Improving Friend Recommendation for Online Learning with Fine-Grained Evolving Interest

Abstract

Friend recommendation plays a key role in promoting user experience in online social networks (OSNs). However, existing studies usually neglect users' fine-grained interest as well as the evolving feature of interest, which may cause unsuitable recommendation. In particular, some OSNs, such as the online learning community, even have little work on friend recommendation. To this end, we strive to improve friend recommendation with fine-grained evolving interest in this paper. We take the online learning community as an application scenario, which is a special type of OSNs for people to learn courses online. Learning partners can help improve learners' learning effect and improve the attractiveness of platforms. We propose a learning partner recommendation framework based on the evolution of fine-grained learning interest (LPRF-E for short). We extract a sequence of learning interest tags that changes over time. Then, we explore the time feature to predict evolving learning interest. Next, we recommend learning partners by fine-grained interest similarity. We also refine the learning partner recommendation framework with users' social influence (denoted as LPRF-F for differentiation). Extensive experiments on two real datasets crawled from Chinese University MOOC and Douban Book validate that the proposed LPRF-E and LPRF-F models achieve a high accuracy (i.e., approximate 50% improvements on the precision and the recall) and can recommend learning partners with high quality (e.g., more experienced and helpful). Supplementary Information The online version contains supplementary material available at 10.1007/s11390-021-2124-z.

Research on Joint Recommendation Algorithm for Knowledge Concepts and Learning Partners Based on Improved Multi-Gate Mixture-of-Experts

“…Kang et al [17] proposed an Evaluation Latent Delicacy Allocation (Evaluation-LDA) algorithm to cluster learners with similar learning interests based on constructing learner document datasets, calculating learner similarity, and modelling friend topics as a way to help students in online education recommend suitable learning partners. Shao et al [18] proposed a learning partner recommendation algorithm that is based on the evolution of learning interests and recommends suitable learning partners for students through interest similarity. The above study calculates the similarity between students through partial interaction information and interest information to recommend appropriate learning partners without considering the integrity of heterogeneous data and ignoring the importance of student-student interaction information.…”