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Access status: Open Access ,
Building sentiment lexicons based on recommending services for the Polish language
(Wydawnictwa AGH, 2016) Gliwa, Bogdan; Zygmunt, Anna; Dąbrowski, Michał
Sentiment analysis has become a prominent area of research in computer science. It has numerous practical applications, e.g., evaluating customer satisfaction, identifying product promoters. Many methods employed in this task require language resources such as sentiment lexicons, which are unavailable for the Polish language. Such lexicons contain words annotated with their emotional polarization, but the manual creation of sentiment lexicons is very tedious. Therefore, this paper addresses this issue and describes a new method of building sentiment lexicons automatically based on recommending services. Next, the built lexicons were used in the task of sentiment classification.
Access status: Open Access ,
Analiza blogów internetowych przy użyciu metod sieci społecznych
(Wydawnictwa AGH, 2009) Zygmunt, Anna; Koźlak, Jarosław; Krupczak, Łukasz; Małocha, Bartosz
In the paper the application of Social Network Analysis methods to Weblogs was described. The proposed solutions were explained using political blogs as an example.
Access status: Open Access ,
A proposition of knowledge management methodology for the purpose of reasoning with the use of an upper-ontology
(2007) Szymański, Kamil; Dobrowolski, Grzegorz; Koźlak, Jarosław; Zygmunt, Anna
This article describes a proposition of knowledge organization for the purpose of reasoning using an upper-ontology. It presents a model of integrated ontologies architecture which consists of a domain ontologies layer with instances, a shared upper-ontology layer with additional rules and a layer of ontologies mapping concrete domain ontologies with the upper-ontology. Thanks to the upper-ontology, new facts were concluded from domain ontologies during the reasoning process. A practical realization proposition is given as well. It is based on some popular Semantic Web technologies and tools, such as OWL, SWRL, nRQL, Protege and Racer.
Access status: Open Access ,
Identyfikacja wzorców w ruchu drogowym metodą częstych sekwencji
(Wydawnictwa AGH, 2011) Koźlak, Jarosław; Zygmunt, Anna
The paper concerns the analysis of data about road traffic. We are focusing our analysis on the frequent sequences. The analysed data was obtained using multi-agent simulator for modelling and optimisation of road traffic.

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