Personalized Communication Skills for Agentic Recommender Systems

• URL: http://arxiv.org/abs/2608.08417v1
• Date: Sun, 09 Aug 2026 02:23:45 GMT
• Title: Personalized Communication Skills for Agentic Recommender Systems
• Abstract summary: AgentCom is a personalized communication skill framework for agentic recommender systems.<n>It organizes reusable communication skills into a shared why--what--how--who skill bank.<n>AgentCom consistently improves recommendation performance across traditional, social, and agentic recommenders.
• Score: 10.5457652520268
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Agentic recommender systems increasingly employ large language model-based UserAgents to evaluate candidate items through simulated feedback before recommendations are delivered. However, existing UserAgents typically reason in isolation based on limited personal histories, which may lead to perspective narrowing: the agent evaluates candidates from a local and incomplete view, overlooks relevant preference facets, and consequently produces inaccurate judgments. A natural way to alleviate this problem is to introduce other users as advisor agents, whose diverse histories provide complementary evidence that helps the target user reconsider overlooked preference signals. Nevertheless, a generic user-advisor communication process is insufficient, as different user decision states require different forms of external advice. Based on this insight, we propose AgentCom, a personalized communication skill framework for agentic recommender systems. AgentCom organizes reusable communication skills into a shared why--what--how--who skill bank: why identifies the decision deficiency that necessitates communication, what specifies the information task, how determines the advisor interaction protocol, and who retrieves advisors capable of executing that protocol. To make the shared skill bank personalized at use time and adaptive over time, AgentCom introduces two complementary mechanisms: personalized skill routing and failure-driven skill evolution. Personalized skill routing constructs a communication path by sequentially selecting suitable skills for each user and recommendation context. Failure-driven skill evolution learns from unsuccessful communication cases and enriches the shared bank with reusable skills that address previously uncovered communication needs. Experiments show that AgentCom consistently improves recommendation performance across traditional, social, and agentic recommenders.

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