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Learning Probabilistic Models of Link Structure (2002)

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by Lise Getoor , Nir Friedman , Daphne Koller , Ben Taskar
Venue:Journal of Machine Learning Research
Citations:89 - 11 self
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BibTeX

@ARTICLE{Getoor02learningprobabilistic,
    author = {Lise Getoor and Nir Friedman and Daphne Koller and Ben Taskar},
    title = {Learning Probabilistic Models of Link Structure},
    journal = {Journal of Machine Learning Research},
    year = {2002},
    volume = {3},
    pages = {679--707}
}

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Abstract

Most real-world data is heterogeneous and richly interconnected. Examples include the Web, hypertext, bibliometric data and social networks. In contrast, most statistical learning methods work with "flat" data representations, forcing us to convert our data into a form that loses much of the link structure. The recently introduced framework of probabilistic relational models (PRMs) embraces the object-relational nature of structured data by capturing probabilistic interactions between attributes of related entities. In this paper, we extend this framework by modeling interactions between the attributes and the link structure itself. An advantage of our approach is a unified generarive model for both content and relational structure. We propose two mechanisms for representing a probabilistic distribution over link structures: reference uncertainty and existence uncertainty. We describe the appropriate conditions for using each model and present learning algorithms for each. We present experimental results showing that the learned models can be used to predict link structure and, moreover, the observed link structure can be used to provide better predictions for the attributes in the model.

Citations

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26 Probabilistic logic programming and Bayesian networks - Ngo, Haddawy - 1995
22 Towards structural logistic regression: Combining relational and statistical learning - Popescul, Ungar, et al. - 2002
3 Inductive Logic Programming: techniques and applications - Lavra, Deroski - 1994
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