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    KNOWLEDGE-BASED FIS AND ANFIS MODELS DEVELOPMENT AND COMPARISON FOR RESIDENTIAL REAL ESTATE VALUATION
    (VILNIUS GEDIMINAS TECH UNIV, 2018) Yalpir, Sukran; Ozkan, Gulgun
    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.
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    POSITIONING WITH THE HELP OF GEOGRAPHICAL INFORMATION SYSTEMS FOR ALTERNATIVE TOURISM ACTIVITIES: KONYA PROVINCE EXAMPLE
    (HEALTH & ENVIRONMENT ASSOC, 2016) Ozkan, Gulgun; Yagli, Kaan; Satilmis, R. Yoldas; Gencturk, Kursad; Yagci, Ceren
    Tourism is an important activity in our country just like it is all over the world. Konya province is famous with religious tourism. It is known that Rumi, in other words Mevlana, shows are followed by whole world. The province also used to be the capital of Anatolian Seljuk Empire so it contains many Islamic pieces of art. It owns a living history with inns, hostels, cupolas and mosques and left behind from Seljuks. In this study researches were made for alternative tourism activities so as to let our province be known for the other types of tourism activities. The suitable areas for alternative activities were aimed to be determined by geographical information systems. Natural and cultural properties of research area were determined and numerical database se was formed. By using the database and with the help of ArcGIS program, altitude, slope and exposure maps were produced. For determination of suitable areas according to alternative tourism type, national and international legislations were taken as a basis so as to determine technical and economic criteria in location selection and the limitations to be taken as a basis during application were detected. Mountain bike, ski tourism, paragliding, tableland tourism, camping - caravan tourism activities were selected. Location selection process was realized with the help of GIS, abilities to analyze and visualize positional data.