Data Science

Hands-on articles about R, SQL, Python, data cleaning, modeling, feature engineering, data products, and the practical structure behind analytical work.

The User Ordered Pizza. We Delivered Pierogi.

Data Semantics Starts Where Agreement on the Word Customer Ends

Negative Filtering: The Architecture of What We Refuse to Keep

Data Contracts: The Prenuptial Agreement Your Pipelines Need

The Hidden Missing: What Your Data Isn’t Telling You

How plumber Turns Your R Scripts into On-Demand Data Faucets

The Final Cut – Choosing the Right Features for the Job

Beyond the Numbers – Feature Engineering for Text Data

Timing is Everything – Feature Engineering for Time-Series Data

Cooking Temperatures Matter – Scaling & Transforming Numerical Data

Mastering the Spice Rack – Transforming Categorical Features

Feature Engineering 101: Prepping Your Ingredients for Success

Dormammu, I’ve Come to Iterate: R vs. Python in the Infinite Loop

Strategic Ranks and Groups: Mastering Data Battles with Ender’s Tactics

The Joy of Efficient Coding: RStudio Shortcuts and Tricks for Maximum Productivity

Building Blocks of R: From Vectors to Lists and Beyond

Data at Your Fingertips: Crafting Interactive Tables in R

Table It Like a Pro: Print-Ready Tables in R

R You Ready? Git Your Code Under Control!

SQL of the Rings: One Language to Query Them All (with R)

Why Every Data Scientist Needs the janitor Package

Writing R Code the ‘Good Way’

Joins Are No Mystery Anymore: Hands-On Tutorial — Part 3

Joins Are No Mystery Anymore: Hands-On Tutorial - Part 2

Joins Are No Mystery Anymore: Hands-On Tutorial — Part 1

Mastering purrr: From Basic Maps to Functional Magic in R

Shiny and Beyond: Mastering Interactive Web Applications with R and Appsilon Packages

The Rebus Code: Unveiling the Secrets of Regex in R

Ainulindalë in R: Orchestrating Data Pipelines for World Creation

Super Saiyan Data Skills: Mastering Big Data with R

Navigating the Data Pipes: An R Programming Journey with Mario Bros.

Crafting Elegant Scientific Documents in RStudio: A LaTeX and R Markdown Tutorial

Achieving Reporting Excellence: R Packages for Consistency and Diverse Outputs

Data Visualization Reloaded: Equipping Your Reports with the Ultimate R Package Arsenal

Arming Your Data Spaceship: Essential Quarto Tips and Tricks for the Modern Explorer

Navigating the Cosmos: Quarto, The Next Generation of Data Storytelling

Mastering the Arcane: Advanced RMarkdown for Magical Data Science

Navigating the Enchanted Forest of Data: A Tale of Reproducible Research with RMarkdown

The Analyst’s Odyssey: Transforming Data into Narratives

Navigating the Bayesian Landscape: From Concepts to Application

Shadow and Substance: Unveiling the Twin Mysteries of Correlation and Covariance

The Art of Estimation in R: Confidence Intervals Demystified

Hypothesis Testing in R: Elevating Your Data Analysis Skills

Probably More Than Chance: A Beginner’s Guide to Probability Distributions in R

Your Data’s Untold Secrets: An Introduction to Descriptive Stats with R

Old Art, New Code: The Typesetter’s Guide to Memoization

S(00)7 — Agent with License for OOP

A Beautiful Mind: Writing Testable R Code

Edge of Tomorrow: Preparing R Functions for the Unexpected

Catch Me If You Can: Exception Handling in R

Object-Oriented Express: Refactoring in R

The Fast and the Curious: Optimizing R

The Function Begins

Unearthing Golden Nuggets of Data: A RegEx Treasure Hunt in R

Boosting Your Data Weights: Training Accurate Models with tidymodels

From Standstill to Momentum: MLP as Your First Gear in tidymodels

Council of the Ents: How Random Forest in tidymodels Delivers Judgments

Paths of Destiny: The RPG of Decision Trees in Tidymodels

Decisions at the Door: Understanding Logistic Regression with Tidymodels

Walking the Line: Linear Regression’s Delicate Dance

Metaphors in Motion: Machine Learning Illustrated with Tidymodels

Parsnip: Where Machine Learning Models Snap Together Like LEGO Mindstorms

The Swiss Army Knife of Data Preprocessing: Unfolding the Layers of recipes package

Navigating the Future: Forecasting in the Era of Climate Change

Tidymodels: The Los Alamos of Data Science

Whisking Up Insights: A Culinary Approach to Understanding Statistical Modeling

Unearthing the Echoes of Time: Sales Trend Analysis with timetk

Soup-er Powers of Tidy Evaluation: Understanding rlang with a Culinary Twist

Composing Code: Striking a Chord with Functional and Object-Oriented Paradigms in R

From Hanger to Sky: Taking Flight with glue, janitor, and dbplyr

Time Weavers: Reign over Spinning Wheels of Time with lubridate

String Theory: Unraveling the Secrets of Textual Data with stringr

Organizing the Bookshelf: Mastering Categorical Variables with forcats

Symphony of Structures: A Journey through List-Columns and Nested Data Frames with purrr

Beyond the Basics: Unleashing ggplot2’s Extensions

The Sound of Silence: An Exploration of purrr’s walk Functions

Revealing Hidden Patterns: Statistical Transformations in ggplot2

Conquering Dissonance: Error Handling Strategies with purrr

The Art of Organization: Facets and Themes in ggplot2

Choreographing Data with Precision: Mastering purrr’s Predicates for Elegant R Performances