mean definition and example

# -- * -- Coding: UTF-8 -- * -- import mathimport itertoolsdef mean (t): "mean" Return float (sum (t)/Len (t) def E (X, p): "discretization mathematical expectation (also called mean) of a random variable ): the sum of the product of random variable

Image FilteringWhat is image filteringImage filtering, which is to suppress the noise of the target image under the condition of preserving image detail characteristics, is an indispensable operation in image preprocessing, and its processing effect

"Definition" and "declaration" of functions are not the same thing. The definition of function refers to the establishment of function function, including specifying function name, function value type, formal parameter and its type, function body,

C ++ declaration and definitionC ++ declaration and definition The Declaration is to introduce a name into the program. The definition provides a unique description of an object in the program. Declarations and definitions sometimes exist at the

Cluster analysis groups data Objects (clusters) based only on the information found in the data describing the objects and their relationships . The goal is that objects within a group are similar to each other, and objects in different groups are

Class Definition details in C ++ Member variables Each class can have no members or multiple members. The members can be data, functions, or type aliases. A class can contain several public, private, and protected parts. Members defined in the

"Editor's note" in the 90 's, the linux+apache+mysql+php architecture was rage until now, still the basic architecture of many WEB applications. However, with the change of demand and the explosion of data flow, LAMP has inevitably gone down the

There are many places in the C language where macro definitions are used, such as in header files to prevent header files from being repeatedly included: #ifndef ctest_header_h #define CTEST_HEADER_H /header file content #endif Many macro

When I was reading foreign textbooks, I found a concept of Mean Squared Error (mean variance). I went to Zhejiang University's book probability theory and mathematical statistics, the mean variance and standard deviation are defined as a concept

the meaning and calculation formula of covariance Children who have studied probability statistics know that the most basic concept in statistics is the mean, variance, or standard deviation of a sample. First we give you a set of n samples, and