[rules-users] Anybody using Drools 4.0 with approximate string matching?

[Michael Neale]

Also, there is strsim: http://mvel.codehaus.org/String+Similarity+Check

so you can do

Something( eval(  (field strsim "blah") > 0.9 ) )
(or something like that anyway - to look for similarity rating). But I think
soundex is what you really want.

On 9/4/07, Michael Neale <michael.neale at gmail.com> wrote:
>
> Hi Irving. That is a very interesting and kind of cool problem.
> Happily, Mike Brock who built MVEL, which is part of drools, embeded
> soundex into it.
>
> So you can do (and I just tried this):
>
> rule "Hello World"
>     when
>         c : Cheese( eval(type soundslike "foobar") )
>     then
>         c.setPrice(42);
> end
>
> And it will match "Cheese" with a type of "fubar" as well. Using soundex
> standard. You could of course use a function to use some other library that
> you want, but this is built in.
>
> Note the use of "eval" inside the pattern to indicate it is an expression,
> not a field constraint.
>
> Hope that helps !
>
> Michael.
>
> On 9/4/07, Irving Reid <irving at cfrq.net> wrote:
> >
> > I have a use case where we'd like to match free text strings, with words
> > sometimes spelled incorrectly. Has anyone tried Drools with an approximate
> > string matcher (
> > http://en.wikipedia.org/wiki/Approximate_string_matching)?
> >
> > I know that I can use regular expressions to match some common spelling
> > errors, but it would be way cool to use an algorithm that doesn't need to
> > have all the possible errors programmed in beforehand.
> >
> > - irving -
> >
> >
> >
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
>
>
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