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

Table 2

Estimation accuracy of user interest inference models and the improvement achieved by E-I algorithm on the baseline methods. The evaluation is conducted in the smooth sessions.

Methods	Baseline I	Baseline II					E-I algorithm
		Gmean	Uavg	Iavg	UIavg	KNN
RMSE	3.63	4.07	3.19	3.25	3.16	3.11	2.96
Improvement (%)	18.4	27.2	7.2	8.9	6.3	4.8	- -