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- W16684999 abstract "The most common way to learn the structure of Bayesian networks is to use a score function together with an optimization process. When no prior knowledge is available over the structure, score functions based on information theory are used to balance the entropy of the conditional probability tables with network complexity. Clearly, this complexity has a high impact on the uncertainty about the estimation of the conditional distributions. However, this complexity is estimated independently of the computation of the entropy and thus does not faithfully handle the uncertainty about the estimation. In this paper we propose a new entropy function based on a “possibilistic upper entropy” which relies on the entropy of a possibility distribution that encodes an upper bound of the estimation of the frequencies. Since the network structure has a direct effect on the number of pieces of data available for probability estimation, the possibilistic upper entropy is of an effective interest for learning the structure of the network. We also show that possibilistic upper entropy can be used for obtaining an incremental algorithm for the online learning of Bayesian network." @default.
- W16684999 created "2016-06-24" @default.
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- W16684999 date "2015-01-01" @default.
- W16684999 modified "2023-09-30" @default.
- W16684999 title "Learning Structure of Bayesian Networks by Using Possibilistic Upper Entropy" @default.
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- W16684999 doi "https://doi.org/10.1007/978-3-319-10765-3_11" @default.
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