Presents an interpretive theory assigning all text to "Linguistic Worlds" (LWs). Shows how a special deictic LW (needed for default attribution to the speaker and useful for describing parentheticals, evaluative adjectives, and epitheticals) gives the capacity to characterize shifts in point of view accompanying the indirect first-person speech of…

Provides a technical analysis of the factors involved in the ability of latent semantic analysis to assess student knowledge (grading essays and matching students with appropriate instructional texts). Addresses the role of technical vocabulary, how long the student essays should be, and how one deals with the directionality of knowledge in the…

Introduces this special issue which describes several approaches to semantic knowledge representations. Discusses the various quantitative procedures employed in the articles, noting that they can also serve as theoretical approaches to knowledge representation. (SR)

Describes a computational model of high-dimensional context space: the Hyperspace Analog to Language (HAL). Shows that HAL provides sufficient information to make semantic, grammatical, and abstract distinctions. Demonstrates the cognitive compatibility of the representations with human processing; and introduces a new methodology that extracts…

Offers an introduction to the theory and implementation of Latent Semantic Analysis (LSA), a theory and method for extracting and representing the contextual-usage meaning of words by statistical computations applied to a large corpus of text. Gives an overview of applications and modeling of human knowledge to which LSA has been applied. (SR)

Comments on several quantitative approaches to semantic knowledge representations (the focus of this special issue). Points out some of the ways in which Latent Semantic Analysis and Hyperspace Analog to Language fall short of being plausible theories about psychological reality. Examines in-principle failures and wrong-kind failures that arise in…

Assesses three papers in this volume, those by Wellman and Estes, Olson and Torrance, and Hall and Nagy, for their treatment of the following: (1) definition of semantic space, (2) defining children's processes of understanding that space, and (3) describing the contexts in which cognitive language is used. (AEW)

Demonstrates the value of quantitative analysis of discourse options by focusing on two discourse options for the representation of cause and effect. (HTH)

Discusses focusing, the manner in which speakers center attention on a particular element of discourse, and describes a process model of focusing that specifies what syntactic, semantic, and world knowledge constraints are needed for a hearer to track a speaker's focus in a discourse. (FL)

Examines the extent to which the structure of simple conversations influences the subsequent memorability of dialogues. (FL)

Introduces the Knowledge Digraph Contribution (KDC) data-analysis methodology for quantitatively measuring the degree to which a given knowledge digraph can account for the occurrence of specific sequences of propositions in recall, summarization, talk-aloud and question-answering protocol data. Notes the applicability of this approach to the…

Illustrates use of Latent Semantic Analysis (LSA) for predicting coherence through reanalyzing two studies that manipulated coherence of texts and assessed readers' comprehension. Finds that LSA predicts effects of text coherence on comprehension. Notes that LSA can be applied as an automated method that produces coherence predictions similar to…

Argues that researchers in the area of discourse comprehension and mental representation of discourse will likely feel motivated to adopt highly quantitative research techniques described in the articles in this special issue. Notes that ability to do so will be enhanced by availability of well-documented, easy-to-use computer software, or…

Compares semantic uses of mental state words by children four and a half to five years old. Suggests that children's linguistic and cognitive capacities can be influenced a great deal by subtle situational factors and that the effects vary according to the child's cultural background. (AEW)

Proposes a top-down procedural model for the dynamic extraction and use of context structure to resolve references. (FL)