An unsupervised aspect detection model for sentiment analysis of reviews

Ayoub Bagheri, M. Saraee, Franciska M.G. de Jong

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    28 Citations (Scopus)
    1299 Downloads (Pure)

    Abstract

    With the rapid growth of user-generated content on the internet, sentiment analysis of online reviews has become a hot research topic recently, but due to variety and wide range of products and services, the supervised and domain-specific models are often not practical. As the number of reviews expands, it is essential to develop an efficient sentiment analysis model that is capable of extracting product aspects and determining the sentiments for aspects. In this paper, we propose an unsupervised model for detecting aspects in reviews. In this model, first a generalized method is proposed to learn multi-word aspects. Second, a set of heuristic rules is employed to take into account the influence of an opinion word on detecting the aspect. Third a new metric based on mutual information and aspect frequency is proposed to score aspects with a new bootstrapping iterative algorithm. The presented bootstrapping algorithm works with an unsupervised seed set. Finally two pruning methods based on the relations between aspects in reviews are presented to remove incorrect aspects. The proposed model does not require labeled training data and can be applicable to other languages or domains. We demonstrate the effectiveness of our model on a collection of product reviews dataset, where it outperforms other techniques.
    Original languageUndefined
    Title of host publicationProceedings of the 18th International Conference on Applications of Natural Language to Information Systems, NLDB 2013
    Place of PublicationLondon
    PublisherSpringer
    Pages140-151
    Number of pages12
    ISBN (Print)978-3-642-38823-1
    DOIs
    Publication statusPublished - Jun 2013

    Publication series

    NameLecture Notes in Computer Science
    PublisherSpringer Verlag
    Volume7934
    ISSN (Print)0302-9743
    ISSN (Electronic)1611-3349

    Keywords

    • HMI-SLT: Speech and Language Technology
    • METIS-297709
    • IR-86480
    • EWI-23462

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