Classification vs Regression: An Easy Guide in 6 Points


Even with skilled and seasoned data scientists, the discrepancies will quickly confuse, and this makes it difficult to apply the correct solution. In this discourse, we will take a deeper dive into the distinctions and parallels with the two essential classification vs regression data science algorithms.

In solving data science problems, finding the right strategy is of vital significance and can always mean the difference between jumbling up and coming up with the right answer. In the beginning, data scientists frequently seem to confuse between the two – unable to find out the tiny technical specifics that are necessary to attack the issue with the correct solution.

In this article let us look at:

  1. Classification and Regression Difference
  2. What is Classification?
  3. Types of Classification Algorithms
  4. What is Regression?
  5. Types of Regression Algorithm
  6. Classification vs Regression 

1. Classification and Regression Difference

Classification and Regression algorithms are Supervised Learning algorithms. Both the algorithms can be used for forecasting in Machine learning and operate with the labelled datasets. But the distinction between classification vs regression is how they are used on particular machine learning problems.

The key distinction between Classification vs Regression algorithms is Regression algorithms are used to determine continuous values such as price, income, age, etc. and Classification algorithms are used to forecast or classify the distinct values such as Real or False, Male or Female, Spam or Not Spam, etc.

Classification and Regression in machine learning are two major forecasting issues that are typically dealt with by machine learning and Data Mining.

2. What is Classification?

Classification is the process of discovering or identifying a design or role, which helps to separate them into several categorical classes, i.e. discrete values. In classification, data is labelled under different labels according to certain parameters given in input, and then the labels are projected for the data.

The derived mapping function may be illustrated in the context of the “IF-THEN” law. The classification process deal with the classification problem where the data can be separated into single or numerous discrete labels.

Let’s take an example of classification, suppose there is a match going on, and we want to predict the probability of the winning Team on the basis of some parameters reported earlier. Then there will be two signs, Yes and No. You use logistic regression vs classification to estimate the probability of a data-point belonging either to Team A or class B. 

3. Types of Classification Algorithms

These are the types of Classification Algorithms:

  • Logistic Regression 
  • K-Nearest Neighbours
  • Support Vector Machines
  • Kernel SVM
  • Naïve Bayes
  • Decision Tree Classification
  • Random Forest Classification

4. What is Regression?

Regression is the method of discovering a function or a model for separating the real values data instead of using distinct values or groups. It may also classify the distribution movement based on historical evidence. Since a regression model predicts a quantity, thus, the ability of the operator must be reported as an error in such predictions.

Let’s take a similar example in regression too, where we are finding the probability of rainfall in some specific regions with the aid of some parameters reported earlier. Then there is a chance correlated with the rain.

5. Types of Regression Algorithm

These are the types of Regression Algorithms:

  • Simple Linear Regression
  • Multiple Linear Regression
  • Polynomial Regression
  • Support Vector Regression
  • Decision Tree Regression
  • Random Forest Regression

6. Classification vs Regression 

Below are the head to head difference between classification vs regression, and the points are :

Classification Algorithm Regression Algorithm
The mapping function is used for assigning values to predefined groups. The mapping function is used for the assignment of values to continuous output.
In Classification, the output element must be a discrete attribute. In Regression, the output element must be of the constant type of real value.

The role of the classification algorithm is to map the input value(x) with the discrete output variable(y). 
The role of the regression algorithm is to map the continuous output variable(y) with the input value (x).
Classification Algorithms are used for discrete data. Regression Algorithms are used for continuous data.
In Classification, we strive to locate the judgment limit, which may split the dataset into different classes. In Regression, we strive to find the best match rows, which can forecast the performance more accurately.
Classification Algorithms may be used to solve classification problems such as Voice Recognition, Identification of spam emails, Identification of cancer cells, etc. Regression algorithms may be used to solve the regression problems such as House price prediction, Weather Prediction,  etc.
The Classification algorithms can be classified into Multi-class Classifier and Binary Classifier.  The regression Algorithm can be further separated into Non-linear and Linear Regression.



Both these methods should be important instruments in the arsenal of any data scientists in solving market problems. Hence, a critical understanding is essential to pick the right models, do the necessary fine-tuning, and deploy the right solution that will provide a boost to your company.

There are no right or wrong ways of learning AI and ML technologies – the more, the better! These valuable resources can be the starting point for your journey on how to learn Artificial Intelligence and Machine Learning. Do pursuing AI and ML interest you? If you want to step into the world of emerging tech, you can accelerate your career with this Machine Learning And AI Courses by Jigsaw Academy.



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