Miroslav Smatana

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In this paper we provide modification of approaches for extraction of keyphrases from single textual document (without external information) based on the hierarchical concepts created upon the text of particular document. For the creation of hierarchical concepts method from area of Formal Concept Analysis (FCA) is used, which organizes objects into concept(More)
Aspect-based sentiment analysis has become popular research field which allows the quantification of textual evaluations of different aspects of products and services. Methods of aspect-based sentiment analysis built on machine learning usually depend on manually annotated training corpora. In order to facilitate the processes of their creation, annotation(More)
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