What is the definition for principle of independence systems?

The concept of "independence systems" is not a widely recognized or standard term in any specific field. It's possible you're referring to a specific concept within a particular area of study, but without more context, it's difficult to provide a definition.

To help me understand what you mean, could you provide some additional information? For example:

* What field are you referring to? (e.g., engineering, statistics, economics, computer science)

* What is the context of this term? (e.g., a specific book, lecture, research paper)

* Can you provide any examples of how this term is used?

With more context, I can better understand what you're looking for and provide a helpful definition.