Senior data scientist working on noisy real-world sensor data. Moving toward neurotech and biosignal applications.https://bkowshik.in/https://bkowshik.in/posts/from-86-to-71-trusting-a-brain-decoder/https://bkowshik.in/posts/from-86-to-71-trusting-a-brain-decoder/I trained a tiny CNN to read MEG brain signals on Colab. The interesting part wasn't the model — it was how stratified splits, checkpoint hygiene, and cross-validation deflated a flattering 86% into an honest 71% ± 5%, and revealed exactly where the model wins.Sun, 14 Jun 2026 07:00:00 GMThttps://bkowshik.in/posts/how-i-use-google-colab/https://bkowshik.in/posts/how-i-use-google-colab/Notes and recipes from my day-to-day Google Colab workflow — setup, data handling, and package installs.Wed, 10 Jun 2026 03:30:00 GMT