Beyond Query-Oriented Highlighting: Investigating the Effect of Snippet Text Highlighting in Search User Behavior

Table 3

Evaluation metrics in benefit-cost framework.

Metrics	Description
C-CG	Cumulated gain calculated based on users’ clicked result list
C-DCG	Discounted cumulated gain calculated based on users’ clicked result list
E-CG	Cumulated gain calculated based on users’ examined result list
E-DCG	Discounted cumulated gain calculated based on users’ examined result list
DT	Search task dwell time, not including the time spend on landing pages
C-RN	Number of clicked results
C-RD	Maximum rank of clicked results
C-SL	Length of clicked result list
E-RN	Number examined results
E-RD	Maximum rank of examined results
E-SL	Length of examined result list