> A troll has been defined in multiple ways in previous literature as a person who initially pretends to be a legitimate participant but later attempts to disru

> A troll has been defined in multiple ways in previous literature as a person who initially pretends to be a legitimate participant but later attempts to disrupt the community[26], as someone who “intentionally disrupts online communities”[77], or “takes pleasure in upsetting others” [47], or more broadly as a person engaging in “negatively marked online behavior” [37] or that “makes trouble” for a discussion forums’ stakeholders [9]. > In this paper, similar to the latter studies, we adopt a definition of trolling that includes flaming, griefing, swearing, or personal attacks, including behavior outside the acceptable bounds defined by several community guidelines for discussion forums [22, 25, 35]. You may have missed part of the relevant section there.