Substantial alterations to a system often have little or no effect on particular collections. This may be due to poor separation of relevant and non-relevant documents. The paper presents a procedure for characterizing this separation, which can show whether proposed modifications of the base system are likely to be useful. (8 references)…

Retrieval performance with automatic term classifications for three test collections has been variable. This paper attempts to discover why. The real difference between the collections is in the separation of relevant from non-relevant documents. The separation is so poor that classification cannot be expected to succeed. (14 references)…

Cooperative efforts between Fort Detrick and various organizations over the past eight years and the consequences of these efforts are discussed. (26 references) (Authors)

Applying to air quality data, procedures are presented for site characterization, method identification, data validation, and data summarization that are being established by the Environmental Protection Agency for the National Aerometric Data Bank. Topics review screening criteria, atypical results (data outliers), data accuracy and precision,…

The Technical Information Service of the National Research Council of Canada and several other information retrieval activities in Ottawa and elsewhere are components of a nation-wide network which is developing into a coherent Canadian Scientific and Technological Information Dissemination System. (21 references) (Author/NH)

The complex and time-consuming task of preparing an acronym directory with fully documented entries for the library, information, and computer science fields was appropriately aided by methodology of these fields. The input record is constantly available for searching despite dispersal of the component 3 X 5 card records. (1 reference) (Author/NH)

The experiences, costs, price policy, market, sales promotion and foreign cooperation of a Danish documentation department are described in relation to two data bases. (Author/MM)

The focus of the Library Education Experimental Project (LEEP) at Syracuse University has been the development of a computer based laboratory for library science students to use in class assignments and for independent projects, with MARC tapes forming the data base. Data bases, programs, and seven different class assignments are described and…

Progress report on the Manitoba Education Information Access (MEDIA) project, a computerized educational information system. (DE)

Describes an archive tape processing system which processes tapes received through OCLC-MARC subscription services to construct and maintain a master database of bibliographic records for libraries of each participating institution of the Triangle Research Libraries Network: Duke University; North Carolina State University, Raleigh; and University…

Query forms used in library information systems are expressed in a generalized notation. Three relations, the FIELD, the inverse FIELD and the RECORD, are defined to express file access operations in known-item and subject searches, browsing, clustering operations, and truncation and word proximity searching. Eighteen references are cited. (EJS)

Reports results of survey of United States online database producers designed to determine number of personnel employed in intellectual production of databases and provide basis for generation of people employed in frequently recurring staff categories. Implications for education based on needs suggested by staffing patterns are examined.…