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Cartright, Marc-Allen – ProQuest LLC, 2013
The use of information retrieval (IR) systems is evolving towards larger, more complicated queries. Both the IR industrial and research communities have generated significant evidence indicating that in order to continue improving retrieval effectiveness, increases in retrieval model complexity may be unavoidable. From an operational perspective,…
Descriptors: Information Retrieval, Search Strategies, Information Systems, Efficiency
Guajardo, Richard; Brett, Kelsey; Young, Frederick – Journal of Electronic Resources Librarianship, 2017
For the past several years academic libraries have been adopting discovery systems to provide a search experience that reflects user expectations and improves access to electronic resources. University of Houston Libraries has kept pace with this evolving trend by pursuing various discovery options; these include an open-source tool, a federated…
Descriptors: Academic Libraries, Case Studies, Electronic Libraries, Electronic Publishing
Bartol, Tomaz – Program: Electronic Library and Information Systems, 2012
Purpose: The paper aims to assess the utility of non-agriculture-specific information systems, databases, and respective controlled vocabularies (thesauri) in organising and retrieving agricultural information. The purpose is to identify thesaurus-linked tree structures, controlled subject headings/terms (heading words, descriptors), and principal…
Descriptors: Syntax, Information Systems, Reference Materials, Databases
Daines, J. Gordon, III; Nimer, Cory L. – Journal of Archival Organization, 2011
This article examines how finding aids are structured and delivered, considering alternative approaches. It suggests that single-level displays, those that present a single component of a multilevel description to users at a time, have the potential to transform the delivery and display of collection information while improving the user…
Descriptors: Internet, Search Strategies, Archives, Information Retrieval
Tsao, Nai-Lung; Kuo, Chin-Hwa; Wible, David; Hung, Tsung-Fu – Educational Technology & Society, 2009
In this paper, we propose a syntax-based text retrieval system for on-line language learning and use a fast regular expression search engine as its main component. Regular expression searches provide more scalable querying and search results than keyword-based searches. However, without a well-designed index scheme, the execution time of regular…
Descriptors: Syntax, Search Engines, Information Retrieval, Mathematics
Yuan, Xiaojun; Zhang, Xiangman; Chen, Chaomei; Avery, Joshua M. – Information Research: An International Electronic Journal, 2011
Introduction: This study investigated the effect of cognitive styles on users' information-seeking task performance using a knowledge domain information visualization system called CiteSpace. Method: Sixteen graduate students participated in a user experiment. Each completed an extended cognitive style analysis wholistic-analytic test (the…
Descriptors: Graduate Students, Cognitive Style, Cognitive Tests, Visualization
Bak, Peter; Meyer, Joachim – Behaviour & Information Technology, 2011
Information systems increasingly provide options for visually inspecting data during the process of information discovery and exploration. Little research has dealt so far with user interactions with these systems, and specifically with the effects of characteristics of the displayed data and the user on performance with such systems. The study…
Descriptors: Foreign Countries, Graphs, Criteria, Information Retrieval

Butterly, Elizabeth – Information Processing and Management, 1975
Reports on an evaluation of the construction of selective dissemination of information profiles for the International Nuclear Information System (INIS) in South Africa. (PF)
Descriptors: Information Retrieval, Information Systems, Relevance (Information Retrieval), Search Strategies

Robertson, S. E.; Belkin, N. J. – Journal of Documentation, 1978
Explores the possibility of combining the two principles of ranking according to degree of relevance, and ranking according to probability of relevance, for information retrieval systems, but concludes that, while neither is adequate alone, no single, all-embracing ranking principle can be constructed to replace the two. (Author/VT)
Descriptors: Information Retrieval, Information Systems, Relevance (Information Retrieval), Search Strategies

Cleverdon, Cyril W. – Journal of Documentation, 1972
The inverse relationship of recall and precision is not a fundamental law. It must not be used as an excuse for failing to bring about any overall improvement in the performance of information retrieval systems (12 references) (Author/NH)
Descriptors: Information Retrieval, Information Systems, Relevance (Information Retrieval), Search Strategies
Scheffler, F. L.; March, J. F. – 1972
The ability of various Aerospace Materials Information Center (AMIC) information specialists to prepare search strategies for document retrieval was studied by providing ten typical search request statements to seven information specialists. Each specialist prepared search strategies independently. Significant variations occurred among the…
Descriptors: Information Retrieval, Information Scientists, Information Systems, Relevance (Information Retrieval)

O'Connor, John – Journal of the American Society for Information Science, 1973
An "answer-passage" is a passage which is either answer-providing or "answer indicative." New text searching techniques for the retrieval of answer-passages are discussed. Appendices listing thesauri, glossaries and dictionaries, syntactic joints, and connector words are included. (31 references) (Author/RS)
Descriptors: Computers, Databases, Information Retrieval, Information Systems

Miller, William L. – Journal of Documentation, 1971
Causes of Boolean failures to retrieve relevant MEDLARS index references are: search formulator failed to include important terms, indexer failed to include important terms, and misunderstanding of user's needs. On the evidence of this test the Probabilistic search is at least a partial solution to these problems. (8 references) (Author/NH)
Descriptors: Indexes, Information Retrieval, Information Systems, Medicine

O'Connor, John – Journal of the American Society for Information Science, 1970
Using 20 question-document pairs and the document corpus that had been searched to find them, a small-scale study was made of how effectively answer-providing documents can be retrieved by text searching. (MF)
Descriptors: Content Analysis, Information Retrieval, Information Systems, Relevance (Information Retrieval)
Chang, Yean--Hsi – 1970
A relational document retrieval system is developed that is primarily concerned with hierarchic tree structures and lateral links. The lateral linkages are relationships that cannot be represented within the tree structure representation. A number of annotated examples are given along with a detailed description of the relational data structure…
Descriptors: Databases, Information Retrieval, Information Systems, Programing Languages