What are the primary uses of a binary matrix is system structure analysis?

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Joseph James Simpson

Or asked another way, is anyone using Interpretive Structural Modeling and binary matrices for system structure analysis?

Or asked in a more general form, is anyone using binary matrices in any type of system evaluation and analysis? Or has this type of analysis tool (binary matrices) been dropped from system analysis usage?

Even a more general question, is anyone using binary matrices for anything?

If so, what?

Is anyone using N-Squared Charts for system analysis?