| Summary: | 碩士 === 國立交通大學 === 工業工程與管理學系 === 99 === Four inequality measurements for analyzing the Flower Price Distribution (FPD) in Taiwan have been compared: Lorenz curve, Gini coefficient, Theil index, and Sen’s measure of inequality. The Lorenz curve method offers a graphic representation for showing a holistic feature of FPD. In contrast, Gini coefficient, Theil index, and Sen’s measure of inequality methods are numerical representations. In this comparison, the Theil index approach obviously shows an inherent advantage over the other three methods from a data warehouse viewpoint. In other words, the data of flower prices in Taiwan are fetched from a data warehouse based on dimensional model. The data retrieving process needs to drill down or roll up in the dimensional model. The Theil index with a unique decomposability property shows a consistent way for representing the inequalities among different levels. According to this mathematical property, a geographic information system with Theil index feature has been implemented.
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