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The first distinction the function makes is between full (also called “dense”) and sparse input arrays. Algorithm for Full Inputs The flow chart below shows the algorithm path when inputs A and B are full. Algorithm for Sparse Inputs If A is full and B is sparse then mldivide convert...
if an objective function is not purely linear by virtue of its inherent definition (as in the above example), it is often far easier to define it as being linear than to decide on some other functional form and convince others that the more complex form is the best possible choice. Linea...
on the levels Blue, Green, Gray. The function encode can be used to build models that have categorical variables. I will use part of the carsmall dataset to illustrate how categorical variables are encoded. In the model I will develop, Country of Origin will be a factor and I will...
The versatility ofmldividein solving linear systems stems from its ability to take advantage of symmetries in the problem by dispatching to an appropriate solver. This approach aims to minimize computation time. The first distinction the function makes is betweenfull(also called “dense”) andsparse...
We introduce a weight function r:Y→R such that r(y)>0∀y∈Y, and denote with S(Y) the vector space of all real-valued measurable functions g:Y→R that have a finite weighted sup-norm (Bertsekas, 2013§2.1) (1)‖g(x)‖∞,r=supy∈Y|g(y)|r(y)<∞.The following definitions...
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The NULL function can also handle the exotic types of boundary conditions that can be enforced in Chebfun (see [1]). For example, suppose we wish to again compute the null-space of the 3rd-order piecewise-smoooth ODE Lu := 0.001u''' + sign(x)*u'' + u, x in [-1 1] ...
如上图所示,一种查看多响应线性回归的方法是将线性表达式想象成与每个类对应的数值型的隶属函数(membership function)。 对于属于这个类的实例,隶属函数值为1 对于其他类的实例,函数值为0 对于一个新给出的实例,计算新实例与各个类的从属关系,从中选择从属关系最大的一个。