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On 11/01/2010 10:39 AM, Wolfgang Laun wrote:
<blockquote
cite="mid:AANLkTikUY-yFd1Nhaj1Q=ERJa=Rx5iQMbL4eeYPqQan+@mail.gmail.com"
type="cite">Mostly out of curiosity:<br>
I have implemented a few things using full-blown backward chaining
and<br>
I know that these things could have been implemented just as well
using<br>
forward chaining. Therefore: Why does your project "need" bw
chaining?<br>
</blockquote>
<br>
A forward chaining engine finds all premisses and then draws all
conclusions it can make, recursively. A backward chaining engine
finds all goals, then tries to satisfy them using available facts.
If no facts remain and no goal has been satisfied, the system should
ask a user. A forward chaining engine would never find unsatisfied
goals, so it would never try to acquire additional information,
unless you specifically program it to do so. Basically, by doing
that you build in a backward chaining component.<br>
<br>
I have built quite a few expert systems that used both backward
chaining and forward chaining. Either one wouldn't have done the
job. <br>
<br>
dagdag<br>
Christine<br>
<br>
<blockquote
cite="mid:AANLkTikUY-yFd1Nhaj1Q=ERJa=Rx5iQMbL4eeYPqQan+@mail.gmail.com"
type="cite">
Of course, if you have a good algorithm based on that, it may be
easier<br>
to stay with it.<br>
-W<br>
<br>
<div class="gmail_quote">On 1 November 2010 10:15, Christine
Karman <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:mylists@christine.nl">mylists@christine.nl</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid
rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left:
1ex;">On 10/29/2010 04:32 PM, Mark Proctor wrote:<br>
> We have a prototype of BC that works, but won't be ready
until Q1 next<br>
> year.<br>
Is that in the svn? Is it a separate project in svn, or is it
part of<br>
the trunk?<br>
<br>
dagdag<br>
Christine<br>
> Mark<br>
>> dagdag<br>
>> Christine<br>
><br>
> _______________________________________________<br>
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target="_blank">https://lists.jboss.org/mailman/listinfo/rules-dev</a><br>
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<font color="#888888"><br>
<br>
--<br>
dagdag is just a two-character rotation of byebye.<br>
<br>
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<br>
<br>
<pre class="moz-signature" cols="72">--
dagdag is just a two-character rotation of byebye.
</pre>
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