Data Analysis

Build a better retention shortlist

S-Mobile · Churn prediction and probability calibration

Correct an oversampled churn model, then check risk concentration and calibration on an independent customer sample.

FiTech · Credit-card offer design and campaign optimization

Combine response, customer lifetime value, and design costs to choose the right offer for each segment.

Pentathlon · Next-product recommendations using expected contribution

Model purchase probability and order size together to improve expected contribution across six department messages.

Creative Gaming · Uplift modeling for the Zalon campaign

Separate persuadable players from people who would convert anyway, then optimize audience depth for incremental profit.

Intuit QuickBooks · Upgrade response and mailing economics

Choose the model through campaign economics and expected profit, not AUC alone.

Tuango · Mobile offer targeting and campaign profitability

Turn the hidden cost of customer messaging into a profitable rollout policy.

A/B Testing · Conversion estimates, uncertainty, and peeking risk

Build intuition for estimation, uncertainty, bootstrap inference, and peeking risk through simulation.

Card–Krueger Replication · Difference-in-differences in employment

Replicate Card and Krueger's natural experiment in fast-food restaurants.

Blueprinty · Poisson regression and adjusted customer associations

Estimate Blueprinty's association with patent outcomes using Poisson regression.

MaxDiff · Best–worst choice analysis of course preferences

Turn Best-Worst choices into relative preference estimates across three modeling approaches.