Machine Learning Crossword Puzzle

1234
Across
  1. 3. A very popular python library for large multi-dimensional numeric array and matrix processing
  2. 4. A type of machine learning is the science of decision making. It is about learning the optimal behavior in an environment to obtain maximum reward
Down
  1. 1. is a type of supervised machine learning algorithm that computes the linear relationship between a dependent variable and one or more independent features
  2. 2. A crucial step in the machine learning (ML) pipeline; it involves identifying and removing any missing, duplicate, or irrelevant items