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From Dmitry Dorofeev <>
Subject Re: Sentiment Analysis
Date Wed, 17 May 2017 15:04:48 GMT
We checked (1) Srivatsan work, but it is almost impossible to reproduce.

(2) and (3) looks interesting, thanks.

----- Original Message -----
From: "Frank McQuillan" <>
Sent: Tuesday, May 16, 2017 7:52:24 PM
Subject: Re: Sentiment Analysis

Here are some links on sentiment analysis using MADlib and/or GPText that I
am aware of:

Deck on topic from Pivotal data scientist
Pipeline description starts on slide 18

Github repo corresponding to above

Blog on text analytics as a service

Sentiment classifier using PL/Python on PostgreSQL, Greenplum Database, or
Apache HAWQ, related to blog above

Blog from zData using Greenplum, GPText and Alpine (which uses MADlib)

I hope these are useful.  Please let us know how your project progresses.


On Sat, May 13, 2017 at 1:13 PM, Dmitry Dorofeev <> wrote:

> Hi all,
> We are a BI developers preparing demo for PGDay'17 Russia. Our demo is
> based on Enron emails dataset and financial data like NYSE stock etc.
> Some data is loaded in Postgres and some data is in GreenPlum, so we can
> use (and already using) GPText and MADlib.
> The most exciting thing is sentiment analysis on Enron emails. We want to
> start with email subjects only, which is similar to twits and we found
> several OSS projects which can do that.
> Can anybody advise on the best way to do sentiment analysis with GPtext &
> MADlib ? Preferably running inside DB using MADlib?
> Are there any articles, github projects covering GPtext/MADlib sentiment
> analysis you would recommend ?
> What about emails body sentiment analysis, is that easily doable or we
> need to write complex software to do it ?
> Thanks
> -Dmitry Dorofeev

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