Oliver Dürr


2014

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JOINT_FORCES: Unite Competing Sentiment Classifiers with Random Forest
Oliver Dürr | Fatih Uzdilli | Mark Cieliebak
Proceedings of the 8th International Workshop on Semantic Evaluation (SemEval 2014)

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Meta-Classifiers Easily Improve Commercial Sentiment Detection Tools
Mark Cieliebak | Oliver Dürr | Fatih Uzdilli
Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14)

In this paper, we analyze the quality of several commercial tools for sentiment detection. All tools are tested on nearly 30,000 short texts from various sources, such as tweets, news, reviews etc. The best commercial tools have average accuracy of 60%. We then apply machine learning techniques (Random Forests) to combine all tools, and show that this results in a meta-classifier that improves the overall performance significantly.