Pitfalls in Evaluating Language Model Forecasters

Fuente: arXiv
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Main Authors: Paleka, Daniel, Goel, Shashwat, Geiping, Jonas, Tramèr, Florian
Format: Preprint
Published: 2025
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author Paleka, Daniel
Goel, Shashwat
Geiping, Jonas
Tramèr, Florian
author_facet Paleka, Daniel
Goel, Shashwat
Geiping, Jonas
Tramèr, Florian
contents Large language models (LLMs) have recently been applied to forecasting tasks, with some works claiming these systems match or exceed human performance. In this paper, we argue that, as a community, we should be careful about such conclusions as evaluating LLM forecasters presents unique challenges. We identify two broad categories of issues: (1) difficulty in trusting evaluation results due to many forms of temporal leakage, and (2) difficulty in extrapolating from evaluation performance to real-world forecasting. Through systematic analysis and concrete examples from prior work, we demonstrate how evaluation flaws can raise concerns about current and future performance claims. We argue that more rigorous evaluation methodologies are needed to confidently assess the forecasting abilities of LLMs.
format Preprint
id arxiv_https___arxiv_org_abs_2506_00723
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Pitfalls in Evaluating Language Model Forecasters
Paleka, Daniel
Goel, Shashwat
Geiping, Jonas
Tramèr, Florian
Machine Learning
Artificial Intelligence
Information Retrieval
Large language models (LLMs) have recently been applied to forecasting tasks, with some works claiming these systems match or exceed human performance. In this paper, we argue that, as a community, we should be careful about such conclusions as evaluating LLM forecasters presents unique challenges. We identify two broad categories of issues: (1) difficulty in trusting evaluation results due to many forms of temporal leakage, and (2) difficulty in extrapolating from evaluation performance to real-world forecasting. Through systematic analysis and concrete examples from prior work, we demonstrate how evaluation flaws can raise concerns about current and future performance claims. We argue that more rigorous evaluation methodologies are needed to confidently assess the forecasting abilities of LLMs.
title Pitfalls in Evaluating Language Model Forecasters
topic Machine Learning
Artificial Intelligence
Information Retrieval
url https://arxiv.org/abs/2506.00723