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LLM Pretraining with Continuous Concepts

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arxiv 2502.08524 v1 pith:32AGNVES submitted 2025-02-12 cs.LG cs.CL

classification cs.LGcs.CL
keywords cocomixcontinuoustokenconceptconceptsmodelnextprediction
verification ladder T0 review T1 audit T2 compute T3 formal
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Next token prediction has been the standard training objective used in large language model pretraining. Representations are learned as a result of optimizing for token-level perplexity. We propose Continuous Concept Mixing (CoCoMix), a novel pretraining framework that combines discrete next token prediction with continuous concepts. Specifically, CoCoMix predicts continuous concepts learned from a pretrained sparse autoencoder and mixes them into the model's hidden state by interleaving with token hidden representations. Through experiments on multiple benchmarks, including language modeling and downstream reasoning tasks, we show that CoCoMix is more sample efficient and consistently outperforms standard next token prediction, knowledge distillation and inserting pause tokens. We find that combining both concept learning and interleaving in an end-to-end framework is critical to performance gains. Furthermore, CoCoMix enhances interpretability and steerability by allowing direct inspection and modification of the predicted concept, offering a transparent way to guide the model's internal reasoning process.

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Cited by 7 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Final Checkpoints Are Not Enough: Analyzing Latent Reasoning Faithfulness Along Training Trajectories

    cs.LG 2026-07 conditional novelty 6.5 of 10

    Latent reasoning faithfulness is a property of training stage and answer format, not of architecture or the final checkpoint alone.

  2. NITP: Next Implicit Token Prediction for LLM Pre-training

    cs.CL 2026-05 unverdicted novelty 6.0 of 10

    NITP augments standard next-token prediction with implicit semantic prediction in representation space using shallow-layer self-supervision, reporting consistent downstream gains on 0.5B-9B models including 5.7% on MM...

  3. LaRe: Latent Refocusing for Multimodal Reasoning

    cs.CV 2025-11 reject novelty 6.0 of 10

    LaRe performs iterative visual refocusing in latent space and reports accuracy gains with fewer tokens, but its main experiments compare against baselines trained with less data.

  4. Towards Distributed Neural Architectures

    cs.LG 2025-06 conditional novelty 6.0 of 10

    A general routing framework lets each token take its own path through a network, matching dense baselines while enabling learned compute savings and interpretable path specialization.

  5. A foundation model with multi-variate parallel attention to generate neuronal activity

    cs.LG 2025-06 conditional novelty 6.0 of 10

    MVPFormer, a transformer with disentangled content, time, and channel attention, achieves expert-level zero-shot seizure detection on 50 unseen patients and near-SOTA results on speech decoding, alongside the largest ...

  6. The Latent Space: Foundation, Evolution, Mechanism, Ability, and Outlook

    cs.AI 2026-04 accept novelty 5.0 of 10

    A large survey organizes latent-space work in language-based models by foundation, evolution, four mechanisms, seven abilities, and open challenges.

  7. Implicit Reasoning in Large Language Models: A Comprehensive Survey

    cs.CL 2025-09 conditional novelty 5.0 of 10

    A survey organizing implicit (silent) reasoning in LLMs into three execution paradigms, plus evidence, benchmarks, and challenges.

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