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…

Describes access and retrieval techniques implemented as part of a research and development program in electronic imaging applied to document storage and retrieval at the National Library of Medicine. Design considerations for large image databases are discussed. (six references) (EAM)

Discusses developments in document management systems based on a survey of over 400 corporations and government agencies. Text retrieval and imaging markets, architecture and integration, purchasing plans, and vendor market leaders are covered. Five graphs present data on user preferences for improvements. A sidebar article reviews the development…

Discusses a pilot project by the Nuclear Regulatory Commission to apply optical disk technology to the storage and retrieval of documents related to its high level waste management program. Components and features of the microcomputer-based system which provides full-text and image access to documents are described. A sample search is included.…

University Microfilms International (UMI) collects, creates, and preserves information from the fields of business, education, engineering, social science, and the popular media and makes it available in print and microform, as well as online, on CD-ROM, and on magnetic tape. The company also develops integrated information delivery systems. (KRN)

Describes an approximate document ranking process that uses a compact array of in-memory, low-precision approximations for document length. Combined with another rule for reducing the memory required by partial similarity accumulators, the approximation heuristic allows the ranking of large document collections using less than one byte of memory…

The University of Akron (OH), through its affiliation with OhioLINK, has implemented University Microfilms International's (UMI) PowerPages, a full-text electronic document delivery tool, throughout its library system. This article describes OhioLINK, PowerPages, and the University of Akron's experience with the service. Discusses the benefits and…

The European Patent Office (EPO) has recently implemented the last part of its ambitious automation project aimed at creating an automated search environment for approximately 1200 EPO patent search examiners. The examiners now have at their disposal an integrated set of tools offering a full range of functionalities from online searching, via…

Describes the Victorian Women Writers Project, a full-text poetry database created and published on the World Wide Web by Indiana University Libraries. Electronic formats such as graphical, character-based, and proprietary files are discussed, along with standards for formatting, including ASCII, HTML, and Text Encoding Initiatives. Decisions must…

This report provides a brief history of the design and development process that the Syracuse University Kellogg Project followed in creating the Kellogg Library and Archive Retrieval System (KLARS), an information storage and retrieval system designed to computerize archival research. This system was developed to preserve, organize, and facilitate…

This paper discusses the indexing, collection, and maintenance processes, as well as the retrieval interface, to public digital libraries. The paper begins by briefly surveying both Internet technical report collections and World Wide Web search engines. It goes on to describe a prototype digital library, the New Zealand Digital Library for…