SemEval-2017 Task 4C English, Sentiment Analysis in Twitter

Organized by seirasto - Current server time: March 24, 2018, 12:16 a.m. UTC


Aug. 1, 2016, midnight UTC


Competition Ends
Jan. 22, 2017, 11:59 p.m. UTC

Semeval 2017 Task 4: Sentiment Analysis in Twitter

Subtask C: Topic-Based Message Polarity Classification

Given a message, classify sentiment conveyed in the tweet towards the topic on a five-point scale (-2,-1,0,1,2).

Evaluation Criteria

For Subtask C, we use macroaveraged mean absolute error as the main measure and a secondary measure, namely, an extension of macroaveraged recall for ordinal regression (Sebastiani, 2016). This will provide better consistency with Subtasks A and B

Terms and Conditions

Please note that by downloading the Twitter data you agree to abide by the Twitter terms of service (


Start: Aug. 1, 2016, midnight


Start: Jan. 16, 2017, midnight

Competition Ends

Jan. 22, 2017, 11:59 p.m.

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# Username Score
1 AngelDeborahSuseelan 0.00000
2 mcliche 0.62100
3 lyashuk 0.83900