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... not buried in lots of result pages, and the human users would have to read them to extract entities and connect them to other entities. In this sense, the envisioned large-scale knowledge harvesting =-=[42, 43]-=- from Web sources may also be viewed as machine reading [13]. 2 Target Audience, Aims, and Organization of the Tutorial The tutorial is aimed towards a broad audience of researchers from the DB, IR, a...

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... triples of the form (subject, predicate, object), meaning that subject is related to object via predicate. By exploiting the advances of methods that automatically extract information from Web sites =-=[16]-=-, such datasets became extremely large and grow continuously. For example, the Billion Triples Challenge dataset of 20121 contains about 1.44B triples, while DBPedia v3.9, Freebase and Yago alone feat...

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...imilarity and Kullback-Leibler divergence. We apply traditional entity linking strategies to the domainoriented knowledge base obtained with these filtering techniques. Finally, we use the resulting enriched documents to conduct a preliminary user study with an expert in the area. Keywords: Entity Linking, Entity Filtering, Information Search and Retrieval, Document Enriching 1 Introduction In the latest years, document enriching via Entity Linking (EL) has gained increasing interests due to its impact in several text-understanding related tasks, e.g., web search, document classification, etc [11,12]. The EL problem has been introduced in 2007 by Mihalcea and Csomai [8] and consists in linking short fragments of text within a document to an entity listed in a given Knowledge Base (KB). The authors also propose to consider each Wikipedia article as an entity, and the title or the anchor text of the hyperlinks pointing to the article as potential mentions to the entity. 2 Diego Ceccarelli, et al. In Dresden→ [http://en.wikipedia.org/wiki/Dresden], Schopenhauer→ [http://en.wikipedia.org/wiki/Arthur Schopenhauer] became acquainted with the philosopher→ [http://en.wikipedia.org/wiki/Philosophe...

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...ns For the Web search engines to advance into a more expressive semantic level, we need tools that could extract the information from the Web and represent it in a machine readable format such as RDF =-=[1]-=-. Information extraction at Web scale is the first step in persuing this goal. However, current algorithmic approaches often fail to achieve satisfactory performance in real-world application scenario...

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...oriented, valued-added level of gathering, organizing, searching, and ranking entities and relations from Web sources. This tutorial uses some material from an invited tutorial presented at PODS 2010 =-=[2]-=- and from a tutorial presented at CIKM 2010 [5]. 4 Outline The tutorial is organized into four main parts: • Part 1 (2 hours) explains the content and organization of the largest ones of the publicly ...

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...oriented, valued-added level of gathering, organizing, searching, and ranking entities and relations from Web sources. This tutorial uses some material from an invited tutorial presented at PODS 2010 =-=[2]-=- and from a tutorial presented at CIKM 2010 [5]. 4 Outline The tutorial is organized into four main parts: • Part 1 (2 hours) explains the content and organization of the largest ones of the publicly ...