Book Image

Neural Network Projects with Python

By : James Loy
Book Image

Neural Network Projects with Python

By: James Loy

Overview of this book

Neural networks are at the core of recent AI advances, providing some of the best resolutions to many real-world problems, including image recognition, medical diagnosis, text analysis, and more. This book goes through some basic neural network and deep learning concepts, as well as some popular libraries in Python for implementing them. It contains practical demonstrations of neural networks in domains such as fare prediction, image classification, sentiment analysis, and more. In each case, the book provides a problem statement, the specific neural network architecture required to tackle that problem, the reasoning behind the algorithm used, and the associated Python code to implement the solution from scratch. In the process, you will gain hands-on experience with using popular Python libraries such as Keras to build and train your own neural networks from scratch. By the end of this book, you will have mastered the different neural network architectures and created cutting-edge AI projects in Python that will immediately strengthen your machine learning portfolio.
Table of Contents (10 chapters)

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...