[KongchangAI]
Model

PLUG

A novel RNN architecture that replaces traditional exponential decay with polynomial decay driven by harmonic numbers, addressing the vanishing gradient problem in long-sequence modeling. It operates without an attention mechanism and supports FFT-accelerated computation.

Timeline (last 90 days)

Sep 11

A developer published an open-source project named novel-rnn-architectures on Reddit and GitHub, proposing two novel RNN architectures called PLUG and ILRM.

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Sep 11

The core objective of PLUG and ILRM is to solve the vanishing gradient problem in RNN long-sequence modeling without relying on attention modules.

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Sep 11

The project feeds a deterministic, normalized inverse-lag history vector P_t into the recurrent unit, weighted by harmonic numbers, causing historical information to decay at a rate of 1/k.

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Sep 11

PLUG and ILRM were trained only on 16–64 step delays, successfully extrapolating to 4096 steps, achieving 100% accuracy on a one-bit information retention task, while the baseline standard GRU degraded to random-guess level.

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Sep 11

On 1024-step sequences, the average gradient of the initial token for PLUG and ILRM remains stably at around the 10⁻⁴ order of magnitude, while the standard GRU gradient drops as low as approximately 10⁻¹⁴⁵, resulting in numerical underflow.

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