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Neural Network Projects with Python

You're reading from   Neural Network Projects with Python The ultimate guide to using Python to explore the true power of neural networks through six projects

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Product type Paperback
Published in Feb 2019
Publisher Packt
ISBN-13 9781789138900
Length 308 pages
Edition 1st Edition
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Author (1):
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James Loy James Loy
Author Profile Icon James Loy
James Loy
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Table of Contents (10) Chapters Close

Preface 1. Machine Learning and Neural Networks 101 FREE CHAPTER 2. Predicting Diabetes with Multilayer Perceptrons 3. Predicting Taxi Fares with Deep Feedforward Networks 4. Cats Versus Dogs - Image Classification Using CNNs 5. Removing Noise from Images Using Autoencoders 6. Sentiment Analysis of Movie Reviews Using LSTM 7. Implementing a Facial Recognition System with Neural Networks 8. What's Next? 9. Other Books You May Enjoy

Model building in Python using Keras

Now, let's implement our model architecture in Keras. Just like in the previous project, we're going to build our model layer by layer in Keras using the Sequential class.

First, split the DataFrame into the training features (X) and the target variable that we're trying to predict (y):

X = df.loc[:, df.columns != 'fare_amount'] 
y = df.loc[:, 'fare_amount']

Then, split the data into a training set (80%) and a testing set (20%):

from sklearn.model_selection import train_test_split

X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2)

Next, let's build our Sequential model in Keras according to the neural network architecture we outlined earlier:

from keras.models import Sequential
from keras.layers import Dense

model = Sequential()
model.add(Dense(128, activation= 'relu', input_dim...
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