• Title/Summary/Keyword: Outlier cleaner

Search Result 2, Processing Time 0.017 seconds

On the Efficiency of Outlier Cleaners in Spatial Data Analysis (공간통계분석에서 이상점 수정방법의 효율성비교)

  • 이진희;신기일
    • The Korean Journal of Applied Statistics
    • /
    • v.17 no.2
    • /
    • pp.327-336
    • /
    • 2004
  • Many researchers have used the robust variogram to reduce the effect of outliers in spatial data analysis. Recently it is known that estimating the variogram after replacing outliers is more efficient. In this paper, we suggest a new data cleaner for geostatistic data analysis and compare the efficiency of outlier cleaners.

Space Time Data Analysis for Greenhouse Whitefly (온실가루이의 공간시계열 분석)

  • 박진모;신기일
    • The Korean Journal of Applied Statistics
    • /
    • v.17 no.3
    • /
    • pp.403-418
    • /
    • 2004
  • Recently space-time model in spatial data analysis is widly used. In this paper we applied this model to analysis of greenhouse whitefly. For handling time component, we used ARMA model and autoregressive error model and for outliers, we adapted Mugglestone's method. We compared space-time models and geostatistic model with MSE and MAPE.