Coursera Learner working on a presentation with Coursera logo and
Coursera Learner working on a presentation with Coursera logo and

Machine learning is an artificial intelligence (AI) application that provides systems with the ability to learn and improve automatically from the experience itself without being explicitly programmed. Machine learning focuses on the development of computer programs that can access data and use it to learn by themselves.

This learning process begins with observations or data, like examples, first-hand experience, or instructions, in an effort to look for patterns in the data and make better decisions in the future based on the examples we provide. Your primary goal is to enable computers to learn automatically without human intervention or assistance and to adapt actions accordingly.

Supervised machine learning algorithms can applicate what has been learned in the past to the new data using labelled examples to predict future events. Starting from the analysis of a known training data set, the learning algorithm produces a deduced function to make predictions about output values. t can provide targets after sufficient training for each new input. The learning algorithm can also compare its output with the correct and predicted output and find errors to modify the model accordingly.

In contrast, unsupervised machine learning algorithms are used when the information used for training is neither classified nor labelled. Unsupervised learning studies how systems can infer a function to describe a structure hidden by unlabelled data. The system does not understand the right outcome, but explores the data and can derive inferences from data sets to describe structures hidden by untagged data.

The semi-supervised machine learning algorithms are halfway between supervised and unsupervised learning because they use both labeled and unlabeled data for training – typically a small amount of labeled data and a large amount of unlabeled data. The systems that use this method are capable of greatly improving the accuracy of learning. Usually, semi-supervised learning is chosen when the labelled data acquired requires qualified and relevant resources in order to train/learn from it. Otherwise, the acquisition of non-labelled data generally does not require additional resources.

Reinforcing machine learning algorithms are a learning method that interacts with the surrounding environment producing actions and discovering errors or rewards. The search for trial and error and delayed rewards are the most relevant features of reinforcement learning. It enables machines and software agents to automatically determine the ideal behavior within a specific context to maximize its performance. Simple reward feedback is necessary for the agent to learn which action is best; this is known as a reinforcement signal.

The machine learning allows for the analysis of huge amounts of data. While it typically provides faster and more accurate results to identify profitable opportunities or dangerous risks, it can also require additional time and resources to train him properly. Combining machine learning with artificial intelligence and cognitive technologies can make it even more effective in processing large volumes of information.