Abstract
The paper describes an approach to the emotional tonality assessment of natural language texts based on special dictionaries. A method for an automatic assessment of public opinion by means of sentiment-analysis of reviews and discussions followed by published Web-documents is proposed. The method is based on statistics of words in the documents. A pilot model of the software system implementing the sentiment-analysis of natural language text in Russian based on a linear assessment scale is developed. A syntactic analysis and words lemmatization are used to identify terms more correctly. Tonality dictionaries are presented in editable format and are open for enhancing. The program system implementing a sentiment-analysis of the Russian texts based on open dictionaries of tonality is presented for the first time.
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