Titlebook: Unsupervised Information Extraction by Text Segmentation; Eli Cortez,Altigran S. Silva Book 2013 The Author(s) 2013 Databases.Information

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Related Work,e literature (Laender et?al. .), they are divided into distinct groups according to their main approach. These groups are: ., ., ., ., and .. Next, it is specifically presented probabilistic graph-based methods, . and ., and discusses their main characteristics in comparison to the unsupervised approach presented in this book.

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Exploiting Pre-Existing Datasets to Support IETS,ervised approach, including how to learn content-based features from knowledge bases, how to automatically induce structure-based features with no previous human-driven training, a feature that is unique to this approach, and how to effectively combine these features to label segments of a text input.

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Introduction,blem is a research topic in different Computer Science communities, such as: Databases, Information Retrieval, and Artificial Intelligence. This chapter provides an introduction of this problem and also an overview of how information extraction fits into the broader topics of data management. It als

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Exploiting Pre-Existing Datasets to Support IETS,rst, it presents a brief overview of the approach and introduces the concept of knowledge base. Next, it discusses all the steps involved in the unsupervised approach, including how to learn content-based features from knowledge bases, how to automatically induce structure-based features with no pre

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,,in (Cortez et al. .). First, it is introduced the scenario to which .?is targeted to, then we go over the proposed solution detailing all the steps that comprise .. Finally, an experimental evaluation of .?is presented, comparing its result with different baselines available in the literature.

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,,ed approach to deal with the Information Extraction by Text Segmentation problem. . was first presented in Toda et al. (., .). In the following is described the scenario where . is applied, and the method in detail. A set of experiments is also reported that shows that . is effective and works well