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Automatic NEPHIS Coding of Descriptive Titles for Permuted Index Generation.
Peer reviewed Peer reviewed
Craven, Timothy C. – Journal of the American Society for Information Science, 1982
Describes a system for the automatic coding of most descriptive titles which generates Nested Phrase Indexing System (NEPHIS) input strings of sufficient quality for permuted index production. A series of examples and an 11-item reference list accompany the text. (JL)
Descriptors: Algorithms, Automatic Indexing, Permuted Indexes
A Preserved Context Indexing System for Microcomputers: PERMDEX.
Peer reviewed Peer reviewed
Yerkey, A. Neil – Information Processing and Management, 1983
Following a discussion of derivative versus assignment indexing, use of roles, and concept behind Preserved Concept Indexing System, features of PERMDEX (microcomputer program to assist in creation of permuted printed index) are described including indexer input and prompts, the shunting algorithm, and sorting and printing routines. Fourteen…
Descriptors: Algorithms, Automatic Indexing, Computer Programs, Microcomputers
Processing Truncated Terms in Document Retrieval Systems.
Peer reviewed Peer reviewed
Bratley, Paul; Choueka, Yaacov – Information Processing and Management, 1982
Presents uniform and efficient approach for processing all truncated query terms in information retrieval which requires one disk access to obtain from the permuted dictionary all strings represented by truncated term. The problem of the overhead storage required to implement the permuted dictionary is discussed. Fifteen references are provided.…
Descriptors: Algorithms, Information Retrieval, Information Storage, Information Systems
The Privilege of Ranking: Google Plays Ball.
Wiggins, Richard – Searcher, 2003
Discussion of ranking systems used in various settings, including college football and academic admissions, focuses on the Google search engine. Explains the PageRank mathematical formula that scores Web pages by connecting the number of links; limitations, including authenticity and accuracy of ranked Web pages; relevancy; adjusting algorithms;…
Descriptors: Algorithms, Indexes, Mathematical Formulas, Relevance (Information Retrieval)
Hierarchies of Indices for Text Searching.
Peer reviewed Peer reviewed
Baeza-Yates, Ricardo; And Others – Information Systems, 1996
Discusses indexes for text databases and presents an efficient implementation of an index for text searching called PAT array, or suffix array, where the database is stored on secondary storage devices such as magnetic or optical disks. Additional hierarchical index structures and searching algorithms are proposed that improve searching time, and…
Descriptors: Algorithms, Full Text Databases, Indexes, Information Storage
Generating Hierarchical Document Indices from Common Denominators in Large Document Collections.
Peer reviewed Peer reviewed
O'Kane, Kevin C. – Information Processing & Management, 1996
Describes an algorithm for computer generation of hierarchical indexes for document collections. The resulting index, when presented with a graphical interface, provides users with a view of a document collection that permits general browsing and informal search activities via an access method that requires no keyboard entry or prior knowledge of…
Descriptors: Access to Information, Algorithms, Automatic Indexing, Computer Graphics
Knowledge-Based Multimedia Information Retrieval in Hyperspace.
Peer reviewed Peer reviewed
Chen, Ping-Wen; Chang, Shi-Kuo – Telematics and Informatics, 1997
Presents a World Wide Web page model that reacts to pre-defined events and performs actions like "prefetching" automatically. Discusses the active index, conceptual page model; design of the client system, status of the current implementation, prefetching algorithm, an experiment of the algorithm, experimental results of the active index…
Descriptors: Algorithms, Computer Interfaces, Computer Software Development, Expert Systems