Interpoint Distance Comparisons in Correspondence Analysis
研究了对应分析中基于距离模型进行对象间相似性比较的几何基础，提出了一种新的坐标缩放方法，使得可以同时比较组间和组内的平方距离。
Correspondence anal/sis is a metric technique for finding a spatial representation of data that has particular applicability to the analysis of cross tabulations (or contingency tables). The authors focus on some of the geometric underpinnings of the procedure and the kinds of statements that can be made about interobject similarity based on a distance model. In particular, a rationale is developed, along with a scaling of coordinates, that enables one to compare both between-set and within-set squared distances. This scaling differs from the conventional scaling currently used in correspondence analysis, where only one set of distances usually are compared.