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2016 | OriginalPaper | Buchkapitel

Multi-dimension Diversification in Legal Information Retrieval

verfasst von : Marios Koniaris, Ioannis Anagnostopoulos, Yannis Vassiliou

Erschienen in: Web Information Systems Engineering – WISE 2016

Verlag: Springer International Publishing

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Abstract

The number of freely available legal data sets is increasing at high speed. Citizens can easily access a lot of information about regulations, court orders, statutes, opinions and analytical documents. Such openness brings undeniable benefits in terms of transparency, participation and availability of new services. However, legal information overload poses new challenges, especially in the field of Legal Information Retrieval. Search result diversification has gained attention as a way to increase user satisfaction in web search. We hypothesize that such a strategy will also be beneficial for search on legal data sets. We address diversification of results in legal search by introducing legal domain specific diversification criteria and adopting several state of the art methods from the web search, network analysis and text summarization domains. We evaluate our diversification framework using a real data set from the Common Law domain that we subjectively annotated with relevance judgments for this purpose. Our findings reveal that web search diversification techniques outperform other approaches (e.g. summarization-based, graph-based methods) in the context of legal diversification, as well as that the diversity criteria we introduce provide distinctively diverse subsets of resulting documents, thus differentiating our proposal in respect to traditional diversification techniques.

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Vorheriges Kapitel Select, Link and Rank: Diversified Query Expansion and Entity Ranking Using Wikipedia

Nächstes Kapitel Generating Multiple Diverse Summaries

Case documents usually cite previous cases, which in turn may have cited other cases and thus a network is formed over time with these citations between cases.

Legal norm inherited from English common law that encourages judges to follow precedent by letting the past decision stand.

http://en.wikipedia.org/wiki/Readability.

http://www.supremecourt.gov/.

http://www.courtlistener.com, a free legal research website containing legal opinions from federal and state courts.

http://scdb.wustl.edu.

http://trec.nist.gov/data/web10.html.

A taxonomy of identifying points of law from reported cases and organizing them by topic and key number. It is used to organize the entire body of American law.

http://mallet.cs.umass.edu/.

https://github.com/mkoniari/MultiLegalDiv.

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Titel: Multi-dimension Diversification in Legal Information Retrieval
verfasst von: Marios Koniaris
Ioannis Anagnostopoulos
Yannis Vassiliou
Verlag: Springer International Publishing
Buch: Web Information Systems Engineering – WISE 2016
Print ISBN: 978-3-319-48739-7

Electronic ISBN: 978-3-319-48740-3

Copyright-Jahr: 2016
DOI: https://doi.org/10.1007/978-3-319-48740-3_12

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