arXiv AI

Proxy reliance in large language model decisions is uncalibrated to predictive evidence

arXiv AI
Sep 2

Medical Causal Hypothesis Verification with Large Language Models

The paper "Medical Causal Hypothesis Verification with Large Language Models" reports a small-scale study evaluating eight LLMs on 17 medical causal hypotheses. The authors introduce an evaluation framework and annotate 1,067 evidence points across six criteria, using nine metrics to assess performance. Results show that while LLMs have strong recall, they frequently fail to provide valid scientific articles, evidence, or reject unsupported hypotheses, revealing a critical limitation for their use in healthcare.

By Safiyyah Ahmed, Abrar Ansari, Md Aminul Islam, Elena Zheleva
arXiv AI
Aug 26

From Causal Plausibility to Causal Reliability: Evaluating LLMs as Calibrated Direct Causal-Edge Classifiers

The study evaluates 12 instruction‑tuned open‑weight LLMs on six causal‑graph benchmarks, testing five prompting strategies and four confidence sources. Findings show that LLMs tend to over‑predict edges, misclassify indirect or reversed edges as direct, and exhibit high over‑confidence, while conventional confidence estimates are unreliable and agreement signals offer limited improvement. The results suggest LLMs should be used as externally validated soft causal priors rather than definitive causal‑structure evidence.

By Amit Kumar, Elnur Adl Zarabi, Suranjana Trivedy, Zhiqian Chen, Lei Zhang, Kaiqun Fu, Taoran Ji
arXiv Machine Learning
Sep 14

Aligning Language Models with Observational Data: Opportunities and Risks from a Causal Perspective

The paper discusses how large language models (LLMs) can be fine‑tuned with observational data to improve alignment with human preferences and business goals. It highlights that directly using such data can cause models to learn spurious correlations, and introduces DeconfoundLM, a method that removes known confounders from reward signals. Experiments show that DeconfoundLM better recovers causal relationships and outperforms baseline methods by over 16% in objective score when confounding is present.

By Erfan Loghmani
arXiv AI
Sep 16

Beyond the Name: Demographic Leakage in De-Identified R\'esum\'es and Evaluation Artifacts in LLM Bias Audits

The paper examines whether removing declared language fields from de‑identified résumés eliminates demographic leakage in large language models. By keeping language attributes identical and varying only unstructured prose across five ethnocultural groups and three cue‑salience levels, the authors find that non‑language text still allows target‑group recovery (average 0.757, reaching 1.000 under high salience). They also show that evaluation design—such as allowing or forbidding ties—dramatically affects LLM‑as‑a‑judge outcomes, underscoring the importance of evaluation protocol in bias audits.

By Qiangju Chen, Yang Xiao
arXiv Machine Learning
2d ago

Where's the Indirect Evidence? Investigating Grammatical Generalization with Influence Functions

The paper investigates indirect evidence in language models by applying influence functions to identify training sentences that affect predictions on 15 grammatical phenomena from BLiMP. After filtering out direct evidence, the authors select the 60,000 most influential remaining sentences and show that removing them significantly degrades held‑out accuracy, more so than random removal. They further analyze the characteristics of this indirect evidence and demonstrate that clustering phenomena based on shared indirect evidence recovers known linguistic categories.

By William Dai, Zhenghao Herbert Zhou, Maya Viswanathan, Robert Frank
arXiv AI
Sep 16

TAME: Token Attribution and Masking for Emergent misalignment

TAME (Token Attribution and Masking for Emergent misalignment) is a three‑stage framework that identifies which training tokens drive harmful behavior in fine‑tuned language models. It first scores tokens by how much fine‑tuning increases their likelihood, then characterizes patterns among high‑attribution tokens, and finally validates them by masking during training. Experiments on Llama and Qwen show that masking the top‑attribution tokens reduces emergent misalignment by 23‑ to 36‑fold, while random masking has no effect.

By Md Rayhanul Masud, Md Rizwan Parvez
arXiv Machine Learning
Jul 7

Faithfulness to Refusal: A Causal Audit of Neuron Selectors

arXiv:2607. 05355v1 Announce Type: cross Abstract: Attribution scores increasingly identify which neuron rows of a language model matter for applications such as pruning, interpretability, and editing for safety, yet whether they identify causally important rows is rarely tested directly.

By Ananth Eswar, Pratinav Seth, Utsav Avaiya, Vinay Kumar Sankarapu