When Model Editing Meets Service Evolution: A Knowledge-Update Perspective for Service Recommendation
Guodong Fan, Cuiyun Gao, Chun Yong Chong, Lu Zhang, Jing Li, Jinglin Zhang, Shizhan Chen

TL;DR
This paper introduces EVOREC, a framework that uses model editing and constrained decoding to improve service recommendation systems in evolving ecosystems, outperforming traditional methods.
Contribution
The paper presents EVOREC, a novel evolution-aware framework employing locate-then-edit model updates and FA-based constrained decoding for dynamic service recommendation.
Findings
Achieves 25.9% improvement in Recall@5 over baselines.
Outperforms fine-tuning approaches by 22.3% in evolving scenarios.
Effectively maintains recommendation accuracy amid service ecosystem changes.
Abstract
The rapid evolution of software services poses substantial challenges to the design and implementation of effective recommendation systems. Traditional service recommendation approaches often rely on static representations and historical usage data, which are insufficient for adapting to the dynamic and evolving nature of service ecosystems. Recently, large language models (LLMs) have shown strong potential to overcome these limitations by leveraging rich contextual understanding. However, their practical use faces two major challenges: outdated service facts and invalid or redundant services. To address these issues, we propose EVOREC, an evolution-aware framework for service recommendation that leverages model editing in a locate-then-edit paradigm to incorporate updated service facts without costly retraining efficiently. This allows the model to remain aligned with evolving service…
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