An Engagement Model Based on User Interest and QoS in Video Streaming Systems

Table 1

Inference methods of Baseline II.

Gmean	the global average of all users’ interest levels in the training sessions.
Uavg/Iavg	the average of the interest level of the active user/the active video.
UIavg	the geometric mean of the active user’s and the active video’s average interest levels.
KNN	the average of the interest of the active user’s K nearest neighbors who have the most similar interest in other videos with her.