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For square contingency tables with ordered categories, Tomizawa (1992) proposed three kinds of double symmetry models, whose each has a structure of both symmetry about the main diagonal and asymmetry about the reverse diagonal of the table. This paper proposes the extensions of those models and gives the decompo-sitions for three kinds of double symmetry… (More)

- Yusuke Saigusa, Kouji Tahata, Sadao Tomizawa
- MASA
- 2014

- Kouji Tahata, Kouji Yamamoto, Noriyuki Nagatani, Sadao Tomizawa
- 2009

For the analysis of square contingency tables, and Hata-naka (2001) considered measures to represent the degree of departure from symmetry. However, the maximum value of these measures cannot distinguish two kinds of complete asymmetry (say, complete-upper-asymmetry and complete-lower-asymmetry). The present paper proposes a measure which can distinguish… (More)

For square contingency tables with the same row and column ordinal classifications, this paper proposes the quasi-symmetry model based on the marginal ridits. The model indicates that the log-odds that an observation will fall in the (i, j) cell instead of in the (j, i) cell, i < j, is proportional to the difference between the average ridit score of row… (More)

- Kouji Tahata, Sadao Tomizawa
- Adv. Data Analysis and Classification
- 2008

• For square contingency tables with ordered categories, Agresti (1984, 2002) considered the marginal cumulative logistic (ML) model, which is an extension of the marginal homogeneity (MH) model. Miyamoto, Niibe and Tomizawa (2005) proposed the conditional marginal cumulative logistic (CML) model which is defined off the main diagonal cells, and gave the… (More)

- Kouji Tahata, Sadao Tomizawa
- Statistical Methods and Applications
- 2010

For square contingency tables with the same row and column ordinal classifications, we propose a model of quasi-symmetry using the row and column marginal ridits scores. Using the proposed model, the model of equality of marginal mean ridits and the model of equality of marginal variance ridits, we give a theorem such that the symmetry model holds if and… (More)

- Kiyotaka Iki, Kouji Tahata, Sadao Tomizawa
- MASA
- 2011

- Kouji Tahata, Shuji Ando, Sadao Tomizawa
- MASA
- 2011

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