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• W2483632691 abstract "The Dirichlet process and its extension, the Pitman-Yor process, are stochastic processes that take probability distributions as a parameter. These processes can be stacked up to form a hierarchical nonparametric Bayesian model. In this article, we present efficient methods for the use of these processes in this hierarchical context, and apply them to latent variable models for text analytics. In particular, we propose a general framework for designing these Bayesian models, which are called topic models in the computer science community. We then propose a specific nonparametric Bayesian topic model for modelling text from social media. We focus on tweets (posts on Twitter) in this article due to their ease of access. We find that our nonparametric model performs better than existing parametric models in both goodness of fit and real world applications." @default.
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• W2483632691 date "2016-11-01" @default.
• W2483632691 modified "2023-09-23" @default.
• W2483632691 title "Nonparametric Bayesian topic modelling with the hierarchical Pitman–Yor processes" @default.
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• W2483632691 doi "https://doi.org/10.1016/j.ijar.2016.07.007" @default.
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