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dumb question: what is the antonym of "memoryless"?

Started by robert bristow-johnson April 27, 2006
i'm sure you can see the root to this question.  "nonmemoryless" is a
double negative and clumsy.

when categorizing systems into dichotomies, we might have:

time-variant vs. time-invariant
linear vs. nonlinear
casual vs. acausal
????  vs. memoryless

what's the best word for this?  what prefix means "having"?  the
opposite of "sans"?

r b-j

robert bristow-johnson wrote:

> i'm sure you can see the root to this question. "nonmemoryless" is a > double negative and clumsy. > > when categorizing systems into dichotomies, we might have: > > time-variant vs. time-invariant > linear vs. nonlinear > casual vs. acausal
causal vs. anti-causal An acausal system has both causal and anti-causal components. (See http://www.answers.com/topic/anticausal-system)
> ???? vs. memoryless > > what's the best word for this? what prefix means "having"? the > opposite of "sans"?
with memory? memoried? memoryful? memorable? :-) Julius O. Smith uses memoryless and instantaneous as synonyms. (See http://www-ccrma.stanford.edu/~jos/pasp/Memoryless_Nonlinearities.html) Perhaps that might lead to an answer? Ciao, Peter K.
Peter K. wrote:
> robert bristow-johnson wrote: > > >>i'm sure you can see the root to this question. "nonmemoryless" is a >>double negative and clumsy. >> >>when categorizing systems into dichotomies, we might have: >> >>time-variant vs. time-invariant >>linear vs. nonlinear >>casual vs. acausal > > > causal vs. anti-causal > > An acausal system has both causal and anti-causal components. > > (See http://www.answers.com/topic/anticausal-system) > > >>???? vs. memoryless >> >>what's the best word for this? what prefix means "having"? the >>opposite of "sans"? > > > with memory? > memoried? > memoryful? > memorable? :-) > > Julius O. Smith uses memoryless and instantaneous as synonyms. > > (See > http://www-ccrma.stanford.edu/~jos/pasp/Memoryless_Nonlinearities.html) > > Perhaps that might lead to an answer? > > Ciao, > > Peter K. >
Digital Logic people have the problem solved with 'combinational' (or 'combinatorial') vs. 'sequential', so the term 'sequential is a possibility for a system with memory. I don't think 'instantaneous' is useful, as the response of a state-free system is just as quick as a system with states, even though neither will be truly instantaneous. Come to think of it, the terms 'state-free' or 'stateless' might be suitable for a system with no memory. This would lead to the term 'state-Dependant' for systems that do have memory. Regards, John
robert bristow-johnson wrote:
> i'm sure you can see the root to this question. "nonmemoryless" is a > double negative and clumsy. > > when categorizing systems into dichotomies, we might have: > > time-variant vs. time-invariant > linear vs. nonlinear > casual vs. acausal > ???? vs. memoryless > > what's the best word for this? what prefix means "having"? the > opposite of "sans"?
With storage? With memory? Why not an adjectival phrase instead of an adjective? Jerry -- Engineering is the art of making what you want from things you can get. �����������������������������������������������������������������������
John Monro wrote:
> Peter K. wrote: >> robert bristow-johnson wrote: >> >> >>> i'm sure you can see the root to this question. "nonmemoryless" is a >>> double negative and clumsy. >>> >>> when categorizing systems into dichotomies, we might have: >>> >>> time-variant vs. time-invariant >>> linear vs. nonlinear >>> casual vs. acausal >> >> >> causal vs. anti-causal >> >> An acausal system has both causal and anti-causal components. >> >> (See http://www.answers.com/topic/anticausal-system) >> >> >>> ???? vs. memoryless >>> >>> what's the best word for this? what prefix means "having"? the >>> opposite of "sans"? >> >> >> with memory? >> memoried? >> memoryful? >> memorable? :-) >> >> Julius O. Smith uses memoryless and instantaneous as synonyms. >> >> (See >> http://www-ccrma.stanford.edu/~jos/pasp/Memoryless_Nonlinearities.html) >> >> Perhaps that might lead to an answer? >> Ciao, >> >> Peter K. >> > > Digital Logic people have the problem solved with 'combinational' (or > 'combinatorial') vs. 'sequential', so the term 'sequential is a > possibility for a system with memory. > > I don't think 'instantaneous' is useful, as the response of a state-free > system is just as quick as a system with states, even though neither > will be truly instantaneous. > > Come to think of it, the terms 'state-free' or 'stateless' might be > suitable for a system with no memory. This would lead to the term > 'state-Dependant' for systems that do have memory. > > Regards, > John
I think a stateful and a stateless system would be good descriptive words. One clearly requires memory whilst the other does not. Might cause some upsets with state machine logic, though I'm sure context would resolve this. Bevan
robert bristow-johnson wrote:
> i'm sure you can see the root to this question. "nonmemoryless" is a > double negative and clumsy. > > when categorizing systems into dichotomies, we might have: > > time-variant vs. time-invariant > linear vs. nonlinear > casual vs. acausal > ???? vs. memoryless > > what's the best word for this? what prefix means "having"? the > opposite of "sans"? > > r b-j >
These days networking people like to classify similar things as stateful and stateless. Steve
Steve Underwood wrote:
> robert bristow-johnson wrote: > >> i'm sure you can see the root to this question. "nonmemoryless" is a >> double negative and clumsy. >> >> when categorizing systems into dichotomies, we might have: >> >> time-variant vs. time-invariant >> linear vs. nonlinear >> casual vs. acausal >> ???? vs. memoryless >> >> what's the best word for this? what prefix means "having"? the >> opposite of "sans"? >> >> r b-j >> > > These days networking people like to classify similar things as stateful > and stateless.
"Stateless" brings to mind the fictional Philip Nolan in _The_Man_Without-a-Country_. Jerry -- Engineering is the art of making what you want from things you can get. �����������������������������������������������������������������������
Hi r b-j--

>i'm sure you can see the root to this question. "nonmemoryless" is a >double negative and clumsy. > >when categorizing systems into dichotomies, we might have: > >time-variant vs. time-invariant >linear vs. nonlinear >casual vs. acausal >???? vs. memoryless > >what's the best word for this? what prefix means "having"? the >opposite of "sans"? > >r b-j
Fascinating question! I thought about it for a bit and could come up with a couple of tame ones. Among the ruins, I thought, "Recollect" was bold stood out. It is quite intuitive, as the disctionary meaning is close to what we want- "Recall knowledge from memory; have a recollection". A tamer version would be "with-recollect" Either ways, let me know what you think! Cheers! --Bhooshan
Peter K. wrote:
> robert bristow-johnson wrote: > > > i'm sure you can see the root to this question. "nonmemoryless" is a > > double negative and clumsy. > > > > when categorizing systems into dichotomies, we might have: > > > > time-variant vs. time-invariant > > linear vs. nonlinear > > casual vs. acausal > > causal vs. anti-causal > > An acausal system has both causal and anti-causal components.
precisely, Peter. anti-causal and causal are not dichotomies of each other. either there is *no* dependence on future inputs or there is *some* dependence on future inputs. i s'pose you could also say that anti-causal and causal are also dichotomies of each other: either there is *no* dependence on past inputs or there is *some* dependence on past inputs.
> (See http://www.answers.com/topic/anticausal-system) > > > ???? vs. memoryless > > > > what's the best word for this? what prefix means "having"? the > > opposite of "sans"?
if "sans" meant "having" instead of the opposite, i would like: "sans-memory". what's the opposite prefix to "sans"?
> with memory? > memoried? > memoryful?
probably "memoryful". like "dimensionful constant". ever hear that term (or "dimensional")?
> memorable? :-)
not with me. my brain is toast. i can't even remember my daughter's name. (oh, i guess i have two of 'em.)
> > Julius O. Smith uses memoryless and instantaneous as synonyms. > > (See > http://www-ccrma.stanford.edu/~jos/pasp/Memoryless_Nonlinearities.html) > > Perhaps that might lead to an answer?
hmmm. but a system could have an intantaneous reaction to a change in the input and still have memory. (h[0] would have to be non-zero assuming linear.) boy, i dunno. r b-j
>i'm sure you can see the root to this question. "nonmemoryless" is a >double negative and clumsy. > >when categorizing systems into dichotomies, we might have: > >time-variant vs. time-invariant >linear vs. nonlinear >casual vs. acausal >???? vs. memoryless > >what's the best word for this? what prefix means "having"? the >opposite of "sans"? > >r b-j >
On second thoughts, I think the bottleneck is the word memoryless in the first place. Instead if we can move away a new pair of antonyms it might be more intuitive. Like: 1] With Call-back & Without Call-back 2] With Recall & Without Recall 3] With Retrieve & Without Retrieve Iam sure in time some-one would "internalize" these immortal words! :-) --Bhooshan