Writing

2024

• Don't stop as soon as you hit stat sig! How to safely stop an experiment early with alpha spending in Python

  July 10 - 16 minute read

• Building your own sklearn transformer is easy and very useful

  January 2 - 6 minute read

2023

• Elasticity and log-log models for practicing data scientists

  December 12 - 10 minute read

• Is my regression model good enough to make decisions? Evaluating actual vs predicted plots and relative error of regression models

  September 24 - 8 minute read

• Flexible prediction intervals: Quantile Regression in Python

  April 28 - 9 minute read

2022

• How did my treatment affect the distribution of my outcomes? A/B testing with quantiles and their confidence intervals in Python

  June 11 - 14 minute read

2021

• Symbolic Calculus in Python: Simple Samples of Sympy

  August 4 - 7 minute read

• Describing and Forecasting time series: Autoregressive models in Python

  July 21 - 10 minute read

• Machine learning models for decision making in Python: Picking thresholds for asymmetric payoffs

  July 10 - 12 minute read

• What customer group drove the change in my favorite metric? Exact decompositions of change over time

  March 3 - 12 minute read

2020

• Partial dependence plots are a simple way to make black-box models easy to understand

  November 27 - 24 minute read

• Would collecting more data improve my model's predictions? The learning curve and the value of incremental samples

  October 4 - 8 minute read

• Understanding the difference between prediction and confidence intervals for linear models in Python

  September 26 - 14 minute read

• When do we log transform the response variable? Model assumptions, multiplicative combinations and log-linear models

  August 30 - 11 minute read

• The False-Discovery Rate: An alternative to the FWER for multiple comparisons

  August 9 - 9 minute read

• Getting started with multiple hypotheses - Methods that control the FWER and their costs

  July 22 - 18 minute read

• Picking the model with the lowest cross validation error is not enough

  July 7 - 11 minute read

2015

• .

  October 10 - less than 1 minute read

2014

• ..

  January 1 - less than 1 minute read