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Mo, Yuji – ProQuest LLC, 2022
The research in this dissertation consists of two parts: An active learning algorithm for hierarchical labels and an embedding-based retrieval algorithm. In the first part, we present a new approach for learning hierarchically decomposable concepts. The approach learns a high-level classifier (e.g., location vs. non-location) by separately…
Descriptors: Active Learning, Algorithms, Classification, Models
Peer reviewed Peer reviewed
Morato, Jorge; Llorens, J.; Genova, G.; Moreiro, J. A. – Information Processing & Management, 2003
Discusses the inclusion of contextual information in indexing and retrieval systems to improve results and the ability to carry out text analysis by means of linguistic knowledge. Presents research that investigated whether discourse variables have an impact on information and retrieval and classification algorithms. (Author/LRW)
Descriptors: Algorithms, Classification, Indexing, Information Retrieval
Peer reviewed Peer reviewed
Steinacker, Ivo – Journal of the American Society for Information Science, 1974
An algorithm is proposed to solve the problem of sequential indexing which does not use any grammatical or semantic analysis, but follows the principle of emulating human judgement by evaluation of machine-recognizable attributes of structured word assemblies. (Author)
Descriptors: Algorithms, Automatic Indexing, Databases, Indexing
Peer reviewed Peer reviewed
Savoy, Jacques; Picard, Justin – Information Processing & Management, 2001
Discusses the role of search engines in Web usability and analyzes and evaluates the retrieval effectiveness of various indexing and searching strategies on a new Web text collection. Highlights include preprocessing techniques that might improve retrieval effectiveness; and hyperlinks as useful sources of evidence in improving retrieval…
Descriptors: Algorithms, Indexing, Information Retrieval, Search Strategies
Peer reviewed Peer reviewed
Bartell, Brian T.; And Others – Journal of the American Society for Information Science, 1995
Discussion of the failure of individual keywords to identify conceptual content of documents in retrieval systems highlights Metric Similarity Modeling, a method for creating vector space representation of documents based on modeling target interdocument similarity values. Semantic relatedness, latent semantic indexing, an indexing and retrieval…
Descriptors: Algorithms, Databases, Documentation, Indexing
Peer reviewed Peer reviewed
Burgin, Robert – Journal of the American Society for Information Science, 1995
Examines the retrieval effectiveness of five hierarchical clustering methods (single link, complete link, group average, Ward's method, and weighted average) as a function of indexing exhaustivity with four test collections. Evaluations of retrieval effectiveness are based on three measures of optimal retrieval performance. (Author/LRW)
Descriptors: Algorithms, Evaluation Methods, Indexing, Information Retrieval
Peer reviewed Peer reviewed
Chien, Lee-Feng – Information Processing & Management, 1999
Considers the need for keyphrase-extraction techniques in intelligent Chinese information retrieval and presents a PAT-tree-based adaptive approach, developed from the PATRICIA Algorithm (Practical Algorithm to Retrieve Information Coded in Alphanumeric). Discusses Internet utilization, automatic term suggestion, domain-specific lexicon…
Descriptors: Algorithms, Chinese, Dictionaries, Indexing
Peer reviewed Peer reviewed
Rousseau, Ronald – Information Processing and Management, 1985
Presents a modification function for weights of descriptors for documents in fuzzy retrieval systems which includes some desirable properties that are lacking in the model proposed by Choros and Danilowicz in their study on relative indexing. (MBR)
Descriptors: Algorithms, Indexing, Information Retrieval, Online Systems
Peer reviewed Peer reviewed
Rada, Roy; Bicknell, Ellen – Journal of the American Society for Information Science, 1989
Describes exploratory experiments in evaluating and improving a thesaurus through studying its effect on retrieval. A formula was developed to measure the conceptual distance between queries and documents encoded as sets of thesaurus terms. Comparison to the performance of people judging conceptual distance shows that the formula accurately…
Descriptors: Algorithms, Computer Simulation, Evaluation Methods, Indexing
Peer reviewed Peer reviewed
Danilowicz, Czeslaw – Information Processing and Management, 1983
Presents principles for determining profile of a system user based on analysis of co-occurrence of index terms in queries and pertinent documents. A procedure for determining index term weights, the information value of which depends on the degree of homogeneity of system users, is introduced. Three references are cited. (EJS)
Descriptors: Algorithms, Indexing, Information Retrieval, Information Systems
Peer reviewed Peer reviewed
Frei, H. P.; Stieger, D. – Information Processing & Management, 1995
Highlights semantic links and shows how the semantic content of hypertext links can be used for information retrieval. Discussion includes indexing and retrieval algorithms that exploit link content and node content; retrieval strategies exploiting semantic links, including conventional retrieval and constrained spreading activation techniques;…
Descriptors: Algorithms, Experiments, Graphs, Hypermedia
Litofsky, Barry – 1969
Large-scale, on-line information storage and retrieval systems pose numerous problems above those encountered by smaller systems. A step toward the solution of these problems is presented along with several demonstrations of feasibility and advantages. The methodology on which this solution is based is that of a posteriori automatic classification…
Descriptors: Algorithms, Automation, Classification, Evaluation
Peer reviewed Peer reviewed
Kropp, D.; Walch, G. – Information Processing and Management, 1981
Describes an indexing technique based on overlapping word fragments as reference strings that are linked in a directed graph structure which makes possible exact match-, partial match-, and masked-partial match-retrieval and indicates search strategies for each case. Eight figures, two tables, and nine references are provided. (RBF)
Descriptors: Algorithms, Computer Programs, Coordinate Indexes, Indexing
Peer reviewed Peer reviewed
Jones, Susan; And Others – Journal of the American Society for Information Science, 1995
Discusses the feasibility of building intelligent rule- or weight-based algorithms into general-purpose software for interactive thesaurus navigation. Previous research is surveyed; practical investigations in thesaurus navigation and query enhancement are described; and implications for automatic or intelligent thesaurus navigation are…
Descriptors: Algorithms, Computer Software, Indexing, Information Retrieval
Peer reviewed Peer reviewed
Cohen, Sara; Kanza, Yaron; Kogan, Yakov; Sagiv, Yehoshua; Nutt, Werner; Serebrenik, Alexander – Journal of the American Society for Information Science and Technology, 2002
Describes EquiX, a search language for XML that combines querying with searching to query the data and the meta-data content of Web pages. Topics include search engines; a data model for XML documents; search query syntax; search query semantics; an algorithm for evaluating a query on a document; and indexing EquiX queries. (LRW)
Descriptors: Algorithms, Evaluation Methods, Indexing, Information Retrieval
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