By Sandra Marcus (auth.), Sandra Marcus (eds.)
What follows is a sampler of labor in wisdom acquisition. It contains 3 technical papers and 6 visitor editorials. The technical papers provide an in-depth examine a number of the very important concerns and present methods in wisdom acquisition. The editorials have been professional duced by way of authors who have been essentially invited to pontificate. i have attempted to team and order the contributions slightly coherently. the next annotations emphasize the connections one of the separate items. Buchanan's editorial starts off at the subject of "Can desktop studying supply whatever to specialist systems?" He emphasizes the sensible targets of information acquisition and the problem of aiming for them. Lenat's editorial in brief describes event within the improvement of CYC that straddles either fields. He outlines a two-phase improvement that depends upon an engineering procedure early on and goals for a crossover to extra computerized strategies because the measurement of the information base raises. Bareiss, Porter, and Murray provide the 1st technical paper. It comes from a laboratory of laptop studying researchers who've taken an curiosity in aiding the advance of information bases, with an emphasis on how improvement adjustments with the expansion of the information base. The paper describes structures. the 1st, Protos, adjusts the educational it expects and the help it offers as its wisdom grows. the second one, KI, is a process that is helping combine wisdom into an already very huge wisdom base.
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Additional info for Knowledge Acquisition: Selected Research and Commentary: A Special Issue of Machine Learning on Knowledge Acquisition
Sample text
32 Tl9 START-lD-FINISH KNOWLEDGE BASE DEVELOPMENT ZygoteOOl J Epredecesso[ ~-,. q~,". ----'-""""=--~ SeedlingOOl Seedling PhotosynthesisOOl The context of Figure 1:1 is extended to include the developmental predecessor and successor of Embryo 001 and their methods of nutrient acquisition. Figure 14. The context extension. Through elaboration, KI concludes that the plant embryo is dying from lack of nutrients. This triggers the instantiatin of a second view defined for plants that are starving and in danger of dying.
Figure 13. The elaborated context. 32 Tl9 START-lD-FINISH KNOWLEDGE BASE DEVELOPMENT ZygoteOOl J Epredecesso[ ~-,. q~,". ----'-""""=--~ SeedlingOOl Seedling PhotosynthesisOOl The context of Figure 1:1 is extended to include the developmental predecessor and successor of Embryo 001 and their methods of nutrient acquisition. Figure 14. The context extension. Through elaboration, KI concludes that the plant embryo is dying from lack of nutrients. This triggers the instantiatin of a second view defined for plants that are starving and in danger of dying.
At least in principle, rules that encode substantive knowledge can be written in a process-independent context; experts can specify how to classify situations in the world without worrying about the mechanism by which the specifications are interpreted. However, specifying knowledge that affects the order and choice of actions involves building a computational model of a process. Consider the problem of modeling the strategy of a medical workup: the process of gathering data, assessing the results, and planning treatment for an individual patient.