Recommending a sequence of activities for an ongoing case requires that the recommendations conform to the underlying business process and meet the performance goal of either completion time or process outcome. Existing work on next activity prediction can predict the future activity but cannot provide guarantees of the prediction being conformant or meeting the goal. Hence, we propose a goal-oriented next best activity recommendation. Our proposed framework uses a deep learning model to predict the next best activity and an estimated value of a goal given the activity. A reinforcement learning method explores the sequence of activities based on the estimates likely to meet one or more goals. We further address a real-world problem of multiple goals by introducing an additional reward function to balance the outcome of a recommended activity and satisfy the goal. We demonstrate the effectiveness of the proposed method on four real-world datasets with different characteristics. The results show that the recommendations from our proposed approach outperform in goal satisfaction and conformance compared to the existing state-of-the-art next best activity recommendation techniques.
A Simple Yet Effective Approach for Diversified Session-Based Recommendation
Shanghai University of Finance and Economics（上海财经大学）；Institute of High Performance Computing（高性能计算研究所）；Centre for Frontier AI Research, A*STAR（新加坡科技研究局前沿人工智能研究中心）；Nanyang Technological University（南洋理工大学）
Benchmarking Deep Neural Networks for Modern Recommendation Systems
Computer Science and Applied Mathematics Laboratory (LIMA) Faculty of Science and Technology（计算机科学与应用数学实验室（LIMA）理学院）；Faculty of Science and Technology, Chadli Bendjedid University（科学与技术学院，恰德利·本杰迪德大学）；School of Computer Science, University of Windsor（计算机科学学院，温莎大学）
A Scenario-Oriented Survey of Federated Recommender Systems: Techniques, Challenges, and Future Directions
School of Software Engineering, Xi’an Jiaotong University（西安交通大学软件工程学院）；City, University of London（伦敦城市大学）；Ministry of Education Key Laboratory for Intelligent Networks and Network Security, the School of Information and Communication Engineering, and SMILES LAB, Xi’an Jiaotong University（教育部智能网络与网络 security key laboratory、信息与通信工程学院及SMILES实验室，西安交通大学）
