Position of Uncertainty: A Cross-Linguistic Study of Positional Bias in Large Language Models
Menschikov Mikhail, Alexander Kharitonov, Maiia Kotyga, Vadim Porvatov, Anna Zhukovskaya, David Kagramanyan, Egor Shvetsov, Evgeny Burnaev
2025-05-26
Summary
This paper talks about how large language models, or LLMs, can be influenced by where words or phrases appear in a sentence, and how this 'positional bias' shows up in different languages.
What's the problem?
The problem is that these AI models don't always treat every part of a sentence equally, and their understanding can change depending on where information is placed. This can mess with how well the models understand grammar, answer questions, or follow instructions, especially when working with different languages.
What's the solution?
The researchers studied how this positional bias affects the models by testing them in multiple languages and situations. They found that when you try to give the model clear instructions about where to focus, it can actually make the model less accurate, showing that positional bias is a tricky issue.
Why it matters?
This is important because it helps us understand the limits of language models and how they might misunderstand or make mistakes just because of word order, which is key for making AI better at understanding and using language in real-world situations.
Abstract
LLMs display positional bias across different languages, which affects model uncertainty, syntax, and prompting, revealing that explicit positional guidance can reduce accuracy.