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- Date: Mon, 25 Jan 1993 15:52:00 GMT
- Sender: "Control Systems Group Network (CSGnet)" <CSG-L@UIUCVMD.BITNET>
- From: "Robert K. Clark" <0004912499@MCIMAIL.COM>
- Subject: RE: ANN & MEMORY - RKC
- Lines: 72
-
- SUBJECT:RE: ANN & MEMORY - RKC
-
- MOWRER
- Yes, Bill, I remember visiting Urbana to meet with MOWRER and others, but
- not much detail. We did discuss his book, I think, but I now have only
- vague impressions of the book and the meeting.
-
- SYMPATHY
- Bruce, THANKS for the sympathy! I'm improving my efficiency, but the
- quantity of incoming material is still overwhelming! (Is offering
- sympathy "Positive Feedback?")
-
- ARTIFICIAL NEURAL NETWORK and MEMORY
- John Gardner (930121), refers to suggestions from Albus using a large
- memory system relating arm states to values of muscle torques/forces.
- Nothing is said about the controlling inputs ("Reference Signals) for this
- system. Presumably they come from the operator of the system.
-
- This closely resembles my view of the operation of Human Systems (Bob
- Clark 921205).
-
- When a decision is needed (a choice between/among alternatives), the DME
- examines ("imagines") related experiences from memory. It considers
- conditions (remembered) that may limit the selection(s). Anticipated
- results (projected through imagination) are compared with the objectives
- for acceptability. The DME may combine selected procedures sequentially,
- or use an average (weighted, perhaps) of the imagined procedures.
-
- These imagined procedures are used by the DME as structured inputs to the
- corresponding levels of the hierarchy. Under ordinary conditions, this
- may take only a small fraction of a second. But if the situation is
- complex (and time permits), extensive investigation and study may be used
- before finally selecting the procedure.
-
- The whole process is so familiar and quick that it is easily over-looked.
-
- This very general summary becomes more meaningful when applied to real
- people in real situations. Saw a figure skating contest (pairs) last
- night. VERY complex activities -- mainly muscle skills, but commentators
- reported some of the personal interactions that can play a part. I was
- struck by the situation when a DISTURBANCE occurred, a fall to the ice.
- This is a very complex situation -- the planned sequence, with its timing
- requirements, has been suddenly interrupted. This appears to require
- extensive re-working of the many systems involved. However the response
- -- compensating movements -- was within a fraction of a second! Clearly,
- the skaters had available, almost instantly, an alternative procedure. It
- was designed to both avoid injury and to continue the program.
-
- Most of these skaters had ten or more years of practice. If you have ever
- tried to ice skate, you know that much of early experience involved
- learning how to fall without "bruises." Thus they have a large supply of
- alternative memories that can be quickly applied when needed.
-
- Notice, while this involves much "repetition," this is NOT
- "reinforcement," rather it is acquiring a repertoire of alternative
- variations of performance.
-
- In terms of Orders of the Hierarchy, such a contest certainly involves
- Interpersonal Relationships (my suggested Sixth Order) and, in various
- degrees, all lower orders. In performance, the selected relationships are
- played out. But in discussing the contest, communication skills are used.
- Here words are used to represent perceived variables at several levels.
- The ice, the skates, the arena are (more or less) Objects that can be
- considered among the Second Modes of Sixth Order. The movements, with
- their timing, would be Third and Fourth Modes. The combination into
- skilled performance could be Fifth Order. Over-all there are the personal
- interactions of the skaters in a framework of competition. Here we have
- Sixth Mode of Sixth Order. This analysis can be carried further and
- applied to other activities.
-
- Regards,
- Robert K. Clark
-