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Otterbacher, J.; Radev, D.; Kareem, O.: Hierarchical summarization for delivering information to mobile devices (2008)
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- Abstract
- Access to information via handheld devices supports decision making away from one's computer. However, limitations include small screens and constrained wireless bandwidth. We present a summarization method that transforms online content for delivery to small devices. Unlike previous algorithms, ours assumes nothing about document formatting, and induces a hierarchical structure based on the relative importance of sentences within the document. As compared to delivering full documents, the method reduces the bytes transferred by half. An experiment also demonstrates that when given hierarchical summaries, users are no less accurate in answering questions about the documents.
- Source
- Information processing and management. 44(2008) no.2, S.931-947
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Otterbacher, J.; Radev, D.: Exploring fact-focused relevance and novelty detection (2008)
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- Abstract
- Purpose - Automated sentence-level relevance and novelty detection would be of direct benefit to many information retrieval systems. However, the low level of agreement between human judges performing the task is an issue of concern. In previous approaches, annotators were asked to identify sentences in a document set that are relevant to a given topic, and then to eliminate sentences that do not provide novel information. This paper aims to explore a new approach in which relevance and novelty judgments are made within the context of specific, factual information needs, rather than with respect to a broad topic. Design/methodology/approach - An experiment is conducted in which annotators perform the novelty detection task in both the topic-focused and fact-focused settings. Findings - Higher levels of agreement between judges are found on the task of identifying relevant sentences in the fact-focused approach. However, the new approach does not improve agreement on novelty judgments. Originality/value - The analysis confirms the intuition that making sentence-level relevance judgments is likely to be the more difficult of the two tasks in the novelty detection framework.
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Elkiss, A.; Shen, S.; Fader, A.; Erkan, G.; States, D.; Radev, D.: Blind men and elephants : what do citation summaries tell us about a research article? (2008)
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- Abstract
- The old Asian legend about the blind men and the elephant comes to mind when looking at how different authors of scientific papers describe a piece of related prior work. It turns out that different citations to the same paper often focus on different aspects of that paper and that neither provides a full description of its full set of contributions. In this article, we will describe our investigation of this phenomenon. We studied citation summaries in the context of research papers in the biomedical domain. A citation summary is the set of citing sentences for a given article and can be used as a surrogate for the actual article in a variety of scenarios. It contains information that was deemed by peers to be important. Our study shows that citation summaries overlap to some extent with the abstracts of the papers and that they also differ from them in that they focus on different aspects of these papers than do the abstracts. In addition to this, co-cited articles (which are pairs of articles cited by another article) tend to be similar. We show results based on a lexical similarity metric called cohesion to justify our claims.
- Source
- Journal of the American Society for Information Science and Technology. 59(2008) no.1, S.51-62
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Lam, W.; Chan, K.; Radev, D.; Saggion, H.; Teufel, S.: Context-based generic cross-lingual retrieval of documents and automated summaries (2005)
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- Source
- Journal of the American Society for Information Science and Technology. 56(2005) no.2, S.129-139
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Radev, D.; Fan, W.; Qu, H.; Wu, H.; Grewal, A.: Probabilistic question answering on the Web (2005)
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- Source
- Journal of the American Society for Information Science and Technology. 56(2005) no.6, S.571-583
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Aris, A.; Shneiderman, B.; Qazvinian, V.; Radev, D.: Visual overviews for discovering key papers and influences across research fronts (2009)
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- Source
- Journal of the American Society for Information Science and Technology. 60(2009) no.11, S.2219-2228
