Gemini Flash 3.8
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- Researchers fix precision bugs in Softmax and cross-entropy
A paper titled “A Fix for Softmax and Cross-Entropy” reports two floating-point defects in standard Softmax and cross-entropy implementations used by PyTorch, JAX, TensorFlow and other systems. The issues can prematurely zero the correct-class gradient in confident classifiers and leave residual gradients when a student model exactly matches a teacher during knowledge distillation. The proposed changes preserve the original mathematical definitions and avoid requiring higher floating-point precision, while experiments reported smoother training and improved stability in modular-arithmetic and distillation tasks.
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