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From Aaron Schon <>
Subject Re: Lucene for Sentiment Analysis
Date Sat, 01 Mar 2008 21:33:44 GMT
Thanks to those who responded. I was wondering if taking a bag of words approach might work.
For example chunking the sentences to be analyzed and running a Lucene query against an index
storing sentiment polarity. Has anyone had success with this approach? I do not need a super
accurate system, something that is "reasonably" accurate.

Also, could you suggest good publicly available training datasets? I am aware of the Cornell
Movie Reviews dataset[1]



----- Original Message ----
From: Vivek Balaraman <>
Sent: Saturday, March 1, 2008 6:35:04 AM
Subject: Re: Lucene for Sentiment Analysis

We've been working on Sentiment Analysis. We use GATE and Wordnet for the
lexical / semantic analysis and J Free Charts for the visualization. The
domain is reviews on retail banking and in general our accuracy is around
75% and recall around 25%

We tried out lingpipe as well which also gave good results.

Vivek Balaraman

On Sat, Mar 1, 2008 at 3:16 AM, Aaron Schon <> wrote:

> Hello, I was interested to learn about using Lucene for text analytics
> work such as for Sentiment Analysis. Has anyone done work along these lines?
> if so, could you share your approach, experiences, accuracy levels obtained
> etc.
> Thanks,
> AS
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