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arXiv 1005.2263stat.MLcs.LG
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覆盖序列的语境模型

Context models on sequences of covers

Christos Dimitrakakis

摘要:

我们提出了一类模型,通过一个简单的结构,使精确的,增量的,非参数的,多项式时间,贝叶斯推断的条件措施。该方法依赖于在条件变量上创建一系列覆盖,并为覆盖内的每个集合维护不同的模型。通过在覆盖序列内指定随机游动的概率模型,推理仍然是容易处理的。我们证明了问题的条件密度估计,这是我们所知的第一个封闭形式,非参数贝叶斯方法来解决这个问题的方法。

英文摘要:

We present a class of models that, via a simple construction, enables exact, incremental, non-parametric, polynomial-time, Bayesian inference of conditional measures. The approach relies upon creating a sequence of covers on the conditioning variable and maintaining a different model for each set within a cover. Inference remains tractable by specifying the probabilistic model in terms of a random walk within the sequence of covers. We demonstrate the approach on problems of conditional density estimation, which, to our knowledge is the first closed-form, non-parametric Bayesian approach to this problem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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