Updated: Aug 23, 2021
If deep learning is a subset of machine learning, how do they differ? Deep learning is distinguished from classical machine learning by the type of data it works with and the methods it learns.
Machine learning algorithms use structured, tagged data to make predictions. This means that certain properties are defined from input data for the model and organized into tables. This does not mean that it does not use unstructured data. This simply means that, if so, it usually goes through some preprocessing to edit it in a structured format.
Deep learning eliminates some data preprocessing, usually related to machine learning. These algorithms can retrieve and process unstructured data, such as text and images, and automate feature extraction, eliminating some of the trust in human experts. For example, different pets and “cat”, “dog”, “hamster”, etc.we know we have a series of photos. suppose we want to categorize this. Deep learning algorithms can determine which traits (e.g. ears) are most important to distinguish each animal from the other. In machine learning, this hierarchy of features is set manually by a human expert.
Then, through the gradient descent and back propagation processes, the deep learning algorithm adjusts and adapts itself to accuracy, thus allowing it to make predictions about a new photograph of an animal with greater precision.
Machine learning and deep learning models also have different types of learning, often categorized as supervised learning, unsupervised learning, and reinforcement learning. Supervised learning uses labeled datasets to categorize or make estimates that require some kind of human intervention to accurately label input data. In contrast, unsupervised learning does not require labeled datasets, and instead detects patterns in the data, setting them with any distinguishing features. Enhanced learning is a process in which a model learns to be more accurate in performing an action in a feedback-based environment to maximize reward.