STRATEGIES IN ATTAINING CONJUNCTIVE CONCEPT
نویسندگان
چکیده
منابع مشابه
Constructive Learning in Conjunctive Concept Characterization
Characterizing a set of instances is a fundamental step to acquire new concepts and has been actively investigated. The process may be very costly and the evaluation of its computational complexity is a topic which received recently a great deal of attention. On the other hand, also constructive learning in concept acquisition has been addressed and is considered relevant also to many aspects o...
متن کاملFeedback in Clinical Education: Concept, Barriers, and Strategies
Introduction: Feedback acts like a mirror in which the learner can observe the reflection of his/her performance. It is an important factor in medical education as well but one of the most neglected ones. Understanding the mechanisms and methods of feedback in clinical practice is necessary. The aim of this study is to investigate and develop the concept of feedback and factors affecting it as ...
متن کاملCompilation and Approximation of Conjunctive Queries by Concept Descriptions
In this paper, we characterize the logical correspondence between conjunctive queries and concept descriptions. We exhibit a necessary and sufficient condition for the compilation of a conjunctive query into an equivalent ALE concept description. We provide a necessary and sufficient condition for the approximation of conjunctive queries by maximally subsumed ALN concept descriptions.
متن کاملGreedy Strategies and Larger Islands of Tractability for Conjunctive Queries
Structural decomposition methods have been developed for identifying tractable classes of instances of fundamental problems in databases, such as conjunctive queries and query containment, of the constraint satisfaction problem in artificial intelligence, or more generally of the homomorphism problem over relational structures. These methods work on the hypergraph structure of problem instances...
متن کاملConcept Learning and Learning Strategies
Ab,stract—Concept learning and learning .strategies of pigeons were titanipnkited in a ntatching-to-sampie task. Groups of 4 pigeons responded either 0. 1. W. or 20 times to a sample stimulus, and then chose between a matching cotnparison stimulus and a ttonmatching comparison stimulus. Tests with unfamiliar arrangements of the three training stimuli .showed that learning n-as not hy if-then ru...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Japanese Psychological Research
سال: 1974
ISSN: 0021-5368,1468-5884
DOI: 10.4992/psycholres1954.16.132