On Nov 27, 2007, at 8:53 PM, Ernest Friedman-Hill wrote:
n Nov 27, 2007, at 2:45 PM, Hal Hildebrand wrote:
On Nov 27, 2007, at 10:59 AM, Ernest Friedman-Hill wrote:
Jess doesn't spool working memory to disk; it lives in RAM. There
are techniques for telling Jess how to only load the facts it
actually needs, however.
Can you elaborate a bit more on that?
This is one of the best uses for Jess's limited backward chaining
facility. Jess "knows" when certain facts that don't exist would
activate some rules. Using backward chaining rules, you can hook
into this knowledge and supply just those needed facts in a "just-in-
time" manner (perhaps by querying for just the right information
from a database.) This way you don't have to load in the whole big
dataset at once -- just what is needed.
Ah, this is the strategy used by the "Jess Fact Storage Provider
Framework", correct? Now I understand. Very powerful indeed.
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