| 基于机会项空间分布的机会集多样性评价研究 |
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| 引用本文： | 石森昌. 基于机会项空间分布的机会集多样性评价研究[J]. 电子科技大学学报(社会科学版), 2014, 0(2): 39-42,70 |
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| 作者姓名： | 石森昌 |
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| 作者单位： | 天津大学,天津300072 |
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| 摘 要： | 在机会集多样性评价中，基于机会项的空间分布状况建立评价模型是一类重要方法。与机会集多样性水平仅由机会项空间分布的范围大小决定的观点不同，提出了机会集多样性水平由机会项空间分布的范围大小和均匀状况共同决定。以机会项间距离的最大值代表机会项分布的范围大小，以机会项间距离序列的基尼系数代表机会项分布的均匀水平，并给出了基于两者构建的机会集多样性评价规则。
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| 关 键 词： | 机会集 选择自由 多样性 评价 距离 |
Appraising Diversity of Opportunity Set Based on Distribution of Opportunities in Characteristic Space |
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| SHI Sen-chang. Appraising Diversity of Opportunity Set Based on Distribution of Opportunities in Characteristic Space[J]. Journal of University of Electronic Science and Technology of China(Social Sciences Edition), 2014, 0(2): 39-42,70 |
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| Authors: | SHI Sen-chang |
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| Affiliation: | SHI Sen-chang (TianjinUniversity Tianjin 300072 China) |
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| Abstract: | Some diversity appraisal models of opportunity set are based on distribution of alternatives in the set. Different with views that diversity of opportunity set is determined only by rang size of the distribution, the article presented diversity of opportunity set is determined by range size and uniform condition of the distribution. The maximum distance between the alternatives represented the range of the distribution. The Gini coefficient of the distance series represented the uniform condition of the distribution. Two appraisal rules of diversity of opportunity set are presented based on the maximum distance and the Gini coefficient. |
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| Keywords: | opportunity set freedom of choice diversity appraisal distance |
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