Abstract
Social media monitoring has become an important means for business analytics and trend detection, for instance, analyzing the sentiment towards a certain product or decision. While a lot of work has been dedicated to analyze sentiment for English texts, much less effort has been put into providing accurate sentiment classification for the German language. In this paper, we analyze three established classifiers for the German language with respect to Facebook posts. We then present our own hierarchical approach to classify sentiment and evaluate it using a data set of \(\sim \)640 Facebook posts from corporate as well as governmental Facebook pages. We compare our approach to three sentiment classifiers for German, i.e. AlchemyAPI, Semantria and SentiStrength. With an accuracy of 70 %, our approach performs better than the other classifiers. In an application scenario, we demonstrate our classifier’s ability to monitor changes in sentiment with respect to the refugee crisis.
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Notes
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Classifiers such as Naive Bayes and Logistic Regression did not yield better results.
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Experiments with a single layer classifier (same settings) led to an accuracy of 0.68 %.
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The application can be downloaded from the project GitHub repostory https://github.com/fsteinbauer/nldb16-sentiment-analysis.
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Acknowledgements
This work is funded by the KIRAS program of the Austrian Research Promotion Agency (FFG) (project nr. 840824). The Know-Center is funded within the Austrian COMET Program under the auspices of the Austrian Ministry of Transport, Innovation and Technology, the Austrian Ministry of Economics and Labour and by the State of Styria. COMET is managed by the Austrian Research Promotion Agency FFG.
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© 2016 Springer International Publishing Switzerland
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Steinbauer, F., Kröll, M. (2016). Sentiment Analysis for German Facebook Pages. In: Métais, E., Meziane, F., Saraee, M., Sugumaran, V., Vadera, S. (eds) Natural Language Processing and Information Systems. NLDB 2016. Lecture Notes in Computer Science(), vol 9612. Springer, Cham. https://doi.org/10.1007/978-3-319-41754-7_44
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DOI: https://doi.org/10.1007/978-3-319-41754-7_44
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