This workshop focused on evaluation, broadly defined to include empirical evaluations of alternative components in CBR systems, empirical comparisons involving CBR systems, formal comparisons with other approaches, and discussions on feedback from users of relevant fielded systems. Although several previous workshops on case-based reasoning have been sponsored by the Advanced Research Projects Agency, AAAI (both in workshops and symposiums), and the European CBR community, this is the first one that focused primarily on evaluation. Our motivation for holding this workshop was arose from the observation that the case-based reasoning community had attained a critical level of maturity. Previous CBR workshops encouraged discussions on fundamental issues and theoretical proposals of new CBR approaches, but did not emphasize their evaluation. This workshop specifically encouraged contributions that described such evaluations. We believe a balanced approach encouraging both innovative proposals and evaluations of existing approaches will better serve the CBR community than can either alone.