Some Issues on Detecting Negation from Text

Negation is present in all human languages and it is used to reverse the polarity of parts of a statement. It is a complex phenomenon that interacts with many other aspects of language. Besides the direct meaning, negated statements often carry a latent positive meaning. Negation can be interpreted in terms of its scope and focus. This paper explores the importance of both scope and focus to capture the meaning of negated statements. Some issues on detecting negation from text are outlined, the forms in which negation occurs are depicted and heuristics to detect its scope and focus are proposed.

[1]  Isaac G. Councill,et al.  What's great and what's not: learning to classify the scope of negation for improved sentiment analysis , 2010, NeSp-NLP@ACL.

[2]  Daniel Gildea,et al.  The Proposition Bank: An Annotated Corpus of Semantic Roles , 2005, CL.

[3]  Roser Morante,et al.  Learning the Scope of Hedge Cues in Biomedical Texts , 2009, BioNLP@HLT-NAACL.

[4]  James Pustejovsky,et al.  FactBank: a corpus annotated with event factuality , 2009, Lang. Resour. Evaluation.

[5]  János Csirik,et al.  The BioScope corpus: biomedical texts annotated for uncertainty, negation and their scopes , 2008, BMC Bioinformatics.

[6]  Roser Morante,et al.  Proceedings of the Workshop on Negation and Speculation in Natural Language Processing, NeSp-NLP@ACL 2010, Uppsala, Sweden, July 10, 2010 , 2010, NeSp-NLP@ACL.

[7]  Johan Bos,et al.  Recognising Textual Entailment with Logical Inference , 2005, HLT.

[8]  Elly van Munster.  The treatment of scope and negation in Rosetta , 1988, COLING.

[9]  Laurence R. Horn.  A Natural History of Negation , 1989 .

[10]  Dietrich Klakow,et al.  A survey on the role of negation in sentiment analysis , 2010, NeSp-NLP@ACL.

[11]  Carolyn Penstein Rosé,et al.  A Hybrid Text Classification Approach for Analysis of Student Essays , 2003, HLT-NAACL 2003.

[12]  Jaakko Hintikka,et al.  Negation in Logic and in Natural Language , 2002 .

[13]  János Csirik,et al.  The CoNLL-2010 Shared Task: Learning to Detect Hedges and their Scope in Natural Language Text , 2010, CoNLL Shared Task.

[14]  Chris Brew.  The Cambridge Grammar of the English Language , 2003 .

[15]  David R. Dowty.  The Role of Negative Polarity and Concord Marking in Natural Language Reasoning , 1994 .

[16]  Hedde Zeijlstra,et al.  Negation in Natural Language: On the Form and Meaning of Negative Elements , 2007, Lang. Linguistics Compass.

[17]  Dragomir R. Radev,et al.  Detecting Speculations and their Scopes in Scientific Text , 2009, EMNLP.

[18]  Victor Manual Sánchez Valencia,et al.  Studies on natural logic and categorial grammar , 1991 .

[19]  Laurence R. Horn,et al.  Negation and polarity : syntactic and semantic perspectives , 2000 .

[20]  Janyce Wiebe,et al.  Articles: Recognizing Contextual Polarity: An Exploration of Features for Phrase-Level Sentiment Analysis , 2009, CL.