arXiv Machine Learning

LadderEdit: Edit-Level Residual Compression for Memory-Efficient Lifelong Editing of LLMs

LadderEdit is a method for memory‑efficient lifelong editing of large language models that compresses each LoRA adapter after acquisition. Each edit is initially stored as a low‑rank sketch and only promoted to higher rank if it fails to satisfy rewrite, generalization, and locality contracts on probe prompts. On benchmarks such as ZsRE, CounterFact, and WikiBigEdit, LadderEdit achieves the same performance as exact LoRA while using 5.2× less memory and handling up to 50,000 sequential edits.

arXiv Machine Learning
Aug 28

LowRankArena: A Standardized Evaluation Platform for SVD-Based LLM Compression

LowRankArena is a standardized evaluation platform for SVD‑based low‑rank compression of large language models, unifying task versions, compression budgets, comparison regimes, and inference measurements. It provides a reproducible pipeline with over 3 TiB of released compressed checkpoints, enabling consistent comparisons across methods. An audit of five representative SVD techniques using LowRankArena shows that prior reported gains are highly conditional, with performance leaders and tiers shifting across backbones and keep ratios, and that nominal low‑rank savings often yield limited end‑to‑end speedups.

By Zishan Shao, Lixun Zhang, Kangning Cui, Wenhao Wu, Jinhee Kim, Yixiao Wang, Ting Jiang, Hancheng Ye, Qinsi Wang, Fan Yang, Danyang Zhuo, Yiran Chen, Hai Li
arXiv AI
2d ago

Editing Large Language Models with Geometry-Aware Regularization

The paper introduces GEdit, a geometry-aware framework for editing large language models that leverages a Low-Rank Plus Diagonal factor model to capture the low-rank structure of Transformer FFN hidden representations. GEdit applies low‑rank regularization to protect core knowledge and adaptive regularization to adjust constraints based on the difficulty of each edit, allowing harder edits to succeed while preserving easier ones. Experiments on GPT2‑XL, GPT‑J, and LLaMA‑3‑8B with up to 10,000 continuous updates demonstrate that GEdit outperforms state‑of‑the‑art baselines in both editing success and knowledge preservation.

By Bingqing Liu, Wei Liu, Jun Wang, Xiaobo Sun, Yuhua Li, Ruixuan Li
arXiv AI
Sep 10

Diffs vs. Whole Files: An Empirical Comparison of Iterative Edit-Based and Direct Generation for Flutter/Dart Code Models

The paper compares two output regimes for code-editing language models: direct generation, where the model outputs the entire modified file, and iterative diff-based generation, where the model emits a sequence of localized edits. Experiments on Flutter/Dart tasks show that direct generation consistently outperforms diff-based generation across metrics such as compilation success, token efficiency, and quality judgments. However, diff-based generation can be competitive for short, spatially localized edits, particularly in refactoring and error-handling tasks with few edit steps.

By Andrej Andrejev
arXiv Machine Learning
Sep 17

When Edit Flows are Edit Jumps: replicating Edit Flows and EvoFlows

The paper introduces EditJumps, the first open implementation of the Edit Flows and EvoFlows framework for antibody lead optimization. EditJumps trains a single generalist antibody editor on 1.66 M homolog pairs to generate homolog‑like variants of a seed sequence, enabling zero‑shot editing of unseen leads without per‑family retraining. The authors demonstrate that both Edit Flows and EvoFlows operate by sequentially applying edits at learned rates in continuous time, and they highlight the importance of open code for reproducing generative biology results, noting that published evaluation metrics can be highly sensitive to reference sample size.

By Gabriel B\'en\'edict, Melanie Buechler, Gerard Riera-Sol\`a, Chlo\'e de Ancos, Yves Gaetan Nana Teukam, Moritz Freidank
arXiv Machine Learning
Aug 3

Overcoming the Weakest-Link Effect in LLM-Driven Program Optimization via Heterogeneous Edit Recombination

arXiv:2607. 28947v1 Announce Type: new Abstract: Large language models (LLMs) are increasingly used to solve complex problems by searching over program space, offering a general paradigm for scientific problems that can be naturally represented and solved as programs.

By Jingwen Fu, Zhen Liu, Yuhan Liu, He Zhang, Nanning Zheng
arXiv Computation and Language
Sep 23

MoM: Memory of Memory

arXiv:2609.25054v1 Announce Type: new Abstract: For a long-horizon LLM agent, the memory question is not what was once recorded but what \emph{currently holds}. Most designs answer it only indirectly...

By Bowen Qin, Yao Lu