Samouczki data science

Learn how to calculate the total sum of squares (SST), regression sum of squares (SSR), and error sum of squares (SSE) to evaluate regression model accuracy. Discover their mathematical relationships and how they impact R-squared.

Discover how to interpret adjusted r-squared to evaluate regression model performance. Compare the difference between r-squared and adjusted r-squared with examples in R and Python.

Discover how to use the ANOVA test to compare multiple groups means with clear examples, real-world applications, and practical tips for data analysis.

Eigenvectors and eigenvalues are essential for understanding linear transformations. This article covers their geometric interpretation, mathematical calculation, and importance in machine learning.

Learn how Python automatically manages memory with reference counting and generational garbage collection, and understand how to manually control garbage collection using the gc module.

Explore how Euclidean distance bridges ancient geometry and modern algorithms, with coding examples in Python and R, and learn about its applications in data science, machine learning, and spatial analysis.

Discover the mean shift clustering algorithm, its advantages, real-world applications, and step-by-step Python implementation. Compare it with K-means to understand key differences.

The Poisson distribution models the probability of a certain number of events occurring within a fixed interval. See how it's applied in real-world scenarios like queueing theory and traffic modeling.

Learn the key components of the ARIMA model, how to build and optimize it for accurate forecasts in Python, and explore its applications across industries.

Discover how CatBoost simplifies the handling of categorical data with the CatBoostClassifier() function. Understand the key differences between CatBoost vs. XGBoost to make informed choices in your machine learning projects.

Learn how Chebyshev distance offers a unique approach to spatial problems. Uncover its applications in robotics, GIS, and game development with coding examples in Python and R.

Learn how to implement binary search in Python using iterative and recursive approaches, and explore the built-in bisect module for efficient, pre-implemented binary search functions.