Feldman, R., Rosenfeld, B., Bar-Haim, R., & Fresko, M. (2011). The Stock Sonar — Sentiment Analysis of Stocks Based on a Hybrid Approach. Proceedings of the AAAI Conference on Artificial Intelligence, 25(2), 1642-1647. https://doi.org/10.1609/aaai.v25i2.18854