The GATE Grind

GATE 2026 DA – Question 12

Machine Learning · Bias-variance trade-off and cross-validation · 1 mark · Multiple choice

Consider that you are training a classifier for a 10-class classification problem. Each input is represented as a 512-dimensional vector. There are 1000 samples, out of which first 100 will be used for testing. Let Leave-One-Out-Cross-Validation (LOOCV) be used for selection of the classifier model before testing.

Which of the following options is the correct number of validation splits that will be generated?

  1. 10
  2. 512
  3. 900
  4. 1000

Practise this question in The GATE Grind →

Show answer and explanation

Correct answer: (C) 900

Explanation

The first 100 samples are kept for the test, so only the other 900 samples are available for model selection. Leave-one-out validation makes one split for each of those 900 samples, with that sample as the validation set. So 900 splits are generated.