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2 代价损失矩阵

Table 2 Cost loss matrix

行动 状态 TP ¬TN aP λPP λPN aB λBP λBN aN λNP λNN