A Moment-Based Test for Homogeneity in Finite Mixture Models
A Moment-Based Test for Homogeneity in Finite Mixture Models
复制标题
有限混合模型中基于矩的均匀性检验
DOI:
10.1080/03610920802439153
复制
发表时间:
2009-04
影响因子:
0.8
通讯作者:
张三国
中科院分区:
文献类型:
--
作者:
张三国
This research is about testing homogeneity in finite mixture models. In literature, solutions to this problem normally involve first establishing the identifiability of parameters, then testing the hypothesis whether the data come from a single distribution or a mixture of distributions. We propose a moment-based test without getting into the issue of parameter estimability. Our simulations demonstrate that the power of our test is comparable to LRT, C(α) test, and bootstrap test with the additional advantage that our test always controls the Type I error rate within the nominal α level for the normal case. We demonstrate our test on a real data set to identify potential predictive biomarkers for hospitalization in hemodialysis patients.
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DOI:
10.1016/0378-3758(94)00006-h
发表时间:
1995-01-01
影响因子:
0.9
作者:
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通讯作者:
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影响因子:
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影响因子:
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影响因子:
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影响因子:
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