Sentiment Analysis using LingPipe on windows 7:

Standard

In this post, I’ll point you to the resource using which you can perform sentiment analysis using LingPipe on a windows OS. Along with that I’ll share couple of issues that I ran into when I was trying to run this demo on a Windows 7:

So first up, here’s the resource:

http://alias-i.com/lingpipe/demos/tutorial/sentiment/read-me.html

Now here are a couple of issues that I had:

1. Error: could not find or load the main class PolarityBasic

lingpipe could not find or load main class polaritybasic

To solve this error, you’ll need to build the files given under the C:\lingpipe-4.1.0\demos\tutorial\sentiment – we use ANT for this. Let’s see how to do that:

2. Building sentiment.jar using ant jar

After successfully downloading ant on windows and setting the ANT_HOME variable to c:\apache-ant-1.8.4 – I was still getting the error that ant is not a recognized command.

So I ran following commands:

C:\>set ANT_HOME=C:\apache-ant-1.8.1
C:\>set JAVA_HOME=C:\jdk1.6.0_24
C:\>set PATH=%ANT_HOME%\bin;%JAVA_HOME%\bin
C:\>ant -version
// it worked!

Thanks: http://stackoverflow.com/questions/5607664/installing-ant-ant-home-is-set-incorrectly-on-windows-7

Now I ran the following command:

build sentiment.jar ant lingpipe

3. In the tutorial they used POLARITY_DIR – I didn’t use that, Instead I just inputted c:\review_polarity because that’s where I unzipped the movie review dataset:

movie review sentiment analysis polarity

Here’s the screenshot about the command that does basic polarity analysis:

sentiment analysis lingpipe windows

And Thanks: http://stackoverflow.com/questions/15010184/lingpipe-and-sentiment-analysis/15011482

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