Algebra and geometry of tensors for modeling rater agreement data

Cristiano Bocci; Fabio Rapallo

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arXiv · 1802.08175

Algebra and geometry of tensors for modeling rater agreement data

Cristiano Bocci·Fabio Rapallo

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Abstract

We study three different quasi-symmetry models and three different mixture models of $n\times n\times n$ tensors for modeling rater agreement data. For these models we give a geometric description of the associated varieties and we study their invariants distinguishing between the case $n=2$ and the case $n>2$. Finally, for the two models for pairwise agreement we state some results about the pairwise Cohen's $\kappa$ coefficients.

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Cristiano Bocci, Fabio Rapallo. 2018-02-21. Algebra and geometry of tensors for modeling rater agreement data. https://arxiv.org/abs/1802.08175

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