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Design and Evaluation of Empirical Models for Stock Price Prediction

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  • JUNQUÉ DE FORTUNY, Enric
  • DE SMEDT, Tom
  • MARTENS, David
  • DAELEMANS, Walter
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    Abstract

    The efficiënt market hypothesis and related theories claim that it is impossible to predict future stock prices. Even so, empirical research has countered this claim by achieving better than random prediction performance. Using a model built from a combination of text mining and time series prediction, we provide further evidence to counter the efficient market hypothesis. We discuss the difficulties in evaluating such models by investigating the drawbacks of the common choices of evaluation metrics used in these empirical studies. We continue by suggesting alternative techniques to validate stock prediction models, circumventing these shortcomings. Finally, a trading system is built for the Euronext Brussels stock exchange market. In our framework, we applied a novel sentiment mining technique in the design of the model and show the usefulness of state-of-the-art explanation-based techniques to validate the resulting models.

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    File URL: https://www.uantwerpen.be/images/uantwerpen/container1244/files/TEW%20-%20Onderzoek/Working%20Papers/RPS/2012/RPS-2012-017.pdf
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    Bibliographic Info

    Paper provided by University of Antwerp, Faculty of Applied Economics in its series Working Papers with number 2012017.

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    Length: 24 pages
    Date of creation: Sep 2012
    Date of revision:
    Handle: RePEc:ant:wpaper:2012017

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    Postal: Prinsstraat 13, B-2000 Antwerpen
    Web page: https://www.uantwerp.be/en/faculties/applied-economic-sciences/
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    Related research

    Keywords: Stock prediction; Support Vector Machine; Text mining; Opinion mining;

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    1. Burton G. Malkiel, 2005. "Reflections on the Efficient Market Hypothesis: 30 Years Later," The Financial Review, Eastern Finance Association, Eastern Finance Association, vol. 40(1), pages 1-9, 02.
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