Junhao Chen


2024

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MMAD:Multi-modal Movie Audio Description
Xiaojun Ye | Junhao Chen | Xiang Li | Haidong Xin | Chao Li | Sheng Zhou | Jiajun Bu
Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024)

Audio Description (AD) aims to generate narrations of information that is not accessible through unimodal hearing in movies to aid the visually impaired in following film narratives. Current solutions rely heavily on manual work, resulting in high costs and limited scalability. While automatic methods have been introduced, they often yield descriptions that are sparse and omit key details. ddressing these challenges, we propose a novel automated pipeline, the Multi-modal Movie Audio Description (MMAD). MMAD harnesses the capabilities of three key modules as well as the power of Llama2 to augment the depth and breadth of the generated descriptions. Specifically, first, we propose an Audio-aware Feature Enhancing Module to provide the model with multi-modal perception capabilities, enriching the background descriptions with a more comprehensive understanding of the environmental features. Second, we propose an Actor-tracking-aware Story Linking Module to aid in the generation of contextual and character-centric descriptions, thereby enhancing the richness of character depictions. Third, we incorporate a Subtitled Movie Clip Contextual Alignment Module, supplying semantic information about various time periods throughout the movie, which facilitates the consideration of the full movie narrative context when describing silent segments, thereby enhancing the richness of the descriptions. Experiments on widely used datasets convincingly demonstrates that MMAD significantly surpasses existing strong baselines in performance, establishing a new state-of-the-art in the field. Our code will be released at https://github.com/Daria8976/MMAD.

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Bench: Extending Long Context Evaluation Beyond 100K Tokens
Xinrong Zhang | Yingfa Chen | Shengding Hu | Zihang Xu | Junhao Chen | Moo Hao | Xu Han | Zhen Thai | Shuo Wang | Zhiyuan Liu | Maosong Sun
Proceedings of the 62nd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)

Processing and reasoning over long contexts is crucial for many practical applications of Large Language Models (LLMs), such as document comprehension and agent construction. Despite recent strides in making LLMs process contexts with more than 100K tokens, there is currently a lack of a standardized benchmark to evaluate this long-context capability. Existing public benchmarks typically focus on contexts around 10K tokens, limiting the assessment and comparison of LLMs in processing longer contexts. In this paper, we propose , the first LLM benchmark featuring an average data length surpassing 100K tokens. comprises synthetic and realistic tasks spanning diverse domains in English and Chinese. The tasks in are designed to require an understanding of long dependencies in contexts and make simply retrieving a limited number of passages from contexts not sufficient for these tasks. Based on , we evaluate several state-of-the-art LLMs tailored for processing long contexts. The experimental results indicate that existing long-context LLMs still require significant advancements to process 100K+ contexts effectively. Furthermore, we present three intriguing analyses regarding the behavior of LLMs processing long context. Our code and data is released.

2023

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ZhuJiu: A Multi-dimensional, Multi-faceted Chinese Benchmark for Large Language Models
Baoli Zhang | Haining Xie | Pengfan Du | Junhao Chen | Pengfei Cao | Yubo Chen | Shengping Liu | Kang Liu | Jun Zhao
Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing: System Demonstrations

The unprecedented performance of LLMs requires comprehensive and accurate evaluation. We argue that for LLMs evaluation, benchmarks need to be comprehensive and systematic. To this end, we propose the Zhujiu benchmark, which has the following strengths: (1) Multi-dimensional ability coverage: We comprehensively evaluate LLMs across 7 ability dimensions covering 51 tasks. Especially, we also propose a new benchmark that focus on knowledge ability of LLMs. (2) Multi-faceted evaluation methods collaboration: We use 3 different yet complementary evaluation methods to comprehensively evaluate LLMs, which can ensure the authority and accuracy of the evaluation results. (3) Comprehensive Chinese benchmark: ZhuJiu is the pioneering benchmark that fully assesses LLMs in Chinese, while also providing equally robust evaluation abilities in English. (4) Avoiding potential data leakage: To avoid data leakage, we construct evaluation data specifically for 37 tasks. We evaluate 10 current mainstream LLMs, and conduct an in-depth discussion and analysis of their results. The ZhuJiu benchmark and open-participation leaderboard are publicly released at http://www.zhujiu-benchmark.com and we also provide a demo video at https://youtu.be/qypkJ89L1Ic.