Nishant Mishra

Asked: December 14, 2025In: Deep Learning

Why does my Transformer’s training loss decrease but translation quality stays poor?

The training loss drops steadily during fine-tuning.But the translated sentences are grammatically wrong.BLEU and other quality metrics do not improve.It feels like the model is optimizing the wrong thing.

Asked: November 22, 2025In: Deep Learning

Why does my reinforcement learning agent behave unpredictably in real environments?

Nishant MishraBegginer

The agent performs well in simulation.When deployed in the real world, it makes strange decisions.The physics is slightly different.Small changes lead to big failures.

Asked: September 30, 2025In: Deep Learning

Why does my image classifier have very high training accuracy but terrible test accuracy?

Nishant MishraBegginer

My CNN reaches over 95% accuracy on the training set.But on the test set it drops below 40%.The data comes from the same source.I feel the model is memorizing instead of learning.

Asked: July 14, 2025In: Deep Learning

Why does my vision model fail when lighting conditions change?

Nishant MishraBegginer

My image classifier performs very well on bright daylight photos.When images are darker or taken indoors, accuracy drops sharply.The objects are still the same.Only the lighting seems different.

Asked: March 14, 2025In: Deep Learning

Why does my speech recognition model work well in quiet rooms but fail in noisy environments?

Nishant MishraBegginer

My speech-to-text model produces accurate transcripts when tested in a quiet office.However, when I try to use it in public places, accuracy drops sharply.Background noise causes words to be skipped or misheard.The model feels fragile outside controlled ...