Re: [rules-users] Inter-fact comparison
Thanks for the quick reply.
Yes, the original facts are already coming in via a stream (Fusion) to an existing set of
rules so I was hoping to build on that. What I am trying to do is evaluate logins
information as users are attempting to login trying to identify hack attempts by a person
trying to login with a slightly different user name over a given period of time.
Earnie!
________________________________
From: David Sinclair <dsinclair(a)chariotsolutions.com>
To: Rules Users List <rules-users(a)lists.jboss.org>
Sent: Tue, June 22, 2010 3:47:36 PM
Subject: Re: [rules-users] Inter-fact comparison
Hi Earnie,
What you are explaining seems pretty straight forward and would more likely than not be
overkill to use a rule engine. Are there other aspects of the system you are leaving out
that warrant the use of Drools?
dave
2010/6/22 Earnest Dyke <earniedyke(a)yahoo.com>
Greetings all,
I have a requirement to compare a set of facts against each other, calculate a value that
indicates the amount of difference (Levenshtein distance) between a single attribute on
each fact. So I load all of my facts into working memory then what? Do I execute a rule
first that creates a new set of facts which is a Cartesian product of the original set of
facts, each new fact containing a reference to two original facts and the diff between
them? Looked at using a custom accumulate function but I don't think that's going
to do what I need since it is intended to go through a set of facts and return a single
value.
Any and all related help is appreciated.
Earnie!
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