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The purpose of this paper is to adapt a few sentiment analysis methods to obtain sentiment value for social network statements in the Polish language. Developed methods represent different approaches. Starting with PMI-IR, expansion of dictionary through conjunctive connections method, to determining bigram sentiment by analyzing its neighborhood. Obtained results were compared to the commercial solution...
The aim of this study is to construct a system for pre-processing a text, including tokenization and correction of statements from social network, in order to adapt them for further extraction of information and sentiment analysis. Correction algorithm uses dictionary methods, statistical methods and rules-based approach. The system was tested on 50 statements including different kinds of errors....
The aim of this work was to develop and compare recommendation systems which use the item-based collaborative filtering algorithm, based on Hadoop and Spark. Data for the research were gathered from a real social portal the users of which can express their preferences regarding the applications on offer. The Hadoop version was implemented with the use of the Mahout library which was an element of...
The paper deals with a representation of the antibody-antigen chromosomes. The proposed new binary decoding allows us to prove the dependence between subsequent generations of chromosomes, using quick and simple operations on chromosomes indices, instead of processing the binary strings. Some formal properties of the immune system were expressed based on this representation. A consistency theoretical...
Results on language coevolution in groups of agents were presented in this paper. The dynamics of language development was shown and discussed in a single group and between two groups of agents. In the first case, three kinds of societies were simulated, i.e.: cooperative, competitive and individual. In the second case, relations were defined for mutualism, competition and predation. Both cases enabled...
A Hadamard representation, which is an alternative towards the binary representation, is considered in this study. It operates on numbers +1 and -1. Several properties of such defined representation were pointed out and properties of the immune system were expressed based on this representation.
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