融入用户风险偏好的三支协同过滤推荐模型

黄树添, 胡诗琳, 卜祥智, 李华雄, 刘久兵

Three⁃way collaborative filtering recommendation model integrating user risk preferences

Shutian Huang, Shilin Hu, Xiangzhi Bu, Huaxiong Li, Jiubing Liu

表8 固定

λ_{N P}

时推荐覆盖率的比较

Table 8 Recommendation generality with fixed

λ_{N P}

$(λ_{R N}, λ_{N P})$	$λ_{B R} = λ_{B N} = 0.35$		$λ_{B R} = λ_{B N} = 0.25$		$λ_{B R} = λ_{B N} = 0.15$
$(λ_{R N}, λ_{N P})$	M_CF	P_CF	M_CF	P_CF	M_CF	P_CF
$(1.2,0.8)$	0.468	0.570	0.204	0.333	0.064	0.193
$(1.0,0.8)$	0.614	0.658	0.290	0.381	0.089	0.214
$(0.8,0.8)$	0.813	0.807	0.443	0.475	0.142	0.247
$(0.6,0.8)$	—	—	0.691	0.646	0.265	0.318
$(0.4,0.8)$	—	—	0.969	0.949	0.571	0.512