• Title/Summary/Keyword: Wavelent Transforms

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Extracting Input Features and Fuzzy Rules for forecasting KOSPI Stock Index Based on NEWFM (KOSPI 예측을 위한 NEWFM 기반의 특징입력 및 퍼지규칙 추출)

  • Lee, Sang-Hong;Lim, Joon-S.
    • Journal of Internet Computing and Services
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    • v.9 no.1
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    • pp.129-135
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    • 2008
  • This paper presents a methodology to forecast KOSPI index by extracting fuzzy rules based on the neural network with weighted fuzzy membership functions (NEWFM) and the minimized number of input features using the distributed non-overlap area measurement method. NEWFM classifies upward and downward cases of KOSPI using the recent 32 days of CPPn,m (Current Price Position of day n for n-1 to n-m days) of KOSPI. The five most important input features among CPPn,m and 38 wavelet transformed coefficients produced by the recent 32 days of CPPn,m are selected by the non-overlap area distribution measurement method. For the data sets, from 1991 to 1998, the proposed method shows that the average of forecast rate is 67.62%.

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