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组变量选择
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组变量选择
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数据简化
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group variable selection
组变量选择
当高维数据自变量呈现分组结构时,选择重要变量组的方法。
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dowel
dowel pin
DO white dwarf
Dow-Jones Indexes
down-arrow notation
down-bearing stomachache
downburst
down clothes
down-Comptonization
down conversion
down-conversion
downconversion
down-conversion demodulation
down conversion process
down-conversion process
down-crossing
down-crossing point
downdraft
downdraft gasifier
down draft kiln
Downes law
down garment
downgraded predication
down grinding
down hair
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