1, can local variables and global variable duplicate?
A: Yes, the local will screen the overall situation. To use a global variable, you need to use the "::"
Local variables can have the same name as global variables, and when referenced within a
http://www.jianshu.com/p/ab697790090fFeature selection and feature learningIn the practical task of machine learning, it is very important to select a set of representative features for building the model. Feature selection typically chooses a
A survey of data cleansing and feature processing in machine learning with the increase of the size of the company's transactions, the accumulation of business data and transaction data more and more, these data is the United States as a group
What is a thread-local variable (thread-local variable). Easy to use threads: do not share sometimes the best ThreadLocal classes are quietly appearing in version 1.2 of the Java platform. Although supporting thread-local variables has long been
1. Can a local variable be renamed with a global variable?
A: Yes. Global blocking will be performed in some cases. To use global variables, you must use "::"
A local variable can have the same name as a global variable. A local variable with the
1. Background 1.1 questionsIn the practical application of machine learning, the number of features may be more, in which there may be irrelevant features, there may be correlations between features, easy to lead to the following consequences:(1)
Original: http://www.cnblogs.com/heaad/archive/2011/01/02/1924088.html1 reviews(1) What is feature selectionFeature Selection (Feature Selection) is also called feature subset selection (Feature subset Selection, FSS), or attribute selection
(1) What is feature selectionFeature Selection (Feature Selection) is also called feature subset selection (Feature subset Selection, FSS), or attribute selection (Attribute Selection), which refers to the selection of a subset of features from all
The underlying buffer overflow practice usually needs to determine the address of some local variables in the running state of the program, such as the start address of the input buffer that needs to be determined to obtain the start address of the
Static function (modifier function, local variable, global variable)In the C language, the literal meaning of static can easily lead us astray. In fact, it has three functions.(1) first introduce the first and most important one: hiding.When we
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