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  1. 2 天前 · Principal component analysis (PCA) is a linear dimensionality reduction technique with applications in exploratory data analysis, visualization and data preprocessing. The data is linearly transformed onto a new coordinate system such that the directions (principal components) capturing the largest variation in the data can be easily identified.

  2. 1 天前 · Avatar: The Last Airbender, also known as Avatar: The Legend of Aang in some regions, is an American animated fantasy action television series created by Michael Dante DiMartino and Bryan Konietzko and produced by Nickelodeon Animation Studio. Avatar is set in a largely Asiatic-inspired world in which some people can telekinetically manipulate one of the four elements—water, earth, fire or ...