Certification Practice Exams with Real Test Questions & Answers

Researchers at NASA are creating a model on Amazon aws video

 ·  PT1H46M27S  ·  EN

ml-specialty video for researchers at NASA are creating a model on Amazon SageMaker to analyze images for detecting strong gravitational lensing, a phenomenon

Full Certification Question

Researchers at NASA are creating a model on Amazon SageMaker to analyze images for detecting strong gravitational lensing, a phenomenon in which an accumulation of matter in space is dense enough that it bends light waves as they travel around it. The training data contains 200K images of the negative class (images with no gravitational lensing) and only 2000 images of the positive class (images with gravitational lensing). The final model has 85% accuracy, but poor recall. How can you improve the model performance? (Select two)