Describes the Accomplishment-Based Curriculum Development model, which provide a cohesive framework for the processes of human performance technology and instructional design. Topics include front-end analysis; behavior characteristics; information storage and retrieval; materials development; and the contributions of Joe Harless to the field.…

An n-gram is a string of characters, usually adjacent, extracted from a section of continuous text that can be used in spelling error detection and correction, query expansion, information retrieval, dictionary search, text compression, and language identification applications. This article provides an introduction to the use of n-grams in textual…

Examines various kinds of uncertainty in information science. The notion of ambiguity is defined and contrasted with the more familiar notions of randomness and vagueness. Functional forms resistant to ambiguity are defined, and it is shown how to incorporate a random component, that is itself also resistant to ambiguity, into a resilient, but…

Investigates information retrieval from hypertext on the World Wide Web. Significant main and interaction effects were found for both link density (number of links per display) and display format (paragraphs or lists) on search performance. Low link densities displayed in list format produced the best overall results. Expert browsers performed…

Presents an approach for dynamic database integration and query processing in the absence of information about attribute correspondences and global IDs. Defines different types of equivalence conditions for the construction of global IDs. Proposes a strategy based on ranked role-sets that makes use of an automated semantic integration procedure…

Presents a heuristic, attribute-based, noise-tolerant data mining program, HCV (Version 2.0) based on the newly-developed extension matrix approach. Outlines some techniques implemented in the HCV program for noise handling and discretization of continuous domains; an empirical comparison shows that rules generated by HCV are more compact than the…

Reports on an investigation which utilized multidimensional scaling (MDS) of paired comparison judgments as a means of evaluating representations for moving image documents. Discusses implications of the findings for visual information retrieval and the development of digital video collections. (Author/AEF)

This research is concerned with reusing texts produced by audio describers as a source for automatically deriving shot-level indexing for film and video products. Results reinforce the notion that audio description is not sufficient on its own as a source for generating an index to the image, but it is valuable because it describes what is going…

Discussion of terms and how they are used in queries in information retrieval focuses on a transaction log analysis of queries posed on an Internet search service that isolated basic query structure syntactic patterns. Describes a linguistic model that classified Web queries and suggests implications for information retrieval system design.…

Presents a session abstract that included speakers discussing current studies in successive searching during the information seeking process. Highlights include mediated successive searching; end-user successive searching; designing information retrieval systems to support successive searching; and search histories for user support in legal…

Presents an abstract for a planned session on the need to coordinate user studies and information retrieval system design research. Topics include human-based research and system-based research; children's information use; usability and cartographic information systems; and ethnomethodology and system design. Panelists included: Nick Belkin, Dania…

Analyzes features of the Swedish language from the viewpoint of mono-and cross-language information retrieval. Results of a comparative study that tested the degree of lexical ambiguity in Swedish, Finnish, and English suggest that part-of-speech tagging might be useful in Swedish information retrieval due to the high frequency of homographic…

Examines Internet search approaches by 123 students, and analyzes search methodologies relative to search successes. Presents three findings: (1) student experience with the Internet is closely correlated with ability to explore alternative search methods; (2) student level; and (3) a collaborative work among students in a classroom setting may…

Discussion of information handling tools focuses on natural language processing and linguistically-based techniques that help improve retrieval performance. Topics include difficulties in information retrieval, including poor questions and ambiguous words; phrase detection; disambiguation; automatic categorization; entity extraction; concept…

Describes the merging field of informetrics in a historical perspective as a generalization of bibliometrics, combining advanced information retrieval theories and methodologies with the quantitative study of information flow. Explains programs at the Center for Information Studies at the Royal School of Library and Information Science in…