National Research Council of Canada. Information and Communication Technologies
9th International Workshop on Semantic Evaluation (SemEval-2015), 4-5 June 2015, Denver, Colorado, USA
In this paper, we describe the 2015 iteration of the SemEval shared task on Sentiment Analysis in Twitter. This was the most popular sentiment analysis shared task to date with more than 40 teams participating in each of the last three years. This year’s shared task competition consisted of five sentiment prediction sub- tasks. Two were reruns from previous years: (A) sentiment expressed by a phrase in the context of a tweet, and (B) overall sentiment of a tweet. We further included three new sub- tasks asking to predict (C) the sentiment to- wards a topic in a single tweet, (D) the over- all sentiment towards a topic in a set of tweets, and (E) the degree of prior polarity of a phrase.
Association for Computational Linguistics
Proceedings of the 9th International Workshop on Semantic Evaluation (SemEval-2015): 451–463.