[u' @incollection{sixto_approach_2016, series = {Lecture {Notes} in {Computer} {Science}}, title = {An {Approach} to {Subjectivity} {Detection} on {Twitter} {Using} the {Structured} {Information}}, copyright = {\xa92016 Springer International Publishing Switzerland}, isbn = {978-3-319-45242-5 978-3-319-45243-2}, url = {http://link.springer.com/chapter/10.1007/978-3-319-45243-2_11}, abstract = {In this paper, we propose an approach to the subjectivity detection on Twitter micro texts that explores the uses of the structured information of the social network framework. The sentiment analysis on Twitter has been usually performed through the automatic processing of the texts. However, the established limit of 140 characters and the particular characteristics of the texts reduce drastically the accuracy of Natural Language Processing (NLP) techniques. Under these circumstances, it becomes necessary to study new data sources that allow us to extract new useful knowledge to represent and classify the texts. The structured information, also called meta-information or meta-data, provide us with alternative features of the texts that can improve the classification tasks. In this study we have analysed the use of features extracted from the structured information in the subjectivity detection task, as a first step of the polarity detection task, and their integration with classical features.}, language = {en}, number = {9875}, urldate = {2016-09-22}, booktitle = {Computational {Collective} {Intelligence}}, publisher = {Springer International Publishing}, author = {Sixto, Juan and Almeida, Aitor and L\xf3pez-de-Ipi\xf1a, Diego}, editor = {Nguyen, Ngoc-Thanh and Iliadis, Lazaros and Manolopoulos, Yannis and Trawi\u0144ski, Bogdan}, month = sep, year = {2016}, doi = {10.1007/978-3-319-45243-2_11}, note = {00000 }, keywords = {Artificial Intelligence, Data analysis, Data mining for social networks, NLP, Natural language processing, Sentiment analysis, Social networks, Subjectivity detection, Text categorization, core-c, data mining, machine learning, opinion mining, twitter}, pages = {121--130}, } ']