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- 134 creator arnab-dutta.
- 134 creator christian-meilicke.
- 134 creator simone-paolo-ponzetto.
- 134 type InProceedings.
- 134 label "A Probabilistic Approach for Integrating Heterogeneous Knowledge Sources".
- 134 sameAs 134.
- 134 abstract "In the past years, open-domain Information Extraction (IE) systems like Nell and ReVerb have achieved impressive results by harvesting massive amounts of machine-readable knowledge with minimal supervision. However, the knowledge bases they produce still lack a clean, explicit semantic data model. This, on the other hand, could be provided by full-fledged semantic networks like DBpedia or Yago, which, in turn, would benefit from the additional coverage provided by Web-scale IE. In this paper, we bring these two strains of research together, and present a method to align terms from Nell with instances in DBpedia. Our approach is unsupervised in nature and relies on two key components. First, we automatically acquire probabilistic type information for Nell terms given a set of matching hypotheses. Second, we view the mapping task as the statistical inference problem of finding the most likely coherent mapping – i.e., the maximum a posteriori (MAP) mapping – based on the outcome of the first component used as soft constraint. These two steps are highly intertwined: accordingly, we propose an approach that iteratively refines type acquisition based on the output of the mapping generator, and vice versa. Experimental results on gold-standard data indicate that our approach outperforms a strong baseline, and is able to produce ever-improving mappings consistently across iterations.".
- 134 hasAuthorList authorList.
- 134 isPartOf proceedings.
- 134 keyword "Knowledge refinement".
- 134 keyword "Markov Logic Network".
- 134 keyword "Open Information Extraction".
- 134 keyword "Probabilistic Reasoning".
- 134 title "A Probabilistic Approach for Integrating Heterogeneous Knowledge Sources".