5[Sep 24]Dimensionality reduction [Percy Liang]英文.pdf

Linear Dimensionality Reduction
Practical Machine Learning (CS294-34)
September 24, 2009
Percy Liang
Lots of high-dimensional data...
According to media reports,
a pair of hackers said on
Saturday that the Firefox
Zambian President Levy Web browser, commonly
Mwanawasa has won a perceived as the safer
second term in office in and more customizable
an election his challenger alternative to market
Michael Sata accused him leader Internet Explorer,
of rigging, official results is critically flawed. A
showed on Monday. presentation on the flaw
was shown during the
ToorCon hacker conference
face images in San Diego.
documents
gene expression data MEG readings
2
Motivation and context
Why do dimensionality reduct