https://tuixue.nl/blog/ Data, markets, and the space between models and decisions. en https://tuixue.nl/blog/asml-first-dcf.html https://tuixue.nl/blog/asml-first-dcf.html Fri, 01 Aug 2025 00:00:00 +0000 ASML is 45 minutes from my university. I used my own DCF calculator to value it from scratch — three scenarios, real numbers, and every place I was unsure. https://tuixue.nl/blog/bimodal-reality-of-cs.html https://tuixue.nl/blog/bimodal-reality-of-cs.html Tue, 15 Jul 2025 00:00:00 +0000 CS has two career tracks: research scientist and infrastructure engineer. The middle is hollow. https://tuixue.nl/blog/databricks-pipeline-notes.html https://tuixue.nl/blog/databricks-pipeline-notes.html Tue, 01 Jul 2025 00:00:00 +0000 Practical things I learned processing 10TB+ of aviation data — partition strategies, avoiding collect(), and why your notebook that works at 1GB will betray you at 100GB. https://tuixue.nl/blog/what-airbus-taught-me.html https://tuixue.nl/blog/what-airbus-taught-me.html Sun, 01 Jun 2025 00:00:00 +0000 I went to Airbus expecting to build models. Instead I spent most of my time cleaning SQL queries, arguing about chart colours, and learning that the hardest part of data work has nothing to do with data. https://tuixue.nl/blog/why-i-read-annual-reports.html https://tuixue.nl/blog/why-i-read-annual-reports.html Tue, 01 Apr 2025 00:00:00 +0000 Everyone says "data-driven." But most data work never touches the documents where real decisions get recorded. https://tuixue.nl/blog/from-loss-functions-to-decisions.html https://tuixue.nl/blog/from-loss-functions-to-decisions.html Sat, 01 Mar 2025 00:00:00 +0000 I spent two years optimising models and one year optimising slide decks. The slide decks changed more outcomes.