Addresses problem of developing machine-based information system capable of indicating one document, out of a set of documents written in natural language, which shows maximal degree of homeosemy (relationship in meaning between two texts language-fragments ) toward natural language query. Linguistic aspects, information traces, trigrams,…

Updates the comparison of the ELHILL (currently ELHILL 3, formerly ELHILL 2) and STAIRS programs as they affect on-line searching of the MEDLARS citation file. (Author)

Describes technique for automatic book indexing requiring dictionary of terms with text strings that count as instances of term and text in form suitable for processing by text formatter. Results of experimental application to portion of book text are presented, including measures of precision and recall. Ten references are noted. (EJS)

A suite of computer programs has been developed for representing the full text of lengthy documents in vector form and classifying them by a clustering method. (Author)

Strategies, heuristics, and tradeoffs involved in online searching of bibliographic citation networks are discussed using results from field of citation analysis to describe mathematical structure of citation networks. Discussion of two studies of human information seeking behavior examines the search question and interconnectivity of the…

A new method for concentrating keywords of a thesaurus, based on a mathematical study of the distribution of characters in a defined natural language. (Author/KP)

Results obtained by processing a corpus of 2675 medical titles indicate that several properties definable in terms of inclusion relationships among terms have significance for vocabulary control. (Author)

Describes an online microcomputer-based system called Reference Librarian Enhancement System (REFLES) which stores factual information. Examples of data in the system and uses of the service are presented, as well as considerations for the future. Twelve (12) references are included. (Author/BK)

Considers problem of optimal scheduling of Boolean expression (each Boolean variable represents binary outcome of program module) on single-processor system. Optimization discussed consists of finding operand arrangement that minimizes average execution costs representing consumption of resources (elapsed time, main memory, number of…

Discusses the multilevel information system (MLIS), a retrieval system that integrates functions typical for database management systems and retrieval-oriented systems and provides several levels of data accessing, each developed for a different class of users. Twenty-two sources are cited. (FM)

Describes a dialog-program which uses basic statements available on a WANG 2200T version connected to a floppy-diskette to cross-reference a given set of keywords, author names, journal names, and specified reference numbers. Special program features are described and two references are listed. (Author/RBF)

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)

Describes a technique being developed for online instruction and assistance for bibliographic database searchers called Individualized Instruction for Data Access (IIDA). The objectives of the project are discussed, as well as the use modes and flow of control of the system, and seven references are included. (Author/BK)

Reviews the special requirements of a bibliographic database, and shows how they are met in the DOBIS-LIBIS (Dortmund Library System-Leuven Library System) system. Full authority file control over the indexes to the database is discussed, and the DOBIS-LIBIS system is described in detail. References are included. (Author/BK)

Describes an interactive data retrieval system which was designed and implemented for casual users and which incorporates a user-friendly interface, aids to train beginners in use of the system, versatility in output, and error recovery protocols. A 14-item reference list and two figures illustrating system operation and output are included. (JL)