Questions about covariance
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What is model.cov_params() in statsmodels?
I am unable to understand what the [cov_params][1] from a fitted statsmodel represents. I thought it would be the covariance matrix of the data but that does not seem to be the case. It is not even sc...
figs_and_nuts
Votes: 0
Answers: 0
Dealing with Template Covariance without Dynamic_Cast or Templated classes
I am trying to create a class structure that works like this:
class Base
{
public:
class NestedBase
{
};
virtual std::vector<NestedBase*> getNested();
};
class Derived : pub...
WalleyM
Votes: 0
Answers: 0
Does mutation break contravariance in the same way it breaks covariance?
Mutative covariant containers are unsound.
For example, and using no language in particular,
interface Pet;
class Cat extends Pet { meow(); }
class Dog extends Pet { woof(); }
class Box[T] {
value:...
Quelklef
Votes: 0
Answers: 0
Converting std::vector to vector of item superclass
I have two classes, class Subclass inherits from the class Superclass:
class Superclass { /* … */ };
class Subclass : public Superclass { /* … */ };
Somewhere in the code, I also have a vector of Sub...
jiwopene
Votes: 0
Answers: 2
