John Marston

Asked: November 6, 2025In: MLOps

How can I detect data drift without labeling production data?

My production data is unlabeled.I can’t calculate accuracy or precision anymore.Still, I need to know if the model is degrading.What can I realistically monitor?

Asked: October 30, 2025In: MLOps

How do I detect concept drift instead of just data drift?

John Marston

Feature distributions look stable.But prediction quality is declining.Simple drift metrics don’t explain it.Something deeper seems wrong.

Asked: October 2, 2025In: MLOps

Why does my model overfit even with regularization?

John Marston

Training loss decreases smoothly.Validation loss fluctuates.Regularization is enabled.Still, generalization is poor.

Asked: September 6, 2025In: MLOps

Why does retraining improve metrics but worsen business outcomes?

John Marston

Offline metrics improved noticeably.But downstream KPIs dropped.Stakeholders lost confidence.This disconnect is concerning.

Asked: February 13, 2025In: MLOps

Why does autoscaling my inference service increase latency?

John Marston

I enabled autoscaling to handle traffic spikes.Instead of improving performance, latency increased.Cold starts seem frequent.This feels counterproductive.