VerbalValue: A Socially Intelligent Virtual Host for Sales-Driven Live Commerce
Yuyan Chen

TL;DR
VerbalValue is an AI virtual host designed for live commerce, enhancing sales through expert knowledge, emotional intelligence, and engaging responses, outperforming existing models in informativeness and correctness.
Contribution
It introduces a domain knowledge base, annotated interaction data, and fine-tunes a large language model for commercially effective, empathetic responses in live commerce settings.
Findings
Achieved 23% improvement in informativeness over baselines.
Achieved 18% improvement in factual correctness.
Demonstrated increased viewer engagement and tactfulness.
Abstract
A skilled live-commerce host is not merely a narrator, but a sales agent who converts viewer curiosity into purchase intent through expert product knowledge, emotionally intelligent response tactics, and entertainment that serves as a vehicle for product exposure. Yet no existing AI system replicates this: conversational recommenders treat recommendation as a terminal act, while general-purpose LLMs hallucinate product claims and default to generic promotional templates that fail to engage or persuade. We present VerbalValue, a sales-conversion-oriented virtual host that turns exceptional verbal ability into real commercial value, built on three contributions. First, we construct a domain knowledge base of product specifications and a curated sales terminology lexicon that anchor product-related responses in verified expertise. Second, we collect and annotate 1,475 live-commerce…
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