A case study in text mining of discussion forum posts: Classification with bag of words and global vectors

Cichosz, P.

doi:10.2478/amcs-2018-0060

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Tytuł artykułu

A case study in text mining of discussion forum posts: Classification with bag of words and global vectors

Autorzy

Cichosz P.

Treść / Zawartość

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14_cichosz_a_case_study_in_text_mining_2018_4.pdf

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DOI

10.2478/amcs-2018-0060

Warianty tytułu

Języki publikacji

Abstrakty

Despite the rapid growth of other types of social media, Internet discussion forums remain a highly popular communication channel and a useful source of text data for analyzing user interests and sentiments. Being suited to richer, deeper, and longer discussions than microblogging services, they particularly well reflect topics of long-term, persisting involvement and areas of specialized knowledge or experience. Discovering and characterizing such topics and areas by text mining algorithms is therefore an interesting and useful research direction. This work presents a case study in which selected classification algorithms are applied to posts from a Polish discussion forum devoted to psychoactive substances received from home-grown plants, such as hashish or marijuana. The utility of two different vector text representations is examined: the simple bag of words representation and the more refined embedded global vectors one. While the former is found to work well for the multinomial naive Bayes algorithm, the latter turns out more useful for other classification algorithms: logistic regression, SVMs, and random forests. The obtained results suggest that post-classification can be applied for measuring publication intensity of particular topics and, in the case of forums related to psychoactive substances, for monitoring the risk of drug-related crime.

Słowa kluczowe

text mining discussion forum text representation document classification word embedding

eksploracja tekstu forum dyskusyjne reprezentacja tekstu klasyfikacja dokumentów

Wydawca

Oficyna Wydawnicza Uniwersytetu Zielonogórskiego

Czasopismo

International Journal of Applied Mathematics and Computer Science

Rocznik

2018

Tom

Vol. 28, no. 4

Strony

787--801

Opis fizyczny

Bibliogr. 66 poz., tab., wykr.

Twórcy

autor

Cichosz P.

p.cichosz@elka.pw.edu.pl

Institute of Computer Science, Warsaw University of Technology, Nowowiejska 15/19, 00-665 Warsaw, Poland

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-d20e2cbb-0346-4a8c-9185-f4318377f9fe