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9 固定

λ_{R N}

时推荐成本的比较

Table 9 Recommendation cost with fixed

λ_{R N}

$(λ_{R N}, λ_{N P})$	$λ_{B R} = λ_{B N} = 0.35$		$λ_{B R} = λ_{B N} = 0.25$		$λ_{B R} = λ_{B N} = 0.15$
$(λ_{R N}, λ_{N P})$	M_CF	P_CF	M_CF	P_CF	M_CF	P_CF
$(0.8,1.2)$	4603.7	4218.8	3456.0	3359.4	2177.2	2228.7
$(0.8,1.0)$	4541.7	4077.1	3446.2	3316.3	2171.7	2214.4
$(0.8,0.8)$	4353.9	3816.0	3417.1	3217.9	2164.2	2200.1
$(0.8,0.6)$	—	—	3286.9	3025.6	2153.1	2158.9
$(0.8,0.4)$	—	—	2644.2	2491.0	2095.9	2040.1