Concept description

A generalization of the training example that is a sufficient concept description for the target concept and that satisfies the operationally criterion. 

Berry, L. G., B. Mason, and R. V. Dietrich (1983). Mineralogy Concepts, Descriptions, Determinations, 2nd ed. W. H. Freeman, San Francisco. Blander, M., H. N. Planner, K. Keil, L. S. Nelson, and N. L. Richardson (1956). The origin of chondrales experimental investigation of metastable liquids in the system Mg2Si04Si02- Geochem. Cosmochem. Acta 40 889-896. 

Figure 1.46 The structure of muscovite (mica), a sheet silicate. Reprinted, by permission, from L. G. Berry, B. Mason, and R. V. Dietrich, Mineralogy concepts, descriptions, determinations, p. 431, 2nd ed. Copyright 1983 by Freeman Publishing, Inc.

Adapted from Mineralogy Concepts, Descriptions, Determinations by Berry, Mason, and Dietrich. Copyright 1959 by W.H. Freeman and Company and Hurlbut, C. S., Jr., and Klein, C. (1977). Manual of Mineralogy, 19th ed. Copyright 1977, John Wiley Sons, Inc, Reprinted by permission of John Wiley Sons, Inc. 

Berry LG, Mason B (1959) Mineralogy Concepts, Descriptions, Determinations. Freeman, San Francisco. 630 p... 

Reinke, R. E., Michalski, R. S. (1988). Incremental learning of concept descriptions A method and experimental results. In J. E. Hayes, D. Michie, J. Richards (Eds.), Machine intelligence (Vol. 11, pp. 263-288). Oxford Clarendon Press. 

Safety concept description of all safety measures for plant components that exhibit a major hazard potential or represent potential sources of hazards (e.g., extreme operating conditions, special construction materials for corrosive media, formation of explosive mixtures, ecotoxicolgically questionable substances). The details of the basic safety concept can be drawn up later. 

DOE, 1986, "Concept Description Report - Reference Modular High Temperature Gas-Cooled Reactor Plant", DOE-HTGR-86-118, U.S. Department of Energy. 

Conclude this process by documenting flie selection. Include all of the scoring sheets, concept descriptions, and related data. This will become part of the medical device master file, and perhaps play a role in getting product approval and it will be useful when concepts need to be reconsidered later in order to make final decisions. 

For practical purposes, there are two aspects to conceptual profiling fhat need to be considered separately concept description and quantification of degree of conceptual association. 

Concept description - use of words and the issue of counter-intuitiveness... 

The LINUS system of [Lavrab and Dzeroski 94] learns relational concept descriptions, but works by first transforming the examples into propositional form, and then using propositional attribute-value learners (which may handle noisy examples). 

In terms of alternative techniques to the MSG Method, there is of course the whole literature on empirical learning, and inductive logic programming (ILP), as surveyed in Chapter 3. But it should be noted that the MSG Method only aims at the synthesis of a sub-class of concept descriptions, namely non-recursive algorithms that are implemented in terms of the =/2 primitive only, and whose intended relation, though unknown as a whole, is however known to feature a given dataflow pattern between... 

The technique of [Vere 75] is quite similar to ours in spirit, as the fundamental notion is the one of msg, and as no recursive concept descriptions are aimed at. But he only aims at conjunctive concept descriptions, whereas our technique is also able to infer disjunctive concept descriptions. Also, the MSG Method is based only on positive examples, and is only set in a first-order logic. 

Recently, work toward elaboration of the RBEC-M concept was also motivated by an exchange of scientific and technical information with the organizations in Russia and abroad, especially those involved earlier in the development and/or those developing new reactors cooled by heavy metals. In particular, the French Commissariat a I Energie Atomique (CEA) and the Japan Nuclear Cycle Development Institute (INC) should be mentioned. In 2001, the RBEC concept description in the format for the Generation IV programme was submitted to the US DOE and included in the final document on concepts of reactors cooled with liquid metals [XXm-14]. 

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