AI and machine learning (ML) are often used interchangeably, but they’re not technically the same thing. However, the difference is smaller than you think, and once you understand it, you’ll never mistake the two again. The following is a very basic explanation and omits many technical aspects of AI vs ML which go beyond the scope of the intended audience. The following definitions and examples attempt to lay a foundation for further exploration of these topics. AI encompasses a wide range of technologies and techniques, including natural language processing, computer vision, robotics, and expert systems, in addition to machine learning. Machine learning, on the other hand, is a specific approach to building AI systems, which is based on the idea of enabling machines to learn from data without being explicitly programmed. Artificial Intelligence: The Entire Robot Artificial intelligence (AI) is a broad term that refers to creating machines that can perform tasks that normally require human intelligence. Examples of such tasks include visual perception, speech recognition, decision-making, and language translation. There are many subsets and subfields of AI that try to solve a specific problem and/or take a different approach to creating “intelligence”. Here are the five most recognized subsets of AI: focuses on enabling machines to understand, interpret, and generate human language. NLP is used in applications such as chatbots, voice assistants, and language translation. is an Natural Language Processing (NLP) ChatGPT NLP. is concerned with enabling machines to interpret and understand visual data from the world around them. Computer vision is used in applications such as object detection or facial recognition. Autonomous vehicles, like some Tesla models, use computer vision. Computer Vision develops machines that can physically and autonomously interact with the world around them to perform tasks like assembly line work or rescue operations. Boston Dynamics focuses on robotics. Robotics are designed to mimic the reason-based decision-making ability of an expert in a particular field, such as medical diagnosis or financial analysis. Expert systems are why you keep hearing about AI lawyers defending people in court. Expert Systems involves feeding data into a machine learning algorithm and allowing it to learn from that data to make accurate predictions or classifications about new data. Machine Learning So, ML is a subset of AI. That’s the first big difference to note. While AI is a term that encompasses a wide range of technologies and techniques, ML is a to building AI systems. specific approach It’s helpful to think of AI as the “entire robot”—a fully autonomous machine capable of thinking and acting like a human. However, each subset is only one part of the entire robot. Robotics attempts to develop the “body” for interacting with the environment. Computer vision gives the robot the ability to make visual sense of its world. NLP arms it with the power to communicate. ML bestows the faculty of learning. And expert systems send it to the university. It’s a true Frankenstein’s monster of disparate parts, but when brought together will finally realize the goal of AI. What’s Machine Learning? You hear a lot about ML because it’s a critical step in creating the entire robot. Almost everything we consider to be alive must be able to learn. Birds do it. Bees to it. Heck, even do it. But despite its ubiquity in the world of the living, learning is incredibly complex. Therefore, ML is taking on one of the biggest challenges, but it’s a triumph that offers the biggest ROI. Once we create a machine that learns, we can train it to make better decisions. So how do you create a machine to learn? amoebas ML uses statistical algorithms to enable machines to learn from data and improve their performance on specific tasks over time. ML algorithms analyze large amounts of data to identify patterns, which it uses to make predictions or decisions on new data. Like humans, ML is a process that requires that machines be “taught” by exposing them to information. ML Example: House Price Estimator Suppose you wanted to create an ML learning algorithm that predicts the price of a house based on its size and location. You would need two sets of data: a training set and a test set. First, we create a training set of data composed of recently sold houses with their sale price and location. The ML then processes the training data to look for patterns. After some processing, let’s say it “learned” the following “rules”: Houses larger than 2,000 sq ft sell for > $200K Houses less than 2,000 sq ft sell for < $200K Houses within 5 miles sell for < $100K of the airport Homes within 5 miles sell for > $300K of the lake The algorithm could then use this knowledge to predict the price of a house outside the training dataset (i.e., the test set). For example, a house that is: 2,500 sq ft and 3 miles from the airport. Since the new house is more than 2,000 sq ft, the algorithm would then apply the “> $200K” rule, but since it’s also , it would apply the “<$100K” rule. Therefore, the algorithm’s prediction would likely be “$150K”. less than 5 miles from the airport Next, the ML algorithm checks its guess against the price, which is $170K. It now has a $20,000 discrepancy it needs to resolve. It checks for more patterns and learns that, as houses of equal size get to the airport, they in price. Through some calculations, the program can determine the changes in price by proximity and apply the data as a weighted value in its next prediction. For example, maybe each mile closer to the airport equates to a 10% decrease in price. actual closer decrease The machine uses this constant process of guessing and checking (called backpropagation) to improve its predictions. The more iterations and inputs, the “smarter” the algorithm gets. “So what?”, you might ask, “Isn’t this simple logic? Why do we need a machine to do this?” Well, for one, ML can sift through data, find patterns, and test its guesses against real-world data at an astonishing rate. In short, it can “learn” much more quicker than humans. For another, it can juggle many more parameters than we ever could, so its guesses will inevitably be more accurate over time. Think about all the factors that go into the price of a house besides size and location. There’s the house’s age, condition, number of rooms, market conditions, and seller motivation just to name a few. But there are other less typical considerations like current interest rates, lot locations, or roof type. When you drill down further, you find that the actual number of factors is enormous. For example, what about the history of a house or the future of the neighborhood where it resides? The better our predictive capabilities, the more important these “lesser” considerations become. ML can iterate much faster and with greater detail than we can, making it more efficient at locating such “hidden” patterns. What if dark-colored houses sold for higher prices than light-colored ones? Maybe houses with more east-facing windows were cheaper than more west-facing ones. Machine learning can consider all these factors and then some—and do it in real-time. Finally, imagine adding to this learning algorithm the ability to search for, monitor, and collect house price information for a large region of the country. It would be a fully autonomous learning and predicting machine that would only get smarter the longer it worked. That’s where ML is today.

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