transforms unseen internal semantic representation of a document collection into visible geometric displays, focuses on DARE (Distance Angle Retrieval Environment). Highlights include expression of information need; interpretation and manipulation of information retrieval models; ranking…

Discusses thesauri as tools for multilingual information retrieval and cross-cultural communication. Considers the need for multilingual thesauri and the importance of explicit conceptual structures, and introduces a pilot thesaurus, InfoDEFT (Information Deutsch-English-Francais Thesaurus), as a possible model for new online thesauri which are…

This paper explores the issues involved in the linguistic characterisation of disordered discourse and the ways in which a Systemic Functional Linguistic framework addresses these issues. For many years, language disorders were described in terms of formal grammars, with "breakdown" discussed in terms of one or more of the traditional levels of…

In this paper, we investigate the interplay between phonological facilitation and semantic interference effects in picture naming. We use a double distractor variant of the classic picture-word interference paradigm to investigate whether the reported interaction between these effects is dependent on the two types of related information being…

The majority of the models which attempt to explain category-specific deficits are based on the assumption that the conceptual knowledge is represented in a permanent way in memory (abstractive view). Carbonnel, Charnallet, David, and Pellat (1997) showed that a non-abstractive view would be more suitable to account for some of these cases. The…

Most words in English are ambiguous between different interpretations; words can mean different things in different contexts. We investigate the implications of different types of semantic ambiguity for connectionist models of word recognition. We present a model in which there is competition to activate distributed semantic representations. The…

The authors conducted 2 experiments to assess how phonologically related lures are rejected in a false memory paradigm. Some phonological lures were emotional (i.e., taboo) words, and others were not. The authors manipulated the presence of taboo items on the study list and reduced the ability to use controlled rejection strategies by dividing…

Research on cognitive modeling of information search and Web navigation emphasizes the importance of "information scent" (the relevance of semantic cues such as link labels and headings to a reader's goal; Pirolli & Card, 1999). This article shows that not only semantic but also structural knowledge is involved in navigating the Web…

According to the Lexical Restructuring Model (Metsala & Walley, 1998), children move from holistic representations of words, to syllabic representations, and finally to phonemic representations through a restructuring process driven by their developing lexical base. In contrast, the psycholinguistic grain size theory put forth by Ziegler and…

The relationship between meaning and vocabulary in four professions--anthropology, linguistics, psychology, and computer science--is examined. Current relational theories within each profession are compared with respect to goals, methodologies, and proposed relations. Certain core relations appear in each discipline, and these are tabulated and…

In a model of the functioning of short term memory, the encoding of information for subsequent storage in long term memory is simulated. In the encoding process, semantically equivalent paragraphs are detected for recombination into a macro information unit. (HOD)