This paper focuses on techniques for retrieval used in information sciences and in World Wide Web search engines. The purpose of reference service and information science is to provide useful information in response to a query. The two metrics of recall and precision serve to express information retrieval performance. There are two major…

The vice president of a computerized information center discusses her career history, the development of information services and the database industry, current information technologies and the role of artificial intelligence, characteristics of indexers and abstractors employed, the kind of training needed by abstractors and indexers, and…