Deep learning is a specific type of machine learning algorithm that uses multi-level neural networks.

A neural network is an algorithm that simulates the structure of the brain by having nodes (neurons) and relationships (dendrites). A neural network solves a problem by converting the problem into a set of input nodes, a set of output nodes, and a set of intermediate or "hidden" nodes. Deep learning is just a neural network with multiple intermediate layers of nodes.

Machine learning is the subset of artificial intelligence that deals with computers learning to solve problems, and optimize solutions by analyzing data instead of being directly programmed.

There are many different types of machine learning algorithms, including deep learning, generic algorithms, reinforced learning, and many others. Any algorithm that can modify itself and learn from its data can be considered machine learning.

Artificial Intelligence is the field of computer science that deals with algorithms and technology for implementing and simulating complex cognitive tasks.

Artificial Intelligence includes many types of algorithms, including deep learning, genetic algorithms, fuzzy logic, state machines, expert systems, and many more.

An Artificial Intelligence or AI bot is one that is attempting to be an intelligent entity.

AI bots have been made famous by movies and include such bots as:

A Twitterbot is a bot that automates a Twitter account. Twitter bots can post Tweets, retweet posts, reply to mentions or other tweets, and reply to direct messages.

There are many bots on Twitter, used for customer service, marketing, information, and fun.

A knowledge bot is a bot that attempts to answer questions about general facts, or a specific domain.

Types of knowledge bots include:

• search bots
• math bots

A virtual agent is a term typically used to describe a type of chat bot used for business.

A virtual agent could be a virtual sales agent, a virtual customer service agent, or other type of virtual agent.  It is basically a automated version of a typical human employee and attempts to perform the same functions.