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Transformer grokking delay linked to decoder bottleneck, study finds

A new research paper explores the phenomenon of 'grokking' in transformers, where models abruptly generalize after a long delay during training on algorithmic tasks. The study suggests this delay stems from limited access to learned structures rather than an inability to acquire them. By analyzing one-step Collatz prediction, researchers found that while encoders quickly learn relevant structures, the decoder bottleneck prolongs the generalization phase. Interventions like transplanting trained encoders or freezing encoders and retraining decoders significantly accelerated learning and improved accuracy, with numeral representation also playing a crucial role. AI

IMPACT Provides insights into transformer learning dynamics, potentially informing future model architectures and training strategies for improved efficiency.

RANK_REASON Research paper detailing findings on transformer model behavior. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.AI →

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Transformer grokking delay linked to decoder bottleneck, study finds

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Research paper detailing findings on transformer model behavior. [lever_c_demoted from research: ic=1 ai=1.0]
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COVERAGE [1]

  1. arXiv cs.AI TIER_1 English(EN) · Laura Gomezjurado Gonzalez ·

    The Long Delay to Arithmetic Generalization: When Learned Representations Outrun Behavior

    arXiv:2604.13082v2 Announce Type: replace-cross Abstract: Grokking in transformers trained on algorithmic tasks is characterized by a long delay between training-set fit and abrupt generalization, but the source of that delay remains poorly understood. In encoder-decoder arithmet…