如何在 UML 类图中表示类的添加？

Question

I am required to use a UML class diagram to represent a model implementation done in Python. I have a case where Kernel_A + Kernel_B → Kernel_AB using __add__() method in the class.

These are class variables of a model, called Model_A , which is itself also a class variable of a class which performs estimation, lets call this Algorithm_A . Algorithm_A also has a class variable which is a separate model, Model_B , which is not related to the kernels.

Primarily, I am not clear on how to represent the relation between the kernel classes in the UML class diagram. Meaning that the kernel_AB is an addition of the classes kernel_A and kernel_B . Both of kernel_A and kernel_B have the same methods, but different class variables given that they are dictated by different parameters.

I am also not entirely clear on how to represent the class variable relationship between Model_A and Algorithm_A . Is this an aggregation relationship, shown with a diamond arrow?

To reiterate the components and relations:

• Kernel_A + Kernel_B → Kernel_AB ( __add__ method to create Kernel_AB )

• Kernel_AB → Model_A ( Kernel_AB class variable of Model_A )

• Model_A → Algorithm_A ( Model_A class variable of Algorithm_A )

• Model_B → Algorithm_A ( Model_B class variable of Algorithm_A

Answer 1

Your question is not fully clear about the Kernel... stuff. Nevertheless here an answer to your question about the relations between algorithms and models:

I assumed that Model_X were unrelated classes.