Vincent Favour
5 min readMar 2, 2023

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5 Machine Learning Algorithms Every Data Scientist Should Master in 2023 with Example Datasets

One of the most critical factors that a data scientist must consider when it comes to developing and implementing machine learning techniques is keeping up with the latest algorithms.

Being up-to-date with the latest machine learning techniques is very important for any data scientist, as it allows them to perform well in their field. In this post, we’ll discuss ten of the most popular machine learning algorithms that will be utilized in 2023.

One of the most common methods that’s used in machine learning is

1️⃣ Linear Regression

This is a simple and effective method for forecasting continuous variables based on one or more predictor variables.

It’s a good starting point for many data science projects and can be applied to several datasets.

One example is the Boston Housing dataset, which contains information about various attributes of houses in Boston, such as the number of rooms, crime rate, distance to employment centers, and the corresponding median value of owner-occupied homes in thousands of dollars.

To apply linear regression to this dataset, one could use the number of rooms as the predictor variable and the median value as the target variable.

The goal is to create a model that can predict the median value of a house based on its number of rooms. Fun right? 😁

This model could be useful for real estate agents or home buyers looking to estimate the value of a house based on its attributes.

2️⃣ Logistic Regression

Logistic regression is a classification algorithm that predicts discrete outcomes based on one or more predictor variables.

It’s commonly used in binary classification problems, such as the famous Titanic dataset and also Weather prediction datasets.

For the titanic dataset which is a rampant data set, it contains information about the passengers on the Titanic, including their age, sex, and class, and whether they survived the disaster or not.

To apply logistic regression to this dataset, one could use various predictor variables such as age, sex, and class, to predict whether a passenger survived or not.

The goal would be to create a model that can accurately predict the survival of a passenger based on their attributes.

This model could be useful for analyzing the factors that contributed to the survival of passengers on the Titanic.

3️⃣ Decision Trees

Decision trees are a popular algorithm for both classification and regression problems.

They are intuitive to interpret and can handle both categorical and numerical data.

One example dataset is the Iris dataset, which contains information about various attributes of Iris flowers, such as the length and width of their petals and sepals, and the corresponding species (setosa, versicolor, or virginica).

To apply decision trees to this dataset, one could use the attributes of the petals and sepals to predict the species of the flower. The goal would be to create a model that can accurately predict the species of an Iris flower based on its attributes.

This model could be useful for botanists or flower enthusiasts looking to identify different types of Iris flowers.

4️⃣ Random Forest

Random forest is an ensemble learning algorithm that combines multiple decision trees to improve accuracy and reduce overfitting. It’s a powerful algorithm for both classification and regression difficulties and can handle large datasets with high dimensionality. One instance dataset is the MNIST dataset, which contains images of handwritten digits and their corresponding labels.

To apply random forest to this dataset, one could use the pixel values of the images as the predictor variables and the digit labels as the target variable.

The goal would be to create a model that can accurately classify the digits based on their images.

This model could be useful for recognizing handwritten digits in various applications.

5️⃣ Naive Bayes

Naive Bayes is a probabilistic algorithm for classification problems.

It works by calculating the probability of each class given the predictor variables and selecting the class with the highest probability.

One example dataset is the Spam dataset, which contains emails labeled as spam or not spam, along with their contents.

To apply Naive Bayes to this dataset, one could use the contents of the emails as the predictor variable and the spam or not spam label as the target variable.

The goal would be to create a model that can accurately classify emails as spam or not spam based on their contents.

This model could be useful for email providers or individuals looking to filter unwanted emails.

Conclusion

We have discussed five important machine learning algorithms that every data scientist should master in 2023.

We have provided a brief overview of each algorithm, along with an example dataset and the corresponding target variable. We have also included code snippets to help get you started with each algorithm.

It’s important to note that the choice of algorithm depends on the problem at hand, and it’s always a good idea to try out multiple algorithms and compare their performance before making a final decision.

With that said, mastering these five algorithms will certainly be a great starting point for any data scientist looking to enhance their machine learning skills in 2023.

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Thanks you.

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Vincent Favour

Talks about Programming, Data science, Inspiration quotes and Academic Affairs. Reach me on twitter : @ogboifavour