Types of Machine Learning

Data Science, AI and ML
#1

Machine learning is the study of computer algorithms that improve automatically through experience and by the use of data. It is seen as a part of artificial intelligence.

Types Of Machine Learning

Supervised learning: A training set of examples with the correct responses (targets) is provided and, based on this training set, the algorithm generalizes to respond correctly to all possible inputs. This is also called learning from exemplars.

Unsupervised learning: Correct responses are not provided, but instead the algorithm tries to identify similarities between the inputs so that inputs that have something in common are categorized together. The statistical approach to unsupervised learning is known as density estimation.

Reinforcement learning: This is somewhere between supervised and unsupervised learning. The algorithm gets told when the answer is wrong, but does not get told how to correct it. It has to explore and try out different possibilities until it works out how to get the answer right. Reinforcement learning is sometime called learning with a critic because of this monitor that scores the answer, but does not suggest improvements.

#2

Description of types of Machine learning

The Supervised machine learning: In supervised machine learning, the data scientist must train the system with both labelled inputs and desired outputs.The following tasks benefit from supervised learning algorithms:

Binary classification is the division of data into two groups. Choosing between more than two categories of answers is referred to as multi-class classification. Predicting continuous values using regression modelling. Combining the predictions of numerous machine learning models to get an accurate prediction is referred to as assembling.

Unsupervised Machine Learning: Machine learning methods that are unsupervised do not require data to be labelled. They dig through unlabeled data in search of patterns that can be utilised to divide data into subgroups. Unsupervised algorithms make up the majority of deep learning algorithms, including neural networks. The following tasks are well-suited to unsupervised learning algorithms:

Clustering: Dividing a dataset into groups based on their similarity.
Anomaly detection: identifying unexpected data points in a set of data.
Association mining: Identifying groups of objects in a data collection that commonly occur together
Dimensionality reduction: Reducing the number of variables in a data set

Semi-Supervised Learning: Data scientists input a limited quantity of labeled training data to an algorithm in semi-supervised learning. The algorithm then learns the data set’s dimensions, which it may subsequently apply to new, unlabeled data. When algorithms are trained on labeled data sets, their performance usually improves. Labeling data, on the other hand, can be time consuming and costly. Semi-supervised learning falls between supervised and unsupervised learning in terms of performance and efficiency. Semi-supervised learning is utilized in the following areas:

Machine translation : teaching algorithms to translate languages using a smaller set of words than a full dictionary.

Fraud detection: identifying cases of fraud when there are just a few positive examples available.

Data labeling: Algorithms trained on tiny data sets can automatically apply data labels to bigger ones.

Reinforcement learning

Reinforcement learning is based on the programming of an algorithm with a specific goal and a set of rules for achieving that objective. The algorithm is also programmed to seek positive rewards (which it receives when it performs an activity that helps it get closer to its ultimate objective) and avoid negative rewards (which it receives when it performs an action that causes it to get further away from its ultimate goal). Reinforcement learning is widely employed in a variety of fields, including:

Robotics: Using this method, robots may learn to do tasks in the physical environment. Reinforcement learning has been used to train bots how to play a variety of video games.

Resource management: When faced with limited resources and a clear aim, reinforcement learning can assist businesses in determining how to allocate resources.