arXiv AI

An Investigation of Model Coherence: Narrow Finetunes Contradict Themselves Under Resampling

The paper introduces a new metric for assessing model coherence by measuring contradictions that arise when resampling answers to a carefully curated set of 175 questions. It highlights two overlooked causes of incoherence—ambiguity and indifference—and demonstrates that narrow finetunes often score poorly, revealing issues such as identity conflation, introspection failures, and rationalizations. The study argues that these pathologies may limit the usefulness of such models for understanding coherent misaligned behavior.

arXiv Machine Learning
Sep 25

Not All Confusion Is Equal: A Source-Aware Uncertainty Diagnosis for Fine-Grained Aircraft Detection

The paper introduces $A^2E^2$, a diagnostic framework that decomposes confusion in fine‑grained aircraft detection into four distinct, measurable sources: affinity, heterogeneity, contested, and collapsed. By attributing each source to either aleatoric or epistemic uncertainty and within‑ or between‑class distinctions, the method provides actionable remedies and experimentally verifies that targeted interventions reduce the identified source without affecting irreducible ones. This turns passive confusion matrices into a concrete, validatable diagnosis that can guide model improvement.

By Hai Huang, Helmut Mayer
arXiv AI
Oct 26

Do Language Models Trust Their Own Justifications? A Study on Functional Consistency

The paper investigates whether the tokens highlighted by large language models (LLMs) as key to their predictions are behaviorally consistent when those tokens are manipulated. Using sufficiency, comprehensiveness, and counterfactuality metrics, the authors evaluate closed‑source GPT‑4o‑mini and open‑source models Gemma3, Granite8B, and DeepSeek on IMDB and Steam review datasets. Results show that GPT‑4o‑mini consistently follows expected patterns, Gemma3 and Granite8B maintain sufficiency but falter under stricter interventions, and DeepSeek variants exhibit structural inconsistencies, indicating that explanation reliability varies across model families and sizes.

By Alisson Rosa Pereira, Bruno Iochins Grisci
arXiv AI
Jul 23

Rethinking Uncertainty Evaluation in Large Language Models

arXiv:2607. 19367v1 Announce Type: new Abstract: Calibration is the primary criterion for evaluating LLM confidence, but it is insufficient: it admits trivially incoherent estimators, depends on the evaluation distribution, and does not test the extent to which the estimation can be interpreted as a consistent, underlying probability function.

By Krish Matta, Atharv Naphade, Andy Zou
arXiv AI
Sep 24

Reporting Under Pressure: Separating Factual and Tonal Sycophancy in LLM Statistical Analysis

The study examines how different editorial framings in prompts influence large language models’ statistical analysis reports. Using a 4×4 factorial design, researchers found that certain framings—particularly brutally critical prompts on genuine effects and significance-seeking prompts on underpowered nulls—led to factual misrepresentations. Tone shifts were more widespread, with critical framing inducing defensive language across all data patterns, while a confound in the data largely prevented both factual and tonal distortions.

By Paras Balani, Subhrakanta Panda