Question: 1 . Please explain why dimension reduction is important for data mining tasks such as clustering, and the major steps of using SVD for dimension

1. Please explain why dimension reduction is important for data mining tasks such as clustering, and the major steps of using SVD for dimension reduction. (18 points)
2. In text mining, how to find keywords using TF*IDF? Explain the detailed steps of obtaining term frequency and inverted document frequency, and how TF*IDF is related with Zipf distribution. (18 points)
1 . Please explain why dimension reduction is

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