Jayson Shi JIA
Prof. Jayson Shi JIA
市场学
Associate Professor

3917 1611

KK 717

Publications
When Words Meet Visuals: How Content Composition Drives Social Media Engagement for Marketer-Generated Content

How does the balance between text and pictorial content in marketer-generated social media posts affect user engagement? The authors address this question by using computer vision and natural language processing tools to extract the visual and textual features of 34,610 organic brand posts from Facebook and Instagram. Using a Confounding-and-Cluster-Robust Causal Forests model, they test how the balance of text and picture affects social media engagement across content and visual contexts. Results show that posts with greater emphasis on overlay text over pictorial content tend to have fewer likes and comments. However, the performance of text-oriented posts improves if text is more centered, informative, emotionally positive, and congruent with the pictorial content, and if the picture contains fewer prominent objects or less information such as social cues. They quantify how incremental changes in such content composition affect social media engagement. These findings set forth evidence-based principles for optimizing text and picture balance in marketer-generated content (MGC) and provide actionable guidelines on whether, where, when, and how to present text on an image. This research highlights the potential for transforming content and media creation from an imprecise art form into an empirical science nested within a data-driven visual optimization framework.

从香港到曼哈顿:瑞幸等中国品牌“重写街景”背后的竞争与焦虑

港大经管学院市场学副教授贾轼教授认为,瑞幸能顺应全球经济环境,以性价比取胜,并且以折扣优惠为顾客带来“游戏化”的愉悦感,以及追求高效率,薄利润的营运方式,是它能于全球迅速扩张,蚕食星巴克海外份额的关键。

春节幸福感和疫情感知风险调查:来自机器学习的洞察

2023年刚结束的兔年春节内地民众过得怎样?调查显示,兔年春节期间,民众的幸福感平均值为5.47,介于“比较开心”与“开心”之间(1为最低值,7为最高值),“比较开心”以上人群占比为83.1%。

港中深團隊調研:央視春晚顯著提升春節幸福感

香港大學港大經管學院市場學副教授賈軾與其他學者組成的研究團隊,日前開展一項全國問卷調查,有關內地民眾的春節幸福感和疫情感知風險。

內地虎年春節:「就地過年」與「返鄉過年」一樣幸福

虎年春節前後,新冠疫情在内地多個城市再度爆發,「就地過年」也再次成為人們春節的選項。香港大學副教授賈軾、香港中文大學(深圳)教授賈建民、清華大學教授薛瀾和博士生袁韻等組成的研究團隊再次開展《春節幸福感與疫情應對行為》的全國性問卷調查。研究團隊於春節前、後通過內地的調研平臺Credamo對同一群體開展兩次調查,分別收集問卷3500份和3016份,樣本來自全國256個城市,年齡段以20-50歲有春節探親需要的群體為主,覆蓋各類社會群體與收入階層。

港中大(深圳)调查指虎年「就地过年」与「返乡过年」同样幸福

虎年春节前后,新冠疫情在多个城市再度爆发,「就地过年」也再次成为人们春节的选项。香港中文大学(深圳)研究团队开展的针对以20-50岁有春节探亲需要的群体的「春节幸福感与疫情应对行为」的全国性问卷调查显示,虎年 「就地过年」与「返乡探亲过年」民众的春节幸福感相同

消费者对动态视频行销的感知及其机制

在视频行销研究中,我们重点关注了速度线索这一视频行销常用的优化手段,即行销管理者、广告设计者通常会通过改变视频广告中代言人的动作速度来试图影响消费者对产品的感知。我们发现,视频广告中应用慢动作技术反而会降低行销手段的说服力,并且该效应的心理与认知机制是消费者所产生的意图性感知(Perception of intentionality),即消费者认为代言人的慢速的代言行为不是自发而是 “故意的”。该研究同时采用了认知科学的眼动分析(Eye-tracking)方法印证了该结论。综上,该研究发展和完善了消费者视觉处理与心理机制的理论,为研究消费者在新媒体环境下的行为机制提供新的视角。

How Can Technology Save The Arts?

The creative industries like art, film, and theater have suffered during the pandemic. But could digital transformation mean innovative, new business models save the arts? As industries that rely on delivering physical experiences to generate income, the coronavirus pandemic hit creative sectors like art, theater, and film worse than most.

网购新时代・下 │ 「先买后付」造就年轻人消费与负债双长?

小额商品也能分期付款、与商家、各个网购平台无缝衔接.....「BNPL」(Buy Now Pay Later,先买后付)这一新的消费模式可谓为新一代年轻人量身打造,让原本让人望而却步的产品只需轻点几下屏幕便「触手可及」。可是,这种新兴消费模式下,年轻人的销售习惯和财务将会如何受到影响?