Research on Multifeature-Based Superposter Identification in Online Learning Forums

Table 1

Indexes and description of model features.

Items	Features (symbol)	Description
Language expression ()	Word normalization	To survey the use of Class I and Class II Chinese characters in posts
	Term nonnormalization	To survey the use of uncivil words and Internet slangs in posts
	Language elegance	To survey the use of words, phrases, and idioms
Content quality ()	Learning collaboration	To survey posters’ ability to solve others’ problems
	Correlation with the thread	To survey the similarity between the reply content and the thread title
	Expertise of content	To survey the knowledge points involved in posts
Social network interaction ()	Out-degree centrality	To survey the intermediate status of posters in network structure
	In-degree centrality	To survey the authority of posters in network structure