Skip to content
ml-recall

#baseline

8 questions from ML Fundamentals, Evaluation Metrics, Explainable AI, NLP Tasks, Policy Gradient & Actor-Critic

Timed test

8 questions · 8 min · score and explanations at the end

Take a test
Q 1 / 8Score 0 / 0

Question 1: Short answer

easyAI-checkedML Fundamentals

A small utility matrix of ratings has missing entries (—):

Movie 1 Movie 2 Movie 3
User 1 5 — 3
User 2 4 2 —
User 3 — 1 2

A baseline predicts a missing rating as the average of the user's mean rating and the item's mean rating (each over the observed entries). What rating does it predict for User 1 and Movie 2?

a number, 2 decimals