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【多选题】
以下哪些是特征选择的方法？A.
Correlation filtering
B.
-正则化
C.
PCA
D.
Cross-validation
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】( )的表法意义为:学佛者要生平等心,呈喜悦相。对待任何人、任何事物,都要欢欢喜喜、平平静静,不跟任何人计较。
A.
弥勒佛
B.
释加牟尼佛
C.
阿弥陀佛
D.
卢舍那佛
【简答题】negotiation substantial commission exaggerate competitive donation finance reject bribery impose secure withdraw discount concerning
【单选题】It’s bad for your health to go to work ______ breakfast.
A.
without
B.
at
C.
in
D.
with
【单选题】In the sentence 'A health -care claims processor in Indianapolis, Ind. , hopes smart cards will stream- line medical - bill payments' ( paragraph 4 ), the word' streamline' has the meaning of _____.
A.
make.., into a stream
B.
make.., flow smoothly like a line
C.
make.., successfully
D.
make
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