With the popularity of large language models and their high-quality text generation capabilities, researchers are using them as auxiliary tools for text summary writing. Although summaries generated by these large language models are smooth and capture key information sufficiently, the quality of their output depends on the prompt, and the generated text is somewhat procedural to a certain extent. We construct LecSumm to verify whether language models truly capture human writing preferences, in which we recruit 200 college students to write summaries for lecture notes on ten different machine-learning topics and analyze writing preferences in real-world human summaries through the dimensions of length, content depth, tone & style, and summary format. We define the method of capturing human writing preferences by language models as finetuning pre-trained models with data and designing prompts to optimize the output of large language models. The results of translating the analyzed human writing preferences into prompts and conducting experiments show that both models still fail to capture human writing preferences effectively. Our LecSumm dataset brings new challenges to finetuned and prompt-based large language models on the task of human-centered text summarization.

Self-disclosure can provide psychological comfort and social support, but it also carries the risk of unintentionally revealing sensitive information, leading to serious privacy concerns. Research on self-disclosure in Chinese multimodal contexts remains limited, lacking high-quality corpora, analysis, and methods for detection. This work focuses on self-disclosure behaviors on Chinese multimodal social media platforms and constructs a high-quality text-image corpus to address this critical data gap. We systematically analyze the distribution of self-disclosure types, modality preferences, and their relationship with user intent, uncovering expressive patterns unique to the Chinese multimodal context. We also fine-tune five multimodal large language models to enhance self-disclosure detection in multimodal scenarios. Among these models, the Qwen2.5-omni-7B achieved a strong performance, with a partial span F1 score of 88.2%. This study provides a novel research perspective on multimodal self-disclosure in the Chinese context.