PayPal Senior Machine Learning Engineer Interview Questions and Answers

KNN algorithm is a simple and effective machine learning algorithm for classification and regression tasks.

• KNN stands for K-Nearest Neighbors.

• It is a non-parametric, lazy learning algorithm.

• Works by finding the K closest training examples in feature space to a given input data point.

• Classification: Assign the most common class among the K nearest neighbors.

• Regression: Take the average of the K nearest neighbors' target...read more