Jin Xu
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2025
QuantAgents: Towards Multi-agent Financial System via Simulated Trading
Xiangyu Li | Yawen Zeng | Xiaofen Xing | Jin Xu | Xiangmin Xu
Findings of the Association for Computational Linguistics: EMNLP 2025
Xiangyu Li | Yawen Zeng | Xiaofen Xing | Jin Xu | Xiangmin Xu
Findings of the Association for Computational Linguistics: EMNLP 2025
In this paper, our objective is to develop a multi-agent financial system that incorporates simulated trading, a technique extensively utilized by financial professionals. While current LLM-based agent models demonstrate competitive performance, they still exhibit significant deviations from real-world fund companies. A critical distinction lies in the agents’ reliance on “post-reflection”, particularly in response to adverse outcomes, but lack a distinctly human capability: long-term prediction of future trends. Therefore, we introduce QuantAgents, a multi-agent system integrating simulated trading, to comprehensively evaluate various investment strategies and market scenarios without assuming actual risks. Specifically, QuantAgents comprises four agents: a simulated trading analyst, a risk control analyst, a market news analyst, and a manager, who collaborate through several meetings. Moreover, our system incentivizes agents to receive feedback on two fronts: performance in real-world markets and predictive accuracy in simulated trading. Extensive experiments demonstrate that our framework excels across all metrics, yielding an overall return of nearly 300% over the three years (https://quantagents.github.io).
2024
Identifying Factual Inconsistencies in Summaries: Grounding LLM Inference via Task Taxonomy
Liyan Xu | Zhenlin Su | Mo Yu | Jin Xu | Jinho D. Choi | Jie Zhou | Fei Liu
Findings of the Association for Computational Linguistics: EMNLP 2024
Liyan Xu | Zhenlin Su | Mo Yu | Jin Xu | Jinho D. Choi | Jie Zhou | Fei Liu
Findings of the Association for Computational Linguistics: EMNLP 2024
Factual inconsistencies pose a significant hurdle for the faithful summarization by generative models. While a major direction to enhance inconsistency detection is to derive stronger Natural Language Inference (NLI) models, we propose an orthogonal aspect that underscores the importance of incorporating task-specific taxonomy into the inference. To this end, we consolidate key error types of inconsistent facts in summaries, and incorporate them to facilitate both the zero-shot and supervised paradigms of LLMs. Extensive experiments on ten datasets of five distinct domains suggest that, zero-shot LLM inference could benefit from the explicit solution space depicted by the error type taxonomy, and achieves state-of-the-art performance overall, surpassing specialized non-LLM baselines, as well as recent LLM baselines. We further distill models that fuse the taxonomy into parameters through our designed prompt completions and supervised training strategies, efficiently substituting state-of-the-art zero-shot inference with much larger LLMs.
VideoCoT: A Video Chain-of-Thought Dataset with Active Annotation Tool
Yan Wang | Yawen Zeng | Jingsheng Zheng | Xiaofen Xing | Jin Xu | Xiangmin Xu
Proceedings of the 3rd Workshop on Advances in Language and Vision Research (ALVR)
Yan Wang | Yawen Zeng | Jingsheng Zheng | Xiaofen Xing | Jin Xu | Xiangmin Xu
Proceedings of the 3rd Workshop on Advances in Language and Vision Research (ALVR)
Multimodal large language models (MLLMs) are flourishing, but mainly focus on images with less attention than videos, especially in sub-fields such as prompt engineering, video chain-of-though (CoT), and instruction tuning on videos. Therefore, we try to explore the collection of CoT datasets in videos to lead to video OpenQA and improve the reasoning ability of MLLMs. Unfortunately, making such video CoT datasets is not an easy task. Given that human annotation is too cumbersome and expensive, while machine-generated is not reliable due to the hallucination issue, we develop an automatic annotation tool that combines machine and human experts, under the active learning paradigm. Active learning is an interactive strategy between the model and human experts, in this way, the workload of human labeling can be reduced and the quality of the dataset can be guaranteed. With the help of the automatic annotation tool, we strive to contribute three datasets, namely VideoCoT, TopicQA, TopicCoT. Furthermore, we propose a simple but effective benchmark based on the collected datasets, which exploits CoT to maximize the complex reasoning capabilities of MLLMs. Extensive experiments demonstrate the effectiveness our solution, and we will release our source codes and datasets to facilitate the research community.