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Consultant-2: pre- and post processing of machine learning applications.

Sleeman, D.; Rissakis, M.; Craw, S.; Graner, N.; Sharma, S.


D. Sleeman

M. Rissakis

N. Graner

S. Sharma


The knowledge acquisition bottleneck in the development of large knowledge-based applications has not yet been resolved. One approach which has been advocated is the systematic use of Machine Learning (ML) techniques. However, ML technology poses difficulties to domain experts and knowledge engineers who are not familiar with it. This paper discusses Consultant-2, a system which makes a first step towards providing system support for a pre- and post-processing methodology where a cyclic process of experiments with an ML tool, its data, data description language and parameters attempts to optimize learning performance. Consultant-2 has been developed to support the use of Machine Learning Toolbox (MLT), an integrated architecture of 10 ML tools, and has evolved from a series of earlier systems. Consultant-0 and Consultant-1 had knowledge only about how to choose an ML algorithm based on the nature of the domain data. Consultant-2 is the most sophisticated. It, additionally, has knowledge about how ML experts and domain experts pre-process domain data before a run with the ML algorithm, and how they further manipulate the data and reset parameters after a run of the selected ML algorithm, to achieve a more acceptable result. How these several KBs were acquired and encoded is described. In fact, this knowledge has been acquired by interacting both with the ML algorithm developers and with domain experts who had been using the MLT toolbox on real-world tasks. A major aim of the MLT project was to enable a domain expert to use the toolbox directly; i.e. without necessarily having to involve either a ML specialist or a knowledge engineer. Consultant's principal goal was to provide specific advice to ease this process.


SLEEMAN, D., RISSAKIS, M., CRAW, S., GRANER, N. and SHARMA, S., 1995. Consultant-2: pre- and post processing of machine learning applications. International journal of human computer studies [online], 43(1), pages 43-63. Available from:

Journal Article Type Article
Acceptance Date Jul 31, 1995
Online Publication Date May 25, 2002
Publication Date Jul 31, 1995
Deposit Date Mar 22, 2007
Publicly Available Date Mar 22, 2007
Journal International journal of human-computer studies
Print ISSN 1071-5819
Electronic ISSN 1095-9300
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 43
Issue 1
Pages 43-63
Keywords Machine learning tools; Knowledge acquisition; MLT tools
Public URL


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