Search Results for author: Alejandro Lopez-Lira

Found 12 papers, 6 papers with code

The Memorization Problem: Can We Trust LLMs' Economic Forecasts?

no code implementations20 Apr 2025 Alejandro Lopez-Lira, Yuehua Tang, Mingyin Zhu

Large language models (LLMs) cannot be trusted for economic forecasts during periods covered by their training data.

Memorization

Can Large Language Models Trade? Testing Financial Theories with LLM Agents in Market Simulations

no code implementations15 Apr 2025 Alejandro Lopez-Lira

This paper presents a realistic simulated stock market where large language models (LLMs) act as heterogeneous competing trading agents.

Bridging Language Models and Financial Analysis

no code implementations14 Mar 2025 Alejandro Lopez-Lira, Jihoon Kwon, Sangwoon Yoon, Jy-yong Sohn, Chanyeol Choi

The rapid advancements in Large Language Models (LLMs) have unlocked transformative possibilities in natural language processing, particularly within the financial sector.

Financial Analysis

No Language is an Island: Unifying Chinese and English in Financial Large Language Models, Instruction Data, and Benchmarks

2 code implementations10 Mar 2024 Gang Hu, Ke Qin, Chenhan Yuan, Min Peng, Alejandro Lopez-Lira, Benyou Wang, Sophia Ananiadou, Jimin Huang, Qianqian Xie

While the progression of Large Language Models (LLMs) has notably propelled financial analysis, their application has largely been confined to singular language realms, leaving untapped the potential of bilingual Chinese-English capacity.

Financial Analysis

FinBen: A Holistic Financial Benchmark for Large Language Models

2 code implementations20 Feb 2024 Qianqian Xie, Weiguang Han, Zhengyu Chen, Ruoyu Xiang, Xiao Zhang, Yueru He, Mengxi Xiao, Dong Li, Yongfu Dai, Duanyu Feng, Yijing Xu, Haoqiang Kang, Ziyan Kuang, Chenhan Yuan, Kailai Yang, Zheheng Luo, Tianlin Zhang, Zhiwei Liu, Guojun Xiong, Zhiyang Deng, Yuechen Jiang, Zhiyuan Yao, Haohang Li, Yangyang Yu, Gang Hu, Jiajia Huang, Xiao-Yang Liu, Alejandro Lopez-Lira, Benyou Wang, Yanzhao Lai, Hao Wang, Min Peng, Sophia Ananiadou, Jimin Huang

Our evaluation of 15 representative LLMs, including GPT-4, ChatGPT, and the latest Gemini, reveals several key findings: While LLMs excel in IE and textual analysis, they struggle with advanced reasoning and complex tasks like text generation and forecasting.

Question Answering RAG +2

Dólares or Dollars? Unraveling the Bilingual Prowess of Financial LLMs Between Spanish and English

1 code implementation12 Feb 2024 Xiao Zhang, Ruoyu Xiang, Chenhan Yuan, Duanyu Feng, Weiguang Han, Alejandro Lopez-Lira, Xiao-Yang Liu, Sophia Ananiadou, Min Peng, Jimin Huang, Qianqian Xie

We evaluate our model and existing LLMs using FLARE-ES, the first comprehensive bilingual evaluation benchmark with 21 datasets covering 9 tasks.

Empowering Many, Biasing a Few: Generalist Credit Scoring through Large Language Models

1 code implementation1 Oct 2023 Duanyu Feng, Yongfu Dai, Jimin Huang, Yifang Zhang, Qianqian Xie, Weiguang Han, Zhengyu Chen, Alejandro Lopez-Lira, Hao Wang

We then propose the first Credit and Risk Assessment Large Language Model (CALM) by instruction tuning, tailored to the nuanced demands of various financial risk assessment tasks.

Decision Making Language Modelling +1

PIXIU: A Large Language Model, Instruction Data and Evaluation Benchmark for Finance

2 code implementations8 Jun 2023 Qianqian Xie, Weiguang Han, Xiao Zhang, Yanzhao Lai, Min Peng, Alejandro Lopez-Lira, Jimin Huang

This paper introduces PIXIU, a comprehensive framework including the first financial LLM based on fine-tuning LLaMA with instruction data, the first instruction data with 136K data samples to support the fine-tuning, and an evaluation benchmark with 5 tasks and 9 datasets.

Conversational Question Answering Language Modeling +6

Can ChatGPT Forecast Stock Price Movements? Return Predictability and Large Language Models

no code implementations15 Apr 2023 Alejandro Lopez-Lira, Yuehua Tang

We document the capability of large language models (LLMs) like ChatGPT to predict stock price movements using news headlines, even without direct financial training.

Decision Making Sentiment Analysis

Does Peer-Reviewed Research Help Predict Stock Returns?

1 code implementation20 Dec 2022 Andrew Y. Chen, Alejandro Lopez-Lira, Tom Zimmermann

Data mining generates other features of economic research including the rise in returns as original sample periods end and the speed of post-sample decay.

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