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KNN: What is the KNN Algorithm ?
The K-Nearest Neighbors (KNN) algorithm is a machine learning algorithm belonging to the class of simple and easy-to-implement supervised learning algorithms. It can be used to solve classification and regression problems. In this article, we will delve into the definition of this algorithm, how it works, and provide a practical programming application. KNN : Definition […]
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Alteryx: What is it? How does it work?
In the digital age, businesses collect thousands of pieces of data every day, which are essential to their development. As technology develops, more and more data is created, to the point where analysing it becomes back-breaking. To make this task easier, many tools, such as Alteryx, offer to centralise and analyse the newly formed data. […]
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“train_test_split: Tutorial on how to use this function
A Machine Learning model is capable of learning autonomously from one dataset, with the aim of predicting behavior on another dataset. To do this, it finds underlying relationships between independent explanatory variables and a target variable in the initial dataset. It then uses these patterns to predict or classify new data. How do I define […]
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Recommendation algorithm: What is it? How does it work?
When YouTube recommends videos that match our current interests, or when Amazon suggests products we might find intriguing, what mechanisms are at play? Recommendation algorithms. These are highly intricate systems developed to further personalize the user experience, though with the potential risk of producing sometimes undesirable effects of polarization. They also spark debates regarding the […]
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Open SQL file : Complete tutorial
SQL files (Structured Query Language) hold code that outlines the structure and contents of a database. Opening a SQL file facilitates the execution of code to modify the database’s contents. The SQL file also includes commands for creating content, inserting, deleting, splitting, or updating data. Accessing a SQL file is swift when using MySQL or […]
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How do I merge tables in Power Query?
Confronted with numerous sources of data, data experts need to identify the relationships between different pieces of information. To do this, they can merge two tables with Power Query. This query editor simplifies the task of data modeling, for more efficient and reliable analysis. What is the merge function in Power Query? Merging tables in […]
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Standard deviations in Excel: What’s it for? How do I calculate it?
To analyze a set of numerical data, the mean is often used. However, this parameter has some shortcomings that do not always reflect the reality of the data. Fortunately, other statistical tools allow for a deeper analysis. This is notably the case with the standard deviation. So, what is it? What is its purpose? And […]
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K-Means Clustering in Machine Learning: A Deep Dive
Clustering is a specialized discipline within Machine Learning aimed at separating your data into homogeneous groups with common characteristics. It’s a highly valued field, especially in marketing, where there is often a need to segment customer databases to identify specific behaviors. The K-means algorithm is a well-known unsupervised algorithm in the realm of Clustering. In […]
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Dust: What is it? How can it be used for prompt engineering?
With the proliferation of generative AI tools, mastering the art of writing prompts is proving more than essential. But at the speed at which artificial intelligence solutions are evolving, many users are feeling lost. That’s when Dust was born. This prompt engineering tool helps users not only to write relevant guided messages, but also to […]
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Kimball Method: What is it? How do I use it?
<p>The volume of data generated and used by companies continues to grow exponentially. In this context, the efficient structuring and organization of this data for optimal analysis is of paramount importance. Dimensional modeling is an inescapable solution to this challenge. It is a methodological approach to the design of data warehouses. Ralph Kimball, a pioneer […]</p>
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U-NET: Computer Vision’s neural network
<p>U-NET is a neural network model dedicated to Computer Vision tasks and more particularly to Semantic Segmentation problems. Discover all you need to know: presentation, functioning, architecture, advantages, training… Artificial intelligence is a broad technology with many branches. Computer Vision is one of these sub-categories. It is an interdisciplinary scientific field that aims to enable […]</p>
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Power Query Date Format: How to change it on Excel and Power BI
<p>There are different ways to change the Power Query Date Format for Microsoft Excel or Power BI: an indispensable task for data analysis and Business Intelligence. Find out everything you need to know! When collecting data from different sources, it’s not uncommon to be confronted with dates in different formats. This can cause problems. That’s […]</p>
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