Crossed-minds?

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Across
  1. 3. a statistical test that is used to determine whether there is an association between two categorical variables
  2. 4. Score harmonic mean of model's precision and recall
  3. 7. which assumption of CLRM is violated when estimators do not give least variance
  4. 8. a machine learning technique and search algorithm that reduces the size of decision tree by removing sections of the tree that provide little power to classify instances
Down
  1. 1. type of machine learning algorithm, where the action takes place,the consequences are observed, and the next action considers the result of the first action. It tries to maximise positive reward signals and minimise negative reward signals
  2. 2. B0 + b1x1 + b2xi^2 _ui is a ________________ function/equation?
  3. 5. regression analysis method that performs both variable selection and regularization in order to enhance the prediction accuracy and interpretability of the resulting statistical model by adding absolute values of coefficients to the cost function
  4. 6. measure of randomness or uncertainty