NotesFAQContact Us
Collection
Advanced
Search Tips
Showing all 5 results Save | Export
Peer reviewed Peer reviewed
Bookstein, A.; Klein, S. T. – Information Processing and Management, 1990
Describes the theoretical framework of a retrieval system that uses data structures called bitmaps to improve search algorithms for medium-sized systems. Information retrieval systems that contain the full text of the documents are discussed, and the use of inverted files such as concordances for small texts is explained. (24 references) (LRW)
Descriptors: Algorithms, Data Processing, Full Text Databases, Indexes
Peer reviewed Peer reviewed
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
Peer reviewed Peer reviewed
Bookstein, Abraham; And Others – Information Processing and Management, 1992
Discusses the problems of compressing a large textual database for storage on CD-ROM. A text-compression algorithm is presented, new algorithms for compression of indices are described, and the ARTFL (American and French Research on the Treasury of the French Language) database is used as an example. (14 references) (LRW)
Descriptors: Algorithms, Coding, Full Text Databases, Indexes
Peer reviewed Peer reviewed
Craven, Timothy C. – Information Processing and Management, 1980
Proposes a single underlying structure for the production of a variety of computer index displays, using a networking system which represents both concepts and links by nodes. Desirable characteristics of index displays are outlined, and algorithmic extraction of subnetworks for local use is discussed. References are included. (Author/BK)
Descriptors: Algorithms, Automatic Indexing, Computer Graphics, Databases
Peer reviewed Peer reviewed
Mazur, Zygmunt – Information Processing and Management, 1979
Examines through a series of mathematical models (theorems, descriptions, and examples), properties and operations on inverted files, which are used in an information retrieval system based on thesaurus with weighted descriptors. (CWM)
Descriptors: Algorithms, Indexes, Information Processing, Information Retrieval