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From Aayush Kothari <>
Subject Re: Indexing Boolean Expressions
Date Tue, 21 Feb 2012 16:28:27 GMT
That's a really nice application of DNF and CNF. I'd be happy to work at it
if it gets approved in GSoC.

On 21 February 2012 14:09, J. Delgado <> wrote:

> Hi,
> I would like to propose implementing "Indexing Boolean Expressions" (See
> as a Lucene-based project for
> GSoC.
> Here is a snippet from the Abstract of the paper:
> "We consider the problem of efficiently indexing Disjunctive Normal Form
> (DNF) and Conjunctive Normal Form (CNF) Boolean expressions over a
> high-dimensional multi-valued attribute space. The goal is to rapidly find
> the set of Boolean expressions that evaluate to true for a given assignment
> of values to attributes. A solution to this problem has applications in
> online advertising (where a Boolean expression represents an advertiser’s
> user targeting requirements, and an assignment of values to attributes
> represents the characteristics of a user visiting an online page) and in
> general any publish/subscribe system (where a Boolean expression
> represents a subscription, and an assignment of values to attributes
> represents an event)."
> Any interest?
> -- J

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