推荐大模型来了？OneRec论文解读：端到端训练如何同时吃掉效果与成本

Core Viewpoint - The article discusses the transformation of recommendation systems through the integration of large language models (LLMs), highlighting the introduction of the "OneRec" system by Kuaishou, which aims to enhance efficiency and effectiveness in recommendation processes [2][35]. Group 1: Challenges in Traditional Recommendation Systems - Traditional recommendation systems face significant challenges, including low computational efficiency, conflicting optimization objectives, and an inability to leverage the latest AI advancements [5]. - For instance, Kuaishou's SIM model shows a Model FLOPs Utilization (MFU) of only 4.6%/11.2%, which is significantly lower than LLMs that achieve 40%-50% [5][28]. Group 2: Introduction of OneRec - OneRec is an end-to-end generative recommendation system that utilizes an Encoder-Decoder architecture to model user behavior and enhance recommendation accuracy [6][11]. - The system has demonstrated a tenfold increase in effective computational capacity and improved MFU to 23.7%/28.8%, significantly reducing operational costs to just 10.6% of traditional methods [8][31]. Group 3: Performance Improvements - OneRec has shown substantial performance improvements in user engagement metrics, achieving a 0.54%/1.24% increase in app usage duration and a 0.05%/0.08% growth in the 7-day user lifecycle (LT7) [33]. - In local life service scenarios, OneRec has driven a 21.01% increase in GMV and an 18.58% rise in the number of purchasing users [34]. Group 4: Technical Innovations - The system employs a multi-modal fusion approach, integrating various data types such as video titles, tags, and user behavior to enhance recommendation quality [14]. - OneRec's architecture allows for significant computational optimizations, including a 92% reduction in the number of key operators, which enhances overall efficiency [27][28]. Group 5: Future Directions - Kuaishou's technical team identifies areas for further improvement, including enhancing inference capabilities, developing a more integrated multi-modal architecture, and refining the reward system to better align with user preferences [38].