Learning Conceptual Design Rules: A Rough Sets Approach

  • Tomasz Arciszewski
  • Wojciech Ziarko
  • Tariq L. Khan
Conference paper
Part of the Workshops in Computing book series (WORKSHOPS COMP.)

Abstract

The paper presents the results of a feasibility study conducted in the area of learning conceptual design rules governing the selection of wind bracing components in steel skeleton structures of tall buildings. The study’s objectives were to compare decision rules produced by different learning systems using the same body of examples, and to formally verify these rules using the overall empirical error rate. The study was conducted using two learning systems, both based on the theory of rough sets: 1) System ROUGH which usually produces a large number of complex deterministic rules, 2) System DataLogic which can generate probabilistic rules, relatively simple and much fewer in number than in the case of ROUGH. All experiments were conducted using a collection of 374 examples of minimum weight (optimal) design of wind bracings in steel skeleton structures of tall buildings. The examples were prepared under identical design assumptions for a three bay skeleton structure of a tall building. They were produced using SODA, a computer software package for the analysis, design and optimization of steel structures. The paper gives a description of the learning experiments performed. It also provides a comparison of decision rules produced by DataLogic and Rough, and an analysis of empirical error rates obtained for the various collection of examples for ROUGH.

Keywords

Beach 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Arciszewski T., Bloedorn E., Michalski R.S., Wnek J., Machine Learning of Design Rules: A Case Study in the Automated Acquisition of Design Rules for Wind Bracings in Tall Buildings,The ASCE Journal of Computing in Civil Engineering,in print.Google Scholar
  2. [2]
    Mustafa M., Arciszewski T., Inductive Learning of Wind Bracing Design for Tall Buildings, Chapter, in the book Knowledge Acquisition in Civil Engineering, edited by T. Arciszewski and L. Rossman, American Society of Civil Engineers, 1992.Google Scholar
  3. [3]
    Pawlak Z., Rough Sets,International Journal of Computer and Information Sciences, Academic press Limited, Vol. 5, No. 11, 1982.Google Scholar
  4. [4]
    Weiss S.M., Kulikowski, C.A., Computer Systems that Learn: Classification and Prediction Methods from Statistics, Neural Nets, Machine Learning, and Expert Systems, Morgan Kaufman Publishers, 1991.Google Scholar
  5. [5]
    Ziarko W., Data Analysis and Case-Based Expert System Development Tool ROUGH, Proceedings of Case-Based Reasoning Workship, Pensacola Beach, Florida, 1989.Google Scholar

Copyright information

© British Computer Society 1994

Authors and Affiliations

  • Tomasz Arciszewski
    • 1
  • Wojciech Ziarko
    • 2
  • Tariq L. Khan
    • 3
  1. 1.Department of Systems EngineeringGeorge Mason UniversityFairfaxUSA
  2. 2.Department of Computer ScienceUniversity of ReginaReginaCanada
  3. 3.Department of Civil EngineeringWayne State UniversityDetroitUSA

Personalised recommendations