CTITF: A tensor factorization model with constrained bidirectional user trust and implicit feedback for context-aware recommender systems

• Hao LiShandong University of Science and Technology
• Jianjian ChenShandong University of Science and Technology
• Jianli ZhaoShandong University of Science and Technology
• Lutong YaoShandong University of Science and Technology
• Rumeng ZhangShandong University of Science and Technology
• Lu Yang
• Xiaoping Lu