TAILIEUCHUNG - Báo cáo khoa học: "Entailment-based Text Exploration with Application to the Health-care Domain"

Meni Adler Jonathan Berant Ido Dagan Bar Ilan University Tel Aviv University Bar Ilan University Ramat Gan, Israel Tel Aviv, Israel Ramat Gan, Israel adlerm@ jonatha6@ dagan@ Abstract We present a novel text exploration model, which extends the scope of state-of-the-art technologies by moving from standard concept-based exploration to statement-based exploration. The proposed scheme utilizes the textual entailment relation between statements as the basis of the exploration process. A user of our system can explore the result space of a query by drilling down/up from one statement to another, according to entailment relations specified by an entailment graph and an optional concept. | Entailment-based Text Exploration with Application to the Health-care Domain Meni Adler Jonathan Berant Bar Ilan University Tel Aviv University Ramat Gan Israel Tel Aviv Israel adlerm@ Ido Dagan Bar Ilan University Ramat Gan Israel dagan@ Abstract We present a novel text exploration model which extends the scope of state-of-the-art technologies by moving from standard concept-based exploration to statement-based exploration. The proposed scheme utilizes the textual entailment relation between statements as the basis of the exploration process. A user of our system can explore the result space of a query by drilling down up from one statement to another according to entailment relations specified by an entailment graph and an optional concept taxonomy. As a prominent use case we apply our exploration system and illustrate its benefit on the health-care domain. To the best of our knowledge this is the first implementation of an exploration system at the statement level that is based on the textual entailment relation. 1 Introduction Finding information in a large body of text is becoming increasingly more difficult. Standard search engines output a set of documents for a given query but do not allow any exploration of the thematic structure in the retrieved information. Thus the need for tools that allow to effectively sift through a target set of documents is becoming ever more important. Faceted search Stoica and Hearst 2007 Kaki 2005 supports a better understanding of a target domain by allowing exploration of data according to multiple views or facets. For example given a set of documents on Nobel Prize laureates we might have different facets corresponding to the laureate s nationality the year when the prize was awarded the 79 field in which it was awarded etc. However this type of exploration is still severely limited insofar that it only allows exploration by topic rather than content. Put differently we can only

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