Predictive control, optimization

[From Rick Marken (950503.1000)]

Hans Blom (950503) --

Thanks for the predictive control program and detailed write up. This is what
we need so that we can see what predictive control is really about. I can't
wait to start experimenting with the program. It looks like a lot of work
went into this; thanks again for posting it.

Bill Powers (950502.0910 MDT) says --

I see no evidence that human organization is optimized in any way:

Martin Taylor 950502 21:00) replies --

Oh, so you don't believe Rick's "Hierarchy of Perception" paper?

Oh, how exciting. I'm getting dragged into an "optimization" debate. I
presume the paper Martin is referring to is "Hierarchical behavior of
perception" which is available (sans graphics) from the CSG server via
gopher or www. But I don't understand how that paper relates to evidence of
optimization of human organization. I thought it was about how the
apparent hierarchical organization of perception and behavior is a reflection
of the hierarchical organization of control. I illustrated this fact by
showing that temporal limits on behavior (like the maximum speed at which
we can produce a sequence of movements) correspond to temporal limits on
perception (like the maximum speed at which we can perceive a sequence of
movements). A argued that the behavioral limits are a consequence of the
perceptual limits -- you can't produce a controlled sequence unless you can
perceive that it is occurring.

What does this have to do with optimization?

Best

Rick

[Martin Taylor 950503 20:15]

Rick Marken (950503.1000)

Bill Powers (950502.0910 MDT) says --

I see no evidence that human organization is optimized in any way:

Martin Taylor 950502 21:00) replies --

Oh, so you don't believe Rick's "Hierarchy of Perception" paper?

Oh, how exciting. I'm getting dragged into an "optimization" debate. I
presume the paper Martin is referring to is "Hierarchical behavior of
perception"

Yes. Sorry for misremembering the title.

I thought it was about how the
apparent hierarchical organization of perception and behavior is a reflection
of the hierarchical organization of control. I illustrated this fact by
showing that temporal limits on behavior (like the maximum speed at which
we can produce a sequence of movements) correspond to temporal limits on
perception (like the maximum speed at which we can perceive a sequence of
movements).

That's what I thought it said. That's the point I was making in my response.

Martin