Computer vision offers a variety of techniques for searching for pictures in large collections of images. Appearance methods compare images based on the overall content of the image using certain criteria. Finding methods concentrate on matching subparts of images, defined in a variety of ways, in hope of finding particular objects. These ideas…

Compares traditional cataloging to Web-based. Discusses intellectual-access issues as they apply to reference services today, and outlines deficiencies in traditional cataloging, and corresponding attributes of Web-based intellectual access. Notes ways that catalogers and public-service librarians can address these issues. (Author/AEF)

Presents a classification scheme for generations of online catalogs; discusses current online technologies and identifies deficiencies; and discusses enhancements that will take online catalogs into the next generation. Such enhancements will include increased access to information through user-system dialogue, automatic search aids, subject…