How_to_do_Sentiment_Analysis

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How_to_do_Sentiment_Analysis

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This is the code for 'How to Do Sentiment Analysis' #3 - Intro to Deep Learning by Siraj Raval on Youtube

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# How_to_do_Sentiment_Analysis
This is the code for 'How to Do Sentiment Analysis' #3 - Intro to Deep Learning by Siraj Raval on Youtube

##Overview

This is the code for [this](https://youtu.be/si8zZHkufRY) video on Youtube by Siraj Raval. It uses [TFLearn](http://tflearn.org/) to train a Sentiment Analyzer on a set of IMDB [Movie ratings](https://www.kaggle.com/deepmatrix/imdb-5000-movie-dataset). Once trained, given some input text, it will be able to classify it as either positive or negative. The neural network that is built for this is a [recurrent network](https://en.wikipedia.org/wiki/Recurrent_neural_network). It uses a technique called [LSTM](http://colah.github.io/posts/2015-08-Understanding-LSTMs/) which I'll really deep dive into in later videos.

##Dependencies

* tflearn

Use [this](http://tflearn.org/installation/) guide to install TFLearn. Or just use the Amazon Web Services prebuilt [AMI](https://aws.amazon.com/marketplace/pp/B01EYKBEQ0/ref=_ptnr_wp_blog_post) to run this in the cloud

##Usage

Run ``demo.py`` in terminal and it should start training

##Challenge

The challenge for this video is to train a model on [this](https://www.kaggle.com/egrinstein/20-years-of-games) dataset of video game reviews from IGN.com. Then, given some new video game title it should be able to classify it. You can use [pandas](http://pandas.pydata.org/) to parse this dataset. Right now each review has a label that's either Amazing, Great, Good, Mediocre, painful, or awful. These are the emotions. Using the existing labels is *extra credit*. The baseline is that you can just convert the labels so that there are only 2 emotions (positive or negative). Ideally you can use an RNN via TFLearn like the one in this example, but I'll accept other types of ML models as well.

You'll learn how to parse data, select appropriate features, and use a neural net on an IRL problem. Remember to ask each other questions for help in the Slack channel. Good luck!

##Credits

Credits for this code go to the [author](https://github.com/aymericdamien) of TFLearn. I've merely created a wrapper to get people started.

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