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Hauptverfasser: Aljaafari, Nura, Carvalho, Danilo S., Freitas, André
Format: Preprint
Veröffentlicht: 2025
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Online-Zugang:https://arxiv.org/abs/2507.03668
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author Aljaafari, Nura
Carvalho, Danilo S.
Freitas, André
author_facet Aljaafari, Nura
Carvalho, Danilo S.
Freitas, André
contents Understanding when and how linguistic knowledge emerges during language model training remains a central challenge for interpretability. Most existing tools are post hoc, rely on scalar metrics, or require nontrivial integration effort, making comprehensive interpretability analysis difficult to deploy and maintain. We introduce TRACE, a modular toolkit for training and inference-time interpretability analysis of transformer models. It enables lightweight, in-training analysis of linguistic and representational signals, including features probing, intrinsic dimensionality, Hessian curvature, and output diagnostics. It integrates with ABSynth, a controllable synthetic corpus generator that provides structured annotations for precise evaluation of linguistic feature acquisition. Experiments with autoregressive transformers demonstrate that TRACE reveals developmental phenomena such as early syntactic emergence, delayed semantic acquisition, and representational compression, signals overlooked by traditional scalar metrics such as loss or accuracy. With minimal integration effort, the tool enables layer-wise diagnostics, convergence-based early stopping, and detection of structural errors, making transformer analysis interpretable, actionable, and reproducible.
format Preprint
id arxiv_https___arxiv_org_abs_2507_03668
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle TRACE: Training and Inference-Time Interpretability Analysis for Language Models
Aljaafari, Nura
Carvalho, Danilo S.
Freitas, André
Computation and Language
Understanding when and how linguistic knowledge emerges during language model training remains a central challenge for interpretability. Most existing tools are post hoc, rely on scalar metrics, or require nontrivial integration effort, making comprehensive interpretability analysis difficult to deploy and maintain. We introduce TRACE, a modular toolkit for training and inference-time interpretability analysis of transformer models. It enables lightweight, in-training analysis of linguistic and representational signals, including features probing, intrinsic dimensionality, Hessian curvature, and output diagnostics. It integrates with ABSynth, a controllable synthetic corpus generator that provides structured annotations for precise evaluation of linguistic feature acquisition. Experiments with autoregressive transformers demonstrate that TRACE reveals developmental phenomena such as early syntactic emergence, delayed semantic acquisition, and representational compression, signals overlooked by traditional scalar metrics such as loss or accuracy. With minimal integration effort, the tool enables layer-wise diagnostics, convergence-based early stopping, and detection of structural errors, making transformer analysis interpretable, actionable, and reproducible.
title TRACE: Training and Inference-Time Interpretability Analysis for Language Models
topic Computation and Language
url https://arxiv.org/abs/2507.03668