Virtual influencers~(VIs) -- digitally constructed social-media personas -- are becoming increasingly visible in online culture, marketing, and identity formation. Yet it remains unclear whether audiences respond to them through the same discourse patterns used for human influencers~(HIs), or whether virtuality produces distinctive modes of reaction. Existing studies often rely on surveys, engagement statistics, or marginal sentiment distributions, which reveal what audiences say but not how affective, topical, and psycholinguistic signals are jointly organised. We introduce a symbolic-semantic framework for analysing audience discourse around virtual and human influencers. The symbolic layer uses Formal Concept Analysis and association rule mining to extract closed co-occurrence structures from sentiment labels, topic tags, and Big Five psycholinguistic cues. The semantic layer renders these formal concepts as natural-language descriptions, embeds them with MiniLM, and compares their geometry across VI and HI audiences. Applied to 69,498 YouTube comments from three matched VI-HI influencer pairs, our analysis shows that HI discourse is organised around a compact, stability-centred pattern in which low neuroticism anchors positive sentiment, whereas VI discourse supports multiple discourse regimes. VI concepts are also more semantically dispersed than HI concepts, while both groups show strong symbolic-semantic alignment between closed-set structure and embedding geometry. Finally, VI discourse contains a distinct artificial-identity region and a higher concentration of negative sentiment in sensitive topics such as mental health, body image, and artificial identity. These findings suggest that virtuality reshapes not only the sentiment of audience reactions, but also the symbolic and semantic organisation of online social discourse.

翻译：虚拟影响者（VI）——数字化构建的社交媒体人格——在网络文化、营销和身份形成中日益显著。然而，尚不明确受众是否通过用于人类影响者（HI）的相同话语模式回应他们，抑或虚拟性是否产生了独特的反应模式。现有研究常依赖调查、参与度统计或边缘情感分布，这些揭示了受众的言论内容，却未阐明情感、主题和心理语言学信号如何共同组织。我们引入一个符号-语义框架来分析围绕虚拟与人类影响者的受众话语。符号层采用形式概念分析和关联规则挖掘，从情感标签、主题标签和大五心理语言学线索中提取封闭共现结构。语义层将这些形式概念呈现为自然语言描述，使用MiniLM进行嵌入，并比较VI与HI受众间概念的几何结构。应用于来自三组匹配的VI-HI影响者对的69,498条YouTube评论后，我们的分析表明，HI话语围绕一个紧凑、以稳定性为中心的模式组织，其中低神经质锚定积极情感，而VI话语支持多种话语体制。VI概念在语义上也比HI概念更分散，同时两组均表现出封闭集结构与嵌入几何之间的强烈符号-语义对齐。最后，VI话语包含一个独特的人工身份区域，并在心理健康、身体形象和人工身份等敏感话题中呈现更高的消极情感集中度。这些发现表明，虚拟性不仅重塑了受众反应的情感，也重塑了在线社交话语的符号与语义组织。