Theun van Vliet
Data Scientist · Amsterdam
I’m a freelance data scientist based in Amsterdam. I like helping people and businesses make better, more objective decisions, by combining what the data says with what people know and a good dose of common sense.
Most of my work is predictive modelling, experiments, and getting something useful out of messy data. Some of it ends up running in production, some of it stays an analysis that changes how someone sees a problem.
Beyond client work
I’m a co-founder of youai, a side project I run with friends. We bring art to life with AI, like animated talking portraits for museums.
I also built Time Blokker, a day-planning app for iOS and Android. You give your tasks a duration and it stacks them into your day, so you can see what actually fits before you promise it to anyone.
Selected projects
Aircraft Turnaround Prediction
Real-time predictive model for aircraft turnarounds at Schiphol, which grew into a commercial multi-airport product.
Confirmation Bias Detection in Performance Monitoring
Experiment to detect whether human annotators introduce confirmation bias in performance monitoring at Rabobank.
Lithium-Ion Battery Fire Risk Analysis
Analysing Battery Management System data to look for early indicators of fire risk in lithium-ion batteries.
Recurring Transaction Date Prediction
Predicting exact recurring transaction dates for banking customers using pattern detection.
Fiber Connection Permission Prediction
Predictive model and dashboard for fiber rollout planning at a Dutch telecom, with an RCT to test communication impact.
Customer Effort Score Journey Analysis
Analyzing how different parts of the customer journey affect Customer Effort Score at a Dutch energy provider.
Contract Information Extraction
ML model to extract structured information from contracts for the accounting team at a Dutch electronics firm.
Customer Acquisition Models for Telecom
Tech lead on acquisition models for door-to-door and telesales channels, achieving 30% lift in conversion.
Winback Pricing Optimization
Pricing optimization for winback offers at a UK media company, saving over £10 million.
CPG Market Sizing from Multiple Data Sources
Estimating product category market sizes across channels and shopper types by combining third-party data for a consumer goods client.
Analytics Delivery Lead for a UK Media Provider
Leading an offshore analytics team for a UK OTT media provider, working on churn, upsell, and pricing.
COVID-19 Spread Analysis for an NGO
Pro bono analysis of COVID-19 spread using Facebook mobility data, plus text analysis of online help requests.