题目内容
The company Internet Movies, Inc. has found wide success in their streaming movie business. After many long and successful years of delivering content, they have decided to use machine learning to make their business even more successful. Luckily, they already possess a huge dataset that has grown over years and years of user activity – but they need your help to make sense of it! Answer the following questions1. Let’s start with a simple case. Assume user Alice is a particularly good member and she makes sure to rate every movie she ever watches on the website. What machine learning approach would be better for the company to use for determining whether she would be interested in a new specific movie?
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7. Are there other cluster options for this data that would lead to a smaller badness value? Do not consider the case of each data point being a separate cluster.
6. What is the badness of the set of clusters C1 and C2?______
5. What is the variance of C2?______
4. Now consider the following two clusters: C1 = [2, 2, 2] and C2 = [-6, -6, -4, -4].What is the variance of C1?______
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