Knowledge Acquisition from Examples Via Multiple Models
نویسنده
چکیده
If it is to qualify as knowledge, a learner's output should be accurate, stable and com-prehensible. Learning multiple models can improve signiicantly on the accuracy and stability of single models, but at the cost of losing their comprehensibility (when they possess it, as do, for example, simple decision trees and rule sets). This paper proposes and evaluates CMM, a meta-learner that seeks to retain most of the accuracy gains of multiple model approaches, while still producing a single comprehensible model. CMM is based on reapplying the base learner to recover the frontiers implicit in the multiple model ensemble. This is done by giving the base learner a new training set, composed of a large number of examples generated and classiied according to the ensemble, plus the original examples. CMM is evaluated using C4.5RULES as the base learner, and bagging as the multiple-model methodology. On 26 benchmark datasets, CMM retains on average 60% of the accuracy gains obtained by bagging relative to a single run of C4.5RULES, while producing a rule set whose complexity is typically a small multiple (2{6) of C4.5RULES's, and also improving stability.
منابع مشابه
Factors affecting the acquisition of expert tacit knowledge Case study: Delivery time in twin pregnancy
This paper discovers the necessary variables need for creating models for tacit knowledge acquisition, especially in medical care services. The case studied here, was knowledge of diagnosing and time of delivery in twin pregnancy with nuchal translucency screening. This paper covers the empirical work undertaken on semi-structured interview based on thematic analysis. With regard of theoretical...
متن کاملA Multiple-Method Knowledge-Acquisition Shell for the Automatic Generation of Knowledge-Acquisition Tools
The use of predefined models of problem-solving methods is receiving considerable attention from researchers in the area of knowledge acquisition. Using these models, developers of knowledge-acquisition tools are able to prescribe the roles in which knowledge is used in completing a given task. A number of method-oriented architectures based on a single problem-solving method have been develope...
متن کاملAbstraction of Object-Oriented Data Models
ion of Object-Oriented Data Models Karl J. Lieberherr, Paul Bergstein, Ignacio Silva-Lepe Northeastern University, College of Computer Science Cullinane Hall, 360 Huntington Ave., Boston MA 02115 [email protected] phone: (617) 437 20 77 Abstract The contributions of this paper are two-fold: First we introduce a novel, axiomatically de ned object-oriented data model, called the ...
متن کاملThe Relation between Knowledge and Practice from Ibn Arabi and Imam Khomeini’s Viewpoints (with an Emphasis on the Differences of Acquisition Knowledge and Intuitive Knowledge)
Although the acquisition knowledge has preparing and introductory relation with regard to practice and is considered as its required condition, it lacks enough capability for definite guarantee of practice. Explicating the function of the acquisition knowledge achieved from different faculties of the soul and analyzing its position in principles and process of practice can to some extent explai...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1997