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Onifade, Abdurrahman Bello – Education for Information, 2023
Misinformation is a global pandemic, fueled by the sophistication of the human intellect, algorithmic systems among other factors. Enhanced by the proliferation of algorithms optimized for engagement and reactions on social media, misinformation has ignited or hampered sociopolitical participation and movements and dissuaded citizens from being…
Descriptors: Misinformation, Accuracy, Information Dissemination, Online Systems

Robertson, Alexander M.; Willett, Peter – Journal of Documentation, 1996
Describes a genetic algorithm (GA) that assigns weights to query terms in a ranked-output document retrieval system. Experiments showed the GA often found weights slightly superior to those produced by deterministic weighting (F4). Many times, however, the two methods gave the same results and sometimes the F4 results were superior, indicating…
Descriptors: Algorithms, Comparative Analysis, Information Retrieval, Online Searching
O'Neill, Edward T.; Aluri, Rao – 1980
The error-correcting algorithm described was constructed to examine subject headings in online catalog records for common errors such as omission, addition, substitution, and transposition errors, and to make needed changes. Essentially, the algorithm searches the authority file for a record whose primary key exactly matches the test key. If an…
Descriptors: Algorithms, Cataloging, Databases, Information Retrieval

Rothstein, Jerome – 1977
Addressing the problem of protecting confidential information and data stored in computer databases from access by unauthorized parties, this paper details coding schemes which present such astronomical work factors to potential code breakers that security breaches are hopeless in any practical sense. Two procedures which can be used to encode for…
Descriptors: Algorithms, Codification, Computer Programs, Confidentiality

Journal of the American Society for Information Science, 1980
Addresses the problem of systematic biases which affect the way that individuals construct and modify search queries on online retrieval systems, and suggests a searching algorithm that helps to avoid the effect of those biases. (FM)
Descriptors: Algorithms, Bias, Information Retrieval, Information Systems

Voorhees, Ellen M. – Information Processing and Management, 1986
Describes a computerized information retrieval system that uses three agglomerative hierarchic clustering algorithms--single link, complete link, and group average link--and explains their implementations. It is noted that these implementations have been used to cluster a collection of 12,000 documents. (LRW)
Descriptors: Algorithms, Cluster Analysis, Databases, Information Retrieval
Hickey, Thomas B. – 1981
Using macro and micro-structure analysis of large files of personal author names, this study developed retrieval techniques and algorithms to automatically correct and/or flag typographical errors in names, identify names in a database that are similar to a name entered by a user during a search, and measure similarities between names. It was…
Descriptors: Algorithms, Authors, Bibliographies, Computational Linguistics

Egghe, L. – Information Processing and Management, 1988
Presents a mathematical theory that can be used to define concentration places of objects within unordered classes. The application to research on the evolution of journals and subject areas is illustrated, and an online method of calculating concentration evolution is described. (1 references) (CLB)
Descriptors: Algorithms, Bibliometrics, Classification, Databases

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

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

Vigil, Peter J. – Journal of the American Society for Information Science, 1983
Proposes algorithmic method of searching and presents experimental data testing efficacy of using Boolean negation to eliminate redundancy and reduce cognitive strain of communication barrier at human-computer interface. Cognitive information processes, concept of Boolean NOT, and problem-solving behavior are explored. Twenty-five references are…
Descriptors: Algorithms, Cognitive Processes, Comparative Analysis, Information Retrieval

Sechser, Otto – Information Processing and Management, 1982
Analyzes the formal properties, structural consequences, similarities, and differences of link indicators, brackets, and cohesion separators in the query languages employed in information retrieval. Eleven figures, a 32-item reference list, and appendices on Extended Backus Notation and the formal definition of the Formal Relevance Language are…
Descriptors: Algorithms, Indexes, Information Retrieval, Online Systems

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

Gordon, Michael D. – Information Processing and Management, 1991
Presents a theoretical rationale for employing a form of information retrieval algorithm that helps searchers better navigate through large document collections by continually revising probability estimates for document subsets. The algorithm avoids assumptions of index term independence and predicts relevance more accurately with increasing…
Descriptors: Algorithms, Feedback, Indexing, Information Needs

Yannakoudakis, E. J.; Fawthrop, D. – Information Processing and Management, 1983
This paper describes an intelligent spelling error correction system for use in a word processing environment. The system employs a dictionary of 93,769 words and, provided the intended word is in the dictionary, it identifies 80 percent to 90 percent of spelling and typing errors. Nine references are cited. (Author/EJS)
Descriptors: Algorithms, Artificial Intelligence, Computer Programs, Dictionaries
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