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• W3130367027 abstract "In this manuscript, we propose a Machine Learning approach to tackle a binary classification problem whose goal is to predict the magnitude (high or low) of future stock price variations for individual companies of the S&P 500 index. Sets of lexicons are generated from globally published articles with the goal of identifying the most impactful words on the market in a specific time interval and within a certain business sector. A feature engineering process is then performed out of the generated lexicons, and the obtained features are fed to a Decision Tree classifier. The predicted label (high or low) represents the underlying company's stock price variation on the next day, being either higher or lower than a certain threshold. The performance evaluation we have carried out through a walk-forward strategy, and against a set of solid baselines, shows that our approach clearly outperforms the competitors. Moreover, the devised Artificial Intelligence (AI) approach is explainable, in the sense that we analyze the white-box behind the classifier and provide a set of explanations on the obtained results." @default.
• W3130367027 created "2021-03-01" @default.
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• W3130367027 date "2021-01-01" @default.
• W3130367027 modified "2023-10-18" @default.
• W3130367027 title "Explainable Machine Learning Exploiting News and Domain-Specific Lexicon for Stock Market Forecasting" @default.
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• W3130367027 doi "https://doi.org/10.1109/access.2021.3059960" @default.
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