On May 29, 6:38 am, William Elliot <ma...@panix.com> wrote: > On Tue, 28 May 2013, apoorv wrote: > > On May 27, 10:37 am, Graham Cooper <grahamcoop...@gmail.com> wrote: > > > On May 27, 2:32 pm, William Elliot <ma...@panix.com> wrote: > > > > > > > Is there some study on situation where the output from a TM at time T is > > > > > > > fed back so that the total input at time T+1 is some function of output > > > > > > > at time T and external input at time T+1.? > > > > > > > So imput is on the right and out on the left and when done at time > > > > > > t, move the output to the right of the tape and start again. > > > > > > > Time t+1 begins the new output from the old output. You get to wait > > > > > > until time t2 for the full second output. > > > Eliot's post ,which appears to be deleted, showed that a single TM , could > > implement feedback. However, if we put the added Requirement that the input > > at time t is processed with delay not exceeding A fixed time t0, then two TM > > s appear necessary . -Apoorv > > If t0 - t is larger than processing time, then you wouldn't. > > However for a second machine to start at time t+1 or some > time t0 when t0 - t is less than processing time, a second > machine can't wait until the output is completed, it has > to be processing the output as is it' coming out.
The machine receives external input EI(t).It must combine this with the Feedback of Output EO(t-to) to create total input TI(t).This is then the Total input TI(t) for the machine.Thus the Total Input corresponding to time t is being processed at some time t+ d. If we Fix d to be some acceptable time interval, then a single processor May not suffice. Second, I found that the formatting of the flow chart got disturbed. Just to repeat it with minimal formatting: Ext Input -->-----processor 1-->--Total Input->--proc 2-->---Output |------<internal feedback minimal lag---<--| The processing with internal feedback represents internal processes Of the brain. The feedback loop can be active with no Ext Input or Visible output ( Like thinking?).A break between processor 1 and 2 Will stop processing, between ext input and processor 1 loss of sensory ability; between processor 2 and output , loss of motor ability; and of the feedback loop , loss of thinking?