What are the differences between overfitting and underfitting?


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Do gradient descent methods always converge to the same point?

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A stranger uses a search engine to find something and you do not know anything about the person. How will you design an algorithm to determine what the stranger is looking for just after he/she types few characters in the search box?

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Explain collaborative filtering

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What is systematic sampling?

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What are the types of biases that can occur during sampling?

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How have you overcome a barrier to finding a solution?

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What is normal distribution

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Can you define power analysis?

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