演講公告

東海大學統計學系學術演講20180508

公告時間:2018-04-25 08:59:39
公告單位:統計學系

 

 

東海大學統計學系學術演講

  間:1075 8日(星期二下午14:10~15:00

  點:管理學院新大樓M146

主講人:黃信誠        研究員(中央研究院統計科學研究所)

  題:Spatial Estimation and Inference Based on Area Aggregated Data   

Abstract

  This talk contains two parts. Firstly, we consider estimation of intensity function for a spatial point pattern based on spatially aggregated count data. A standard approach for estimating the intensity function is to use a kernel estimator. However, when data are only available in a spatially aggregated form with the numbers of events available in geographical subregions, traditional methods become infeasible. In this research, a kernel-based method is proposed to produce a smooth intensity function based on aggregated data. Secondly, we consider testing a spatial signal based on data obtained by aggregating an image into several subregions. Our method utilizes a nonparametric testing procedure called enhanced false discovery rate originally developed to detect a spatial signal from an image. Some numerical examples will be given to demonstrate the effectiveness of the proposed methods.

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