@inproceedings{chen-etal-2025-enhancing-investment,
    title = "Enhancing Investment Opinion Ranking through Argument-Based Sentiment Analysis",
    author = "Chen, Chung-Chi  and
      Huang, Hen-Hsen  and
      Chen, Hsin-Hsi  and
      Takamura, Hiroya  and
      Kobayashi, Ichiro  and
      Miyao, Yusuke",
    editor = "Inui, Kentaro  and
      Sakti, Sakriani  and
      Wang, Haofen  and
      Wong, Derek F.  and
      Bhattacharyya, Pushpak  and
      Banerjee, Biplab  and
      Ekbal, Asif  and
      Chakraborty, Tanmoy  and
      Singh, Dhirendra Pratap",
    booktitle = "Proceedings of the 14th International Joint Conference on Natural Language Processing and the 4th Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics",
    month = dec,
    year = "2025",
    address = "Mumbai, India",
    publisher = "The Asian Federation of Natural Language Processing and The Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.ijcnlp-long.71/",
    pages = "1305--1315",
    ISBN = "979-8-89176-298-5",
    abstract = "In the era of rapid Internet and social media development, individuals readily share their investment opinions online. The overwhelming volume of such opinions makes comprehensive evaluation impractical, highlighting the need for an effective recommendation system that can identify valuable insights. To address this challenge, we propose an argument-based sentiment analysis framework that incorporates a new perspective on opinion strength. Our approach introduces the concept of a Fuzzy Strength Degree (FSD), derived from the difference between analysts' target and closing prices, to quantify the intensity of opinions. By integrating argument mining techniques, we further decompose each opinion into claims and premises, examine their relationships, and use these structures to evaluate the persuasive strength of the arguments. This dual strategy allows us to rank both professional and amateur investor opinions without relying on user history or social signals. Experiments show that our method works best for analyst reports, while on social media, simpler approaches based on wording and professionalism features perform better. Moreover, our analysis of professional analysts' and traders' behaviors reveals that top-ranked opinions are more likely to influence subsequent market actions. These findings demonstrate that argument structure and quantified opinion strength provide a novel and reliable foundation for investment opinion recommendation."
}