Discusses results of searches using a variety of query formulations with several Internet search engines which show that strategies intended to give narrower and more precise results may not give improvements in precision even though they result in fewer hits. Describes searches that were performed by students in graduate information retrieval…

Describes a study that investigated the effect of three different Web menu designs on users' information-seeking performance and attitudes. Results of analysis of variance showed different effects of menu design on both searching performance and browsing performance, but no significant differences in users' perceptions. (Contains 75 references.)…

Reports an approach to automatic thesaurus construction for Chinese documents. Presents an effective Chinese keyword extraction algorithm. Compared to previous studies, this method speeds up the thesaurus generation process drastically. It also achieves a similar percentage level of term relatedness. Includes three tables and four figures.…

Examines various ways of dividing the labor of an information search between the person and the system. Different configurations of two dimensions--degree of system involvement in searching and types of search activity carried out by the person or system--are discussed. Recommendations for further research and development are offered. (49…

Describes study that compared the costs of online searching on six databases in four systems. Costs of the search phase and the output phase are analyzed separately; transmission rate and telecommunication costs are examined; and the effects of pricing structures on online searches are discussed. (five references) (LRW)

The article discusses using Boolean logic as a tool for searching computerized information retrieval systems in special education and rehabilitation technology. It includes discussion of the Boolean search operators AND, OR, and NOT; Venn diagrams; and disambiguating parentheses. Six suggestions are offered for development of good Boolean logic…

Discusses the distinctive differences between the English and Chinese languages from the system designer's point of view and explores the potential problems for Chinese information retrieval systems, focusing on character entry and retrieval. The advantages and disadvantages of current approaches are discussed, and a regular expression search…

Describes the differences between English and Chinese information retrieval and the problems with Chinese character entry and encoding. It is argued that regular expression searching facilitates Chinese character entry and retrieval. Mathematical models are developed for controlling noisy characters retrieved by regular expressions containing…

Describes desired software enhancements identified by the Southern California Online Users Group in the areas of search language, database selection, document retrieval and display, user interface, customer support, and cost and economic issues. The need to prioritize these wishes and to determine whether features should reside in the mainframe or…

Describes a model for the workload of a full text retrieval system and of a simulation model for a version of an existing system called Full/Text. The effectiveness of various data caching strategies using the 2 models are explored, and the impact of various parameters on the strategies are evaluated. (13 references) (LRW)

Discusses the problems caused for both users and systems by queries containing negation, and presents an algorithm for transforming Boolean queries with negated terms into queries without negation using a hierarchical thesaurus. A set of user requests submitted to an academic library are also examined to determine the pattern and frequency of use…

Offers 20 multiple choice questions to test the reader's knowledge of characteristics of the ERIC online database. The levels of expertise indicated by scores obtained on the quiz are given and suggested further readings are provided. (CLB)

Describes CD-ROM and its use as a new form of instructional technology. Topics discussed include the role of software in searching databases; benefits of CD-ROM over traditional materials; the need for adequate instruction on searching, including examples of necessary skills for effective searching; and guidelines for search strategies. (LRW)

Discusses the use of fax transmissions. Highlights include searching by fax, including online service, print and electronic publishing, and database producers; customer service, including documentation updates, new product announcements, and marketing materials; document delivery; problems; and fax messaging. (four references) (LRW)

Using a newspaper article database, this study analyzed the effects of ellipsis and anaphor resolution on proximity searching in a full-text database; 154 keyword pairs in different categories were created. Findings indicate that some resolution method might be developed only for proper name phrases to support keyword-based full-text information…