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(3) The high energy coefficients in the diagonal orientation correspond to relevant terms in a document in comparison to other terms. If we filter using the wavelet coefficients and fulfil these three conditions simultaneously, we can obtain a reduced vocabulary of the corpus, with less dimensions than in the original one. To test the success of the reduced vocabulary, we recoded the corpus with the new reduced vocabulary and we obtained a statistically relevant level of accuracy for document classification.<\/jats:p>","DOI":"10.1142\/s0219649220500392","type":"journal-article","created":{"date-parts":[[2020,11,28]],"date-time":"2020-11-28T01:44:17Z","timestamp":1606527857000},"page":"2050039","source":"Crossref","is-referenced-by-count":3,"title":["Text Categorisation Through Dimensionality Reduction Using Wavelet Transform"],"prefix":"10.1142","volume":"19","author":[{"given":"Jorge","family":"Chamorro-Padial","sequence":"first","affiliation":[{"name":"Departamento de Ciencias de la Computaci\u00f3n e Inteligencia Artificial, CITIC-UGR Universidad de Granada, 18071 Granada, Spain"}]},{"given":"Rosa","family":"Rodr\u00edguez-S\u00e1nchez","sequence":"additional","affiliation":[{"name":"Departamento de Ciencias de la Computaci\u00f3n e Inteligencia Artificial, CITIC-UGR Universidad de Granada, 18071 Granada, Spain"}]}],"member":"219","published-online":{"date-parts":[[2020,11,27]]},"reference":[{"key":"S0219649220500392BIB001","doi-asserted-by":"publisher","DOI":"10.1142\/S0219649217500046"},{"issue":"3","key":"S0219649220500392BIB002","doi-asserted-by":"crossref","first-page":"175","DOI":"10.1080\/00031305.1992.10475879","volume":"46","author":"Altman NS","year":"1992","journal-title":"The American Statistician"},{"volume-title":"Proceedings of International Conference on Recent Trends in Computing, Communication & Networking Technologies (ICRTCCNT)","year":"2019","author":"Ameena NS","key":"S0219649220500392BIB003"},{"issue":"2","key":"S0219649220500392BIB004","doi-asserted-by":"crossref","first-page":"225","DOI":"10.1016\/j.jksuci.2018.05.010","volume":"32","author":"Bahassine S","year":"2020","journal-title":"Journal of King Saud University \u2014 Computer and Information Sciences"},{"issue":"4","key":"S0219649220500392BIB006","first-page":"993","volume":"3","author":"Blei DM","year":"2003","journal-title":"Journal of Machine Learning Research"},{"issue":"1","key":"S0219649220500392BIB007","first-page":"1","volume":"45","author":"Das AK","year":"2020","journal-title":"Sadhana \u2014 Academy Proceedings in Engineering Sciences"},{"issue":"3","key":"S0219649220500392BIB008","doi-asserted-by":"crossref","first-page":"1671","DOI":"10.1121\/1.406784","volume":"93","author":"Daubechies I","year":"1993","journal-title":"The Journal of the Acoustical Society of America"},{"issue":"1","key":"S0219649220500392BIB009","doi-asserted-by":"crossref","first-page":"188","DOI":"10.1002\/aris.1440380105","volume":"38","author":"Dumais ST","year":"2005","journal-title":"Annual Review of Information Science and Technology"},{"volume-title":"2019 Open Conference of Electrical, Electronic and Information Sciences, EStream 2019 \u2014 Proceedings","year":"2019","author":"Dzisevic R","key":"S0219649220500392BIB010"},{"journal-title":"Journal of Applied Economics Letters","year":"2020","author":"Edison H","key":"S0219649220500392BIB011"},{"issue":"1","key":"S0219649220500392BIB012","first-page":"199","volume":"8","author":"Fengxi S","year":"2005","journal-title":"Pattern Analysis and Applications"},{"key":"S0219649220500392BIB013","doi-asserted-by":"crossref","first-page":"465","DOI":"10.1145\/62437.62487","volume-title":"Proceedings of the 11th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval","author":"Furnas GW","year":"1988"},{"key":"S0219649220500392BIB014","volume":"86","author":"Gang K","year":"2020","journal-title":"Applied Soft Computing"},{"key":"S0219649220500392BIB015","first-page":"50","volume-title":"Proceedings of the 22nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 1999","author":"Hofmann T","year":"1999"},{"volume-title":"IEEE\/ACS International Conference on Computer Systems and Applications (AICCSA 2008)","year":"2008","author":"Hussin MF","key":"S0219649220500392BIB016"},{"key":"S0219649220500392BIB017","volume-title":"Intelligent Decision Technologies 2019. 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