As early as over a century ago, the American semiotician Charles Sanders Peirce laid down a solid foundation for this work by proposing his famous trichotomy of signs.
早在一个多世纪前,美国符号学家查尔斯·桑德斯·皮尔斯就为这项工作打下坚实的基础,提出着名的三分法。
Roman Jakobson (1896-1982) is a famous Russian American linguist, literary theorist and semiotician of the 20 ~ (th) century.