The Perseus Digital Library (PDL), under continuous development since 1987, is one of the primary digital resources for the humanities. A summary of the PDL genesis and current status is given and the multifaceted and longitudinal evaluation effort is described. A brief synthesis of results is provided and reflections on the evaluation along with…

Suggests that current conditions are nearly ideal for the effective meta-assessment of online reference services (ORS), in part because expected patterns and modes of service have not yet been established for emerging and evolving online environments, and in part because the distance between theory and practice regarding reference service in…

Suggests that in digital library services assessment, anthropology can provide the initial understanding, the intellectual basis, on which informed choices about sample population, survey design, or focus group selection can reasonably be made. Analyzes the National Gallery of the Spoken Word (NGSW). Includes brief descriptions of nine NGSW…

This review of library reference service research, which focuses on the provision of information in response to questions, covers measurement of reference service, evaluation using unobtrusive techniques, online search services, information needs and uses, the process of asking and answering questions, and artificial intelligence. Eighty-four…

Current trends in public library reference service include use of online systems; budget constraints in public sector; increased service; use, training, and supervision of paraprofessionals; centralized organization of reference service; participation in management of reference services; and more realistic attempts at measurement and evaluation of…

This study applied an analytical technique called Data Envelopment Analysis (DEA) to calculate the relative technical efficiency of 95 academic research libraries, all members of the Association of Research Libraries. DEA, with the proper model of library inputs and outputs, can reveal best practices in the peer groups, as well as the technical…

Discusses the challenges facing digital library evaluation and suggests a conceptual framework for evaluation derived from the systems approach. A review of evaluation efforts in research and practice concentrates on derivation of criteria used in evaluation. Essential requirements for evaluation are stated. Discussed are constructs, context, and…