Information Retrieval Systems Characteristics, Testing, and Evaluation

The basis activities of information retrieval; Subject indexing, index terms, and controlled vocabularies; Search files and searching mechanisms; The current awareness function; Performance criteria for information retrieval systems; Factors affecting the performance of an information retrival system; Index language, their components and characteristics; Toward completely mechanized information systems; Evaluating the operating efficiency of an information retreival system; Analysis of the test data.