arXiv AI

Knowledge Acquisition During Pre-training? Large Language Models Learn Better With Auxiliary Views

The paper investigates how large language models acquire knowledge during pre‑training, proposing that auxiliary views—reformulations of knowledge—are causally beneficial. Experiments show that repetition is essential, paraphrasing helps only at smaller batch sizes, and reallocating tokens from repetition to auxiliary views improves learning even for factual recall. The study also finds that the benefit of auxiliary views does not depend on the teacher model’s strength, identifies specific knowledge types that aid learning, and explores mechanistic effects via layer‑wise biases and compression.

arXiv Computation and Language
Sep 18

LMEnt: A Suite for Analyzing Knowledge in Language Models from Pretraining Data to Representations

LMEnt is a toolkit designed to study how language models acquire and represent world knowledge. It includes a richly annotated pretraining corpus, an improved entity-based retrieval method, and twelve pretrained models with numerous checkpoints. The suite enables controlled experiments linking entity mentions in training data to downstream knowledge performance, revealing how co-occurrence patterns influence learning and editing difficulty.

By Daniela Gottesman, Alon Gilae-Dotan, Ido Cohen, Yoav Gur-Arieh, Marius Mosbach, Ori Yoran, Mor Geva
arXiv AI
Sep 3

Task-Level Natural Language Priors as Learning Signals for Low-Resource LLM Training

Task-Level Natural Language Priors as Learning Signals for Low-Resource LLM Training proposes Prior-Guided Tuning (PGT), a training approach that treats natural-language priors as auxiliary learning signals rather than just input context. The method introduces Contrastive Prior Steering (CPS), which adds positive and negative prior-conditioned auxiliary losses while preserving the original supervised objective. Experiments on AmbiMath, Jigsaw, and MNLI/HANS demonstrate that CPS consistently outperforms plain and prompt fine-tuning, achieving high accuracy and significant gains with limited training data.

By Jian Gao, Xiao Zhang, Xun Zhu, Miao Li, Ji Wu
arXiv Computation and Language
Sep 4

LLMs Learn Better In-Context from Rules than from Examples

The paper investigates how large language models learn new tasks in-context, comparing rule-based instruction following to example-based few-shot prompting across five diverse tasks. Results show that models generally learn more reliably from rule descriptions than from examples alone, and adding more examples does not consistently improve performance. Instruction tuning further enhances rule-based learning while preserving example-based capabilities, with rule advantages being strongest for algebraic tasks and weaker for tasks requiring distributional sensitivity or parametric knowledge.

By Xiang Fu, Seungmin Cho, Yukyung Lee, Najoung Kim
arXiv AI
4d ago

CoEM: Empowering Long-Context Reasoning with Commit-on-Evidence Memory

CoEM introduces a Commit-on-Evidence Memory system that learns when to compress source evidence into compact memory facts while preserving potentially useful excerpts verbatim in a pending set. The system uses a learned policy to decide whether to promote, retain, or discard each pending excerpt as new context arrives, and a frozen verifier ensures only supported facts are committed. Reinforcement learning trains this policy with step-level evidence rewards and final answer rewards, leading to consistent improvements in long-context reasoning, achieving 10.4–11.4 F1 points over the strongest baseline on 6,400-document inputs.

By Jingguang Li, Yebo Wu, Zuyi Guo, Kailang Ma, Xianjie Dai, Han Zheng, Benwang Chen, Li Li, Can Rong, Heye Huang