In this blog, we will learn some important facts or topics which is related to deep learning which is given below:
In this, we will cover some important and useful topics which are listed below.
This is a top useful machine learning application which is used for predicting the future preference of a set of items for a user and recommend the top items.
Let us suppose the real-life example like Netflix, it is a collection of a large number of movies then a new problem arose as people had a hard time selecting the items they actually want to see.
To overcome this problem the recommender system is used.
Methods used to build the recommender system
Machine Learning Classifiers
There are different types of classifiers, a classifier is an algorithm that maps the input data to a specific category. Now, let us take a look at the different types of classifiers:
Artificial Neural Networks/Deep Learning
Support Vector Machine
DeepFace Recognition In Machine Learning
It is a facial recognition system, which is used by Facebook for tagging images. It was proposed by researchers at Facebook AI Research (FAIR) at the 2014 IEEE Computer Vision and Pattern Recognition Conference (CVPR).
Below the four steps which are used to a recognition of face:
TensorFlow is an open-source machine learning framework. It is used for implementing machine learning and deep learning applications. It is created by the Google team for developing and research an idea on AI.
To designed the TensorFlow the python programming language is used hence it makes it easy to use.
Some of the key features of TensorFlow are:
Efficiently works with mathematical expressions involving multi-dimensional arrays
Good support of deep neural networks and machine learning concepts
GPU/CPU computing where the same code can be executed on both architectures
High scalability of computation across machines and huge data sets
Installing TensorFlow using “pip”
pip install tensorflow
import tensorflow as tf
Example: To calculate a simple linear function.
import tensorflow as tf x = tf.constant(-2.0, name="x", dtype=tf.float32) a = tf.constant(5.0, name="a", dtype=tf.float32) b = tf.constant(13.0, name="b", dtype=tf.float32) y = tf.Variable(tf.add(tf.multiply(a, x), b)) init = tf.global_variables_initializer() with tf.Session() as session: session.run(init) print(session.run(y))
If you know the other two important python library “Theano” and “TensorFlow” then we will now learn another important library which is used in python machine learning is “Keras”
It is a deep learning library that can run on top of Theano or TensorFlow.
It runs on both It runs on Python 2.7 or 3.5 and executes on GPUs and CPUs.
It installs using pip:
sudo pip install keras
It makes simple Keras model with few lines of code so it is better than other libraries like “TensorFlow” or “Theano”
from keras.models import Sequential from keras.layers import Dense, Activation model = Sequential() model.add(Dense(64, activation='relu', input_dim=50)) #input shape of 50 model.add(Dense(28, activation='relu')) #input shape of 50 model.add(Dense(10, activation='softmax'))
This is the new technology of deep learning artificial neural network(ANNs)
Convolutional Neural Networks (CNNs)
Long Short-Term Memory (LSTM)
Long Short Term Memory networks – usually just called “LSTMs” – are a special kind of RNN, capable of learning long-term dependencies. They were introduced by Hochreiter & Schmidhuber (1997). LSTMs are explicitly designed to avoid the long-term dependency problem.
LSTMs also have this chain-like structure, but the repeating module has a different structure. Instead of having a single neural network layer, there are four, interacting in a very special way.
Convolutional neural network (CNNs) is one of the main categories of deep learning neural network which is used to images recognition, images classifications. Objects detections, recognition faces, etc., are some of the areas where CNNs are widely used.
It also called ConvNet.
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