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- W2964156586 abstract "We propose a new class of semiparametric exponential family graphical models for the analysis of high dimensional mixed data. Different from the existing mixed graphical models, we allow the nodewise conditional distributions to be semiparametric generalized linear models with unspecified base measure functions. Thus, one advantage of our method is that it is unnecessary to specify the type of each node and the method is more convenient to apply in practice. Under the proposed model, we consider both problems of parameter estimation and hypothesis testing in high dimensions. In particular, we propose a symmetric pairwise score test for the presence of a single edge in the graph. Compared to the existing methods for hypothesis tests, our approach takes into account of the symmetry of the parameters, such that the inferential results are invariant with respect to the dierent parametrizations of the same edge. Thorough numerical simulations and a real data example are provided to back up our theoretical results." @default.
- W2964156586 created "2019-07-30" @default.
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- W2964156586 date "2018-01-01" @default.
- W2964156586 modified "2023-09-23" @default.
- W2964156586 title "On semiparametric exponential family graphical models" @default.
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