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      데이터 분석에 기반한 무응답 모형의 선택방법 = A model selection method for non-respose model based on empirical data analsys

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      https://www.riss.kr/link?id=T13546827

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      다국어 초록 (Multilingual Abstract)

      Many research agencies predict the result of election using various methods before election. Basic purpose of survey is to forecast the election result. One of the major problems to forecast election, especially based on survey, is non-response. We may have different forecasting results depend on method of non-response imputation. In this research, we consider a model based method of non-response imputation. An assumption of the non-response mechanism is very important precondition to forecast the accurate results. In this research, we compared the accuracy of prediction and assumption of non-response data by result of presidential election exit poll. We consider maximum likelihood estimation based on EM algorithm to handle assumption of the model of non-response data. We also consider modified within precinct error which Bautista(2007) proposed to compare the predict result.
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      Many research agencies predict the result of election using various methods before election. Basic purpose of survey is to forecast the election result. One of the major problems to forecast election, especially based on survey, is non-response. We ma...

      Many research agencies predict the result of election using various methods before election. Basic purpose of survey is to forecast the election result. One of the major problems to forecast election, especially based on survey, is non-response. We may have different forecasting results depend on method of non-response imputation. In this research, we consider a model based method of non-response imputation. An assumption of the non-response mechanism is very important precondition to forecast the accurate results. In this research, we compared the accuracy of prediction and assumption of non-response data by result of presidential election exit poll. We consider maximum likelihood estimation based on EM algorithm to handle assumption of the model of non-response data. We also consider modified within precinct error which Bautista(2007) proposed to compare the predict result.

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      목차 (Table of Contents)

      • I. 서론 1
      • II. 무응답 모형의 추정방법 및 평가방법 5
      • 1. 무응답 모형 5
      • 2. EM 알고리즘 7
      • I. 서론 1
      • II. 무응답 모형의 추정방법 및 평가방법 5
      • 1. 무응답 모형 5
      • 2. EM 알고리즘 7
      • 3. MWPE (modified within precinct error) 8
      • III. 자료분석 12
      • IV. 결론 21
      • 참고문헌 22
      • 영문초록 25
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