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Beyond Black Box Densities: Parameter Learning for the Deviated Components. (arXiv:2202.02651v2 [stat.ML] UPDATED)
Oct. 28, 2022, 1:12 a.m. | Dat Do, Nhat Ho, XuanLong Nguyen
cs.LG updates on arXiv.org arxiv.org
As we collect additional samples from a data population for which a known
density function estimate may have been previously obtained by a black box
method, the increased complexity of the data set may result in the true density
being deviated from the known estimate by a mixture distribution. To model this
phenomenon, we consider the \emph{deviating mixture model} $(1-\lambda^{*})h_0
+ \lambda^{*} (\sum_{i = 1}^{k} p_{i}^{*} f(x|\theta_{i}^{*}))$, where $h_0$ is
a known density function, while the deviated proportion $\lambda^{*}$ and …
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