This review of the published literature on dental materials during 1988 has been compiled by the members of the Dental Materials Panel of the United Kingdom. The editor would like to extend his grateful thanks to all the contributors who continue year after year to provide their views and critical assessment of what in their opinion have been the main contributions to their area of research. Th...

Learning by induction can require a large number of training examples. We show the power of using a simulator to generate training data and test data in learning rules for an expert system. The induction program is RL, a simplified version of Meta-DENDRAL. The expert system is ABLE, a rule-based system that identifies and locates errors in particle beam lines used in high energy physics. A simu...

population. In addition, no essay attempts to define the elderly. Are clients in their 60s similar to others in their 80s and 90s? One is left with little regard for the life cycle as a viable force past adulthood. Several of the cases presented raise interesting issues but, again, do not place them within a meaningful context. One exception in Part II is an essay by Lawrence Breslau on the Exa...