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Niemi, Timo; Jarvelin, Kalervo – Information Processing and Management, 1992
Discusses deductive databases and database management systems (DBMS) and introduces a framework for advanced query formulation for end users. Recursive processing is described, a sample extensional database is presented, query types are explained, and criteria for advanced query formulation from the end user's viewpoint are examined. (31…
Descriptors: Criteria, Database Management Systems, Databases, Information Retrieval

Burkowski, Forbes J. – Information Processing and Management, 1992
Describes a hierarchical text database model and defines an algebra based on concordance lists. The algebra is presented as a theoretical model to define both a conceptual schema for the database and search protocols for database implementation. Several retrieval examples are included. (19 references) (MES)
Descriptors: Algebra, Database Design, Full Text Databases, Information Retrieval

Craven, Timothy C. – Information Processing and Management, 1991
Discussion of graph-drawing algorithms compares and evaluates five algorithms for generated automatic graphic display of sentence dependency structures that have been implemented in the TEXTNET text structure management system. Evaluation criteria are discussed, and a test of the algorithms with a database of newspaper articles is described. (16…
Descriptors: Algorithms, Comparative Analysis, Database Management Systems, Databases

Whitney, Gretchen – Information Processing and Management, 1991
The records in "Population Bibliography," a database developed by the Library of the Carolina Population Center at the University of North Carolina at Chapel Hill, were analyzed to determine the degree to which library policies and practices affected its international development, and to assess the degree to which the database…
Descriptors: Bibliographic Databases, Database Design, Financial Support, International Studies

Simmons, Robert F. – Information Processing and Management, 1987
Describes a prototype natural language text knowledge system (TKS) that was used to organize 50 pages of a handbook on artificial intelligence as an inferential knowledge base with natural language query and command capabilities. Representation of text, database navigation, query systems, discourse structuring, and future research needs are…
Descriptors: Database Management Systems, Databases, Discourse Analysis, Expert Systems

Savoy, Jacques – Information Processing and Management, 1994
Proposes a new learning algorithm to improve the retrieval effectiveness of the search system used in the hypertext environment using an extended Boolean model with links to improve the ranking of retrieved items. Highlights include the basic retrieval scheme, the learning scheme, and a review of basic probabilistic retrieval models. (Contains 32…
Descriptors: Algorithms, Database Design, Databases, Hypermedia

Fox, Edward A.; Koll, Matthew B. – Information Processing and Management, 1988
Provides an overview of methods for improving the effectiveness of Boolean retrieval systems, including document clustering, relevance feedback, weighted term searching, ranked output, and fuzzy set theory. The discussion of experimental studies with the SMART and SIRE systems focuses on the implementation and results of these methods. (69…
Descriptors: Bibliographic Databases, Comparative Analysis, Feedback, Full Text Databases

Stemple, D. W.; And Others – Information Processing and Management, 1986
Presents a database system development model in which theoretical support in the form of automated theorem proving is brought to bear on the problem of enforcing integrity, i.e., ensuring that the database system represents only those states and transitions that are possible in the world it models. (MBR)
Descriptors: Databases, Flow Charts, Models, Programing

Krejci, Frantisek – Information Processing and Management, 1986
HIT methodology for conceptual data structure design is briefly described and exemplified. Main features of the methodology are the natural formalism of the description of conceptual schema, and an easy-to-understand graphical way of communication between both the designer and individual experts substituting future users. (Author/MBR)
Descriptors: Database Management Systems, Design Requirements, Diagrams, Models

Goyal, P. – Information Processing and Management, 1983
Tests performed on 6,260 titles from 3 machine-readable British National Bibliography files using an entropy based technique for abbreviation of text strings for use as a control code found that more than 94 percent of the titles generated a unique seven character code. Six references and an illustrative example are appended. (EJS)
Descriptors: Abbreviations, Databases, Information Retrieval, Online Systems

Tavakoli, Nassrin; Ray, Alan – Information Processing and Management, 1992
Describes techniques used for information retrieval from free-text or document databases and presents a new approach based on signature files, or representations of documents, called the Map Array Signature (MAS) method. False drops are discussed, and results of experiments are compared to Robert's Superimposed Coding method. (20 references) (LRW)
Descriptors: Documentation, Full Text Databases, Information Retrieval, Research Needs

Shen, Sheldon – Information Processing and Management, 1988
Describes a model for a front end query processor to deal with incomplete information in a database. The effectiveness of the processor in restricting the number of objects to be processed in a query and in aiding the interpretation of a query is discussed. (26 references) (Author/CLB)
Descriptors: Algorithms, Computational Linguistics, Databases, Mathematical Formulas

Burton, Hilary D. – Information Processing and Management, 1988
Defines and discusses bibliometrics, particularly as carried out in automated systems. The specific requirements to which data should conform to support bibliometric analysis are detailed and explained, and the Intelligent Gateway of the Lawrence Livermore National Laboratory is described. (15 references) (Author/CLB)
Descriptors: Automation, Bibliometrics, Data Analysis, Data Processing

Lamersdorf, W.; And Others – Information Processing and Management, 1986
Identifies requirements for representing structural aspects of nonconventional information system applications and demonstrates how recursive data models support information systems better than record-based database modelling tools. Structural concepts for representing office data objects are discussed and applied to an office example. Language…
Descriptors: Databases, Information Systems, Models, Programing

Ide, Nancy; And Others – Information Processing and Management, 1993
Reports on a project showing that relational data models, including unnormalized models that allow the nesting of relations, cannot fully capture the structural properties of lexical information. A feature-based model that allows for a full representation of some nesting and defines a factoring mechanism is described and demonstrated. (38…
Descriptors: Computational Linguistics, Database Management Systems, Dictionaries, Lexicography