Based on systematic observations of five experienced online searchers, this model compares two searching styles: operationalist, which aims at optimal strategies to achieve precise retrieval and uses a large range of system capabilities, and conceptualist, which analyzes the request by seeking to fit it into a faceted structure. (13 references)…

Describes use of case study method to systematically develop model of online searching behavior in which study design is flexible, data gathering and analyses are determined by subject matter, and specific procedures are decided upon while study progresses. Problems and measures taken to reduce their effect are discussed. (Eleven references are…

This study investigated online searching behavior manifested by 39 experienced professional searchers performing their regular, job-related searches in order to uncover the rules they use for the selection of search keys, and to represent these rules in a formal model that could be used in the construction of intermediary expert systems. The case…

These three articles discuss online search key selection based on observations of professional online searchers, interviews, and analyses of the verbal and search protocols involved. The selection routine is described, the use of controlled vocabulary versus free text searching is examined, and searching styles are discussed. (44 references) (LRW)