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Deep Learning with Theano

You're reading from   Deep Learning with Theano Perform large-scale numerical and scientific computations efficiently

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Product type Paperback
Published in Jul 2017
Publisher Packt
ISBN-13 9781786465825
Length 300 pages
Edition 1st Edition
Tools
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Author (1):
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Christopher Bourez Christopher Bourez
Author Profile Icon Christopher Bourez
Christopher Bourez
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Table of Contents (15) Chapters Close

Preface 1. Theano Basics FREE CHAPTER 2. Classifying Handwritten Digits with a Feedforward Network 3. Encoding Word into Vector 4. Generating Text with a Recurrent Neural Net 5. Analyzing Sentiment with a Bidirectional LSTM 6. Locating with Spatial Transformer Networks 7. Classifying Images with Residual Networks 8. Translating and Explaining with Encoding – decoding Networks 9. Selecting Relevant Inputs or Memories with the Mechanism of Attention 10. Predicting Times Sequences with Advanced RNN 11. Learning from the Environment with Reinforcement 12. Learning Features with Unsupervised Generative Networks 13. Extending Deep Learning with Theano Index

Seq2seq for chatbots


A second target application of sequence-to-sequence networks is question-answering, or chatbots.

For that purpose, download the Cornell Movie--Dialogs Corpus and preprocess it:

wget http://www.mpi-sws.org/~cristian/data/cornell_movie_dialogs_corpus.zip -P /sharedfiles/
unzip /sharedfiles/cornell_movie_dialogs_corpus.zip  -d /sharedfiles/cornell_movie_dialogs_corpus

python 0-preprocess_movies.py

This corpus contains a large metadata-rich collection of fictional conversations extracted from raw movie scripts.

Since source and target sentences are in the same language, they use the same vocabulary, and the decoding network can use the same word embedding as the encoding network:

if opt.dataset == "chatbot":
    embeddings = encoder_params[0]

The same commands are true for chatbot dataset:

python 1-train.py  --dataset chatbot # training
python 1-train.py  --dataset chatbot --model model_chatbot_e100_n2_h500 # answer my question
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