Surveillance video recording is becoming ubiquitous in daily life for public areas such as supermarkets, banks, and airports. The rate at which surveillance video is being generated has accelerated demand for machine understanding to enable better content-based search capabilities. Analyzing human activity is one of the key tasks to understand and…

Reports on two experiments investigating the relationship between topical subject expertise and the assessment of relevance. Results indicate that topical subject expertise enhances effects of the semantic distance model (SDM), and that relevance assessment is a contingent, psychological phenomenon that is part of the human-perception task of…

Proposes a model of the search term selection process based on an empirical study of professional searchers during the pre-online search stage; the model characterizes the selection of search terms as the navigation of different discourses. Six discourses emerged as sources of search terms: controlled vocabularies; documents and the domain; the…

Proposes a model that assists in understanding indexing on the World Wide Web and presents an experiment assessing the validity of Inverse Document Frequency (IDF) as a term weighting strategy for Web documents. Findings indicate that IDF scores are not stable in the heterogeneous and dynamic context of the Web. (Author/AEF)

The first of three articles describes fluctuations in subject searching on online catalogs over time; the second describes the level of agreement between a research library's use of subject headings and the Library of Congress subject headings; and the third discusses the advantages of incorporating Library of Congress subject headings into online…

Presents a model for the design of online catalog subject access based on three principles: the uncertainty of subject indexing, the need for greater variety in searcher's queries, and the complexity of the search process. The proposed system is based on existing Library of Congress subject cataloging. (EM)

Provides an overview of the problems with information retrieval in psychology, based on the examination of the search strategy used for a dissertation. The discussion illustrates the usefulness of a facet model for formulating search strategies for psychology literature reviews, using the same dissertation as an example. (15 references) (CLB)

Provides an interim report on a project whose goal is to provide subject access to the knowledge of mankind at least as well as the skilled reference librarian. Classification and concept formation are discussed in terms of four modules: diagnostics of information-seeking behavior, network interface, subject access, and graphic interface. (EM)

The IADIS CELDA 2012 Conference intention was to address the main issues concerned with evolving learning processes and supporting pedagogies and applications in the digital age. There had been advances in both cognitive psychology and computing that have affected the educational arena. The convergence of these two disciplines is increasing at a…