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Companies: Amazon Difficulty: Medium Frequency:  Medium Question How to minimize the loss function in linear regression training? Answer Linear regression is a popular method so you should be familiar with the…

Companies: Amazon, Microsoft Difficulty: Medium Frequency:  High Question Explain the difference between gradient descent (GD) , stochastic gradient descent (SGD) and momentum. Answer In GD we pass through the entire dataset…

Companies: Amazon, Microsoft Difficulty: Medium Frequency:  High Question Talk about some methods of dimensions reduction and explain PCA. Answer Adapted from Dimensionality Reduction Below we give a brief overview of 4…