increase pseudo-count to 1.0 and now there's no NaN in training
increase pseudo-count to 1.0 and now there's no NaN in training

PiperOrigin-RevId: 188229748

tensorflow/tensor2tensor,vthorsteinsson/tensor2tensor,vthorsteinsson/tensor2tensor,tensorflow/tensor2tensor,tensorflow/tensor2tensor,vthorsteinsson/tensor2tensor,vthorsteinsson/tensor2tensor,tensorflow/tensor2tensor,tensorflow/tensor2tensor