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7 固定

λ_{N P}

时推荐成本的比较

Table 7 Recommendation cost 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
$(1.2,0.8)$	4582.4	4223.1	3526.9	3454.2	2234.3	2345.1
$(1.0,0.8)$	4504.5	4060.4	3471.7	3366.6	2208.8	2269.1
$(0.8,0.8)$	4353.9	3816.0	3417.1	3217.9	2164.2	2200.1
$(0.6,0.8)$	—	—	3306.0	3019.8	2111.6	2120.2
$(0.4,0.8)$	—	—	2753.3	2524.3	2048.8	1957.5