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Data Science Tutorials
Advance your data career with our data science tutorials. We walk you through challenging data science functions and models step-by-step.
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Bernoulli Distribution: A Complete Guide with Examples
Discover how the Bernoulli distribution captures binary outcomes and is applied in everything from coin flips to customer predictions.
Vinod Chugani
August 22, 2024
T-test vs. Z-test: When to Use Each
Use t-tests when dealing with small samples or unknown variance, and Z-tests when samples are large and variance is known.
Arunn Thevapalan
August 15, 2024
Hypothesis Testing Made Easy
Hypothesis testing is a statistical method used to evaluate claims about populations based on sample data.
Vinod Chugani
August 15, 2024
QR Decomposition in Machine Learning: A Detailed Guide
Learn about QR decomposition, the matrix factorization technique that decomposes matrix A into the product of an orthogonal matrix Q and an upper triangular matrix R.
Josef Waples
August 9, 2024
What is Cosine Distance?
Explore cosine distance and cosine similarity. Discover calculations, applications, and comparisons with other metrics. Learn to implement in R and Python using numpy.
Vinod Chugani
July 28, 2024
What is Manhattan Distance?
Learn how to calculate and apply Manhattan Distance with coding examples in Python and R, and explore its use in machine learning and pathfinding.
Vinod Chugani
July 17, 2024
The Complete Guide to Data Version Control With DVC
Learn the fundamentals of data version control in DVC and how to use it for large datasets alongside Git to manage data science and machine learning projects.
Bex Tuychiev
July 14, 2024
Big O Notation and Time Complexity Guide: Intuition and Math
Time complexity is the measure of how an algorithm's runtime scales with input size, often expressed using Big-O notation, which provides an upper bound on the worst-case scenario.
François Aubry
July 8, 2024
How to Write Memory-Efficient Classes in Python
Learn about memory management in Python with advanced techniques for coding memory-efficient classes. Explore practical exercises for optimal performance.
Arunn Thevapalan
July 4, 2024
Cohere Command R+: A Complete Step-by-Step Tutorial
Explore Cohere Command R+ online and locally, learn about the unique features of the Cohere Python API, and build a multi-step AI agent using LangChain and Cohere.
Abid Ali Awan
July 3, 2024
How to Save a Pandas DataFrame to CSV
In Pandas, you can save a DataFrame to a CSV file using the df.to_csv('your_file_name.csv', index=False) method, where df is your DataFrame and index=False prevents an index column from being added.
Tudor Mărginean
June 26, 2024
What Is One Hot Encoding and How to Implement It in Python
One-hot encoding is a technique used to convert categorical data into a binary format where each category is represented by a separate column with a 1 indicating its presence and 0s for all other categories.
Dr Ana Rojo-Echeburúa
June 26, 2024