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Mirko Lai, Delia Irazú Hernández Farías, Viviana Patti, Paolo Rosso. Friends and Enemies of Clinton and Trump: Using Context for Detecting Stance in Political Tweets. Advances in Computational Intelligence: 15th Mexican International Conference on Artificial Intelligence, MICAI 2016, Cancún, Mexico, October 23--28, 2016, Proceedings, Part I, 2017. Grigori Sidorov, Oscar Herrera-Alcántara (Editors). pp. 155-168. Springer International Publishing.

Stance detection, the task of identifying the speaker's opinion towards a particular target, has attracted the attention of researchers. This paper describes a novel approach for detecting stance in Twitter. We define a set of features in order to consider the context surrounding a target of interest with the final aim of training a model for predicting the stance towards the mentioned targets. In particular, we are interested in investigating political debates in social media. For this reason we evaluated our approach focusing on two targets of the SemEval-2016 Task 6 on Detecting stance in tweets, which are related to the political campaign for the 2016 U.S. presidential elections: Hillary Clinton vs. Donald Trump. For the sake of comparison with the state of the art, we evaluated our model against the dataset released in the SemEval-2016 Task 6 shared task competition. Our results outperform the best ones obtained by participating teams, and show that information about enemies and friends of politicians help in detecting stance towards them.", isbn="978-3-319-62434-1