Chen C.-CHuang H.-HHSIN-HSI CHEN2021-09-022021-09-02202121915768https://www.scopus.com/inward/record.uri?eid=2-s2.0-85106436368&doi=10.1007%2f978-981-16-2881-8_1&partnerID=40&md5=6fd68abb1e6906df38aa277e09fcaedfhttps://scholars.lib.ntu.edu.tw/handle/123456789/581354Financial opinion mining is a branch of traditional opinion mining and sentiment analysis which shares the basic notions of traditional approaches and adds its own domain-specific characteristics. In Sect.?1.1, we start with a common definition of general opinion mining after which we briefly overview traditional research directions. ? 2021, The Author(s).Data mining; Domain specific; Opinion mining; Traditional approaches; Sentiment analysisbook part10.1007/978-981-16-2881-8_12-s2.0-85106436368