Dame Jovanoski


2016

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On the Impact of Seed Words on Sentiment Polarity Lexicon Induction
Dame Jovanoski | Veno Pachovski | Preslav Nakov
Proceedings of COLING 2016, the 26th International Conference on Computational Linguistics: Technical Papers

Sentiment polarity lexicons are key resources for sentiment analysis, and researchers have invested a lot of efforts in their manual creation. However, there has been a recent shift towards automatically extracted lexicons, which are orders of magnitude larger and perform much better. These lexicons are typically mined using bootstrapping, starting from very few seed words whose polarity is given, e.g., 50-60 words, and sometimes even just 5-6. Here we demonstrate that much higher-quality lexicons can be built by starting with hundreds of words and phrases as seeds, especially when they are in-domain. Thus, we combine (i) mid-sized high-quality manually crafted lexicons as seeds and (ii) bootstrapping, in order to build large-scale lexicons.

2015

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Sentiment Analysis in Twitter for Macedonian
Dame Jovanoski | Veno Pachovski | Preslav Nakov
Proceedings of the International Conference Recent Advances in Natural Language Processing