专利文本是技术创新的核心构建要素,对文本内容进行主题分析有助于厘清技术主题分布及演变趋势。以2018~2022年间知网纺织面料制备技术专利为研究对象,利用命名实体识别进行研究,以提取物体类实体作为专利文本内容分析的依据,按年划分时间窗口,使用困惑度–主体方差得到最优主题数。通过分析技术主题内容演变过程总结得到纺织面料制备的创新模式。通过分析主题内容演变过程,将其归纳为面料原料、面料制备工艺和面料特性三组技术元素,给出进一步面料制备的开发建议。为了克服主题建模中难以准确快速地选定词簇表示主题的难题,利用命名实体识别技术简化技术术语抽取工作,使用ERNIE3.0知识增强预训练模型快速得到具备强概括能力的技术术语集合。Patent text is the core building element of technological innovation, and thematic analysis of text content is helpful to clarify the distribution and evolution trend of technological themes. Taking CNKI textile fabric preparation technology patents from 2018 to 2022 as the research object, Named-entity recognition was used for research, and object-like entities were extracted as the basis for patent text content analysis. Time windows were divided by year, and the optimal number of topics was obtained using Perplexity subject variance. Summarize the innovative mode of textile fabric preparation by analyzing the evolution process of technical theme content. By analyzing the evolution process of the theme content, it is summarized into three technical elements: fabric raw materials, fabric preparation process, and fabric characteristics, and further development suggestions for fabric preparation are provided. In order to overcome the difficulty of accurately and quickly selecting word clusters to represent topics in topic modeling, Named-entity recognition technology is used to simplify the extraction of technical terms, and ERNIE3.0 knowledge enhanceme
随着自媒体平台逐渐成为商业广告投放的新阵地,Vlog以领域的高度垂直化和用户的高黏度为广告的精准投放带来新空间,但学术界对此领域的探索相对较滞后。本研究借鉴影响者营销的研究成果,引入准社会交往理论,以准社会交往关系为中介变量,产品感知质量不确定性为调节变量,探究Vlogger人际吸引力(外表吸引力、社交吸引力、任务吸引力)如何影响消费者的购买意愿。利用结构方程模型对问卷调查回收到的数据进行实证检验,结果发现:Vlogger人际吸引力会积极影响Vlogger和受众之间准社会交往关系的建立;Vlogger和受众形成的准社会交往关系会积极影响受众作为消费者对其推荐产品的购买意愿,且在Vlogger人际吸引力和受众购买意愿之间发挥中介作用;产品感知质量的不确定性作为调节变量会正向调节准社会交往关系与购买意愿之间的关系。As self-media platforms increasingly become new battlegrounds for commercial advertising, Vlogs offer a highly targeted and user-retentive space for precise ad placement, yet academic exploration in this area lags behind. Drawing on influencer marketing research and introducing the theory of parasocial interaction, this study examines how Vlogger interpersonal attractiveness (physical, social, and task attractiveness) affects consumer purchase intentions, with parasocial interaction as the mediating variable and perceived product quality uncertainty as the moderating variable. Using structural equation modeling to empirically test data collected from surveys, the results reveal that: Vlogger interpersonal attractiveness positively influences the establishment of parasocial interaction between Vloggers and their audience;the parasocial interaction formed positively affects the audience's purchase intentions towards the products recommended by the Vlogger, and plays a mediating role between Vlogger attractiveness and audience purchase intentions;perceived pr
