Table 10.

Features selected from both account activity and collective HCC activity based on their activity network (described in Sect. 3.2.10)

	Account-level	Group-level
Instances (Uses)	Posts, reposts, replies, mentions, hashtags, URLs	Posts, interactions, user nodes, hashtags, URLs, reposts, quotes, mentions, replies, in-conversations (see Sect. 3)
Unique	Mentions, hashtags, URLs	HCC members, Nodes in the network (including URLs and hashtags), hashtags, URLs
Rates	Posts/minute	Reposts of HCC members/all reposts (cf. IRR), mentions of HCC members/all mentions (cf. IMR), replies to HCC members/all replies
Profile	Default image (boolean)	–
	Characters in description
	Characters in URL

IRR and IMR are defined in Sect. 4.3.3