# Scikit Learn Algorithm Cheat Sheet

Posted : admin On 1/29/2022Scikit-learn is a library in Python that provides many unsupervised and supervised learning algorithms. It’s built upon some of the technology you might already be familiar with, like NumPy, pandas, and Matplotlib! Choosing the right estimator¶. Often the hardest part of solving a machine learning problem can be finding the right estimator for the job. Different estimators are better suited for different types of data and different problems. Machine Learning: Scikit-learn algorithm This machine learning cheat sheet will help you find the right estimator for the job which is the most difficult part. The flowchart will help you check the documentation and rough guide of each estimator that will help you to know more about the problems and how to solve it. Machine Learning Cheat Sheet. Scikit-learn algorithm cheat-sheet STAR regression SVR(kernel-'rbf'J EnsembleRegressors WORKING important RidgeRegression (kernel -'linear) Isomap Spectral mbeddin WORKING svc Ensemble Classifiers WORKING N aive Bayes WORKING kernel approximation KNeighb0rs Classifier Text Data quantity looking structure Linear No number Of categories kno o you. Scikit-Learn Cheat Sheet Scikit learn is an open-source Machine Learning library in Python. It features various classification, regression and clustering algorithms including support vector machines, random forests, gradient boosting, k-means and DBSCAN. It has been designed to work in conjunction with NumPy and SciPy.

-->The **Azure Machine Learning Algorithm Cheat Sheet** helps you choose the right algorithm from the designer for a predictive analytics model.

Azure Machine Learning has a large library of algorithms from the * classification*,

*,*

**recommender systems***,*

**clustering***,*

**anomaly detection***, and*

**regression***families. Each is designed to address a different type of machine learning problem.*

**text analytics**For additional guidance, see How to select algorithms

## Download: Machine Learning Algorithm Cheat Sheet

**Download the cheat sheet here: Machine Learning Algorithm Cheat Sheet (11x17 in.)**

Download and print the Machine Learning Algorithm Cheat Sheet in tabloid size to keep it handy and get help choosing an algorithm.

## How to use the Machine Learning Algorithm Cheat Sheet

The suggestions offered in this algorithm cheat sheet are approximate rules-of-thumb. Some can be bent, and some can be flagrantly violated. This cheat sheet is intended to suggest a starting point. Don’t be afraid to run a head-to-head competition between several algorithms on your data. There is simply no substitute for understanding the principles of each algorithm and the system that generated your data.

Every machine learning algorithm has its own style or inductive bias. For a specific problem, several algorithms may be appropriate, and one algorithm may be a better fit than others. But it's not always possible to know beforehand which is the best fit. In cases like these, several algorithms are listed together in the cheat sheet. An appropriate strategy would be to try one algorithm, and if the results are not yet satisfactory, try the others.

To learn more about the algorithms in Azure Machine Learning designer, go to the Algorithm and module reference.

## Sklearn Algorithm Cheat Sheet

## Kinds of machine learning

There are three main categories of machine learning: *supervised learning*, *unsupervised learning*, and *reinforcement learning*.

### Supervised learning

In supervised learning, each data point is labeled or associated with a category or value of interest. An example of a categorical label is assigning an image as either a ‘cat’ or a ‘dog’. An example of a value label is the sale price associated with a used car. The goal of supervised learning is to study many labeled examples like these, and then to be able to make predictions about future data points. For example, identifying new photos with the correct animal or assigning accurate sale prices to other used cars. This is a popular and useful type of machine learning.

### Unsupervised learning

In unsupervised learning, data points have no labels associated with them. Instead, the goal of an unsupervised learning algorithm is to organize the data in some way or to describe its structure. Unsupervised learning groups data into clusters, as K-means does, or finds different ways of looking at complex data so that it appears simpler.

### Reinforcement learning

## Understanding Algorithms For Beginners Pdf

In reinforcement learning, the algorithm gets to choose an action in response to each data point. It is a common approach in robotics, where the set of sensor readings at one point in time is a data point, and the algorithm must choose the robot’s next action. It's also a natural fit for Internet of Things applications. The learning algorithm also receives a reward signal a short time later, indicating how good the decision was. Based on this signal, the algorithm modifies its strategy in order to achieve the highest reward.

## Next steps

## Python Algorithm Cheat Sheet

See additional guidance on How to select algorithms

Learn about studio in Azure Machine Learning and the Azure portal.

Tutorial: Build a prediction model in Azure Machine Learning designer.

Learn about deep learning vs. machine learning.