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Knowledge-based FIS and ANFIS models development and comparison for residential real estate valuation

Abstract

There has been an increasing concern on the development of alternative approaches to overcome the problems and deficiencies that occur during the application of real-estate valuation methods. This study was established to investigate the usability of the expert knowledge based fuzzy logic methodology in determining real-estates values. In addition, valuation with the Adaptive Neuro-Fuzzy Inference System (ANFIS) method provided model comparison. Samples were administered a questionnaire for the parameters planned for these models regarding the parameters that affect real estate values. To make value estimations for the Fuzzy Inference System (FIS) model by using the parameters obtained from the questionnaire analyses, the criteria that produced the best results were acquired from the various criteria alternatives. An algorithm was created and the valuation process for real estate was performed using the FIS in Konya/Turkey. As a result of poll studies the area, age, floor conditions, physical properties and location of the real-estate property were considered as the input variables and the market value as the output variable. The memberships were established with poll analysis and were rule based on expert knowledge. The model structure was formed by using the Mamdani structure in the MATLAB fuzzy toolbox. Model prediction performance was evaluated statistically with the Mean Absolute Percentage Error (MAPE) and a high accuracy of the model results to the market values indicated the reliability of the established model for residential real-estate valuation.

Keyword : residential real-estate, valuation, market value, Mamdani, model establishment, fuzzy

How to Cite
YALPIR, S., & OZKAN, G. (2018). Knowledge-based FIS and ANFIS models development and comparison for residential real estate valuation. International Journal of Strategic Property Management, 22(2), 110-118. https://doi.org/10.3846/ijspm.2018.442
  Submitted
Mar 16, 2018
Published
Mar 23, 2018
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This work is licensed under a Creative Commons Attribution 4.0 International License.

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