CityBrain
Smart City Infrastructure Intelligence & Impact Simulation
What it does
CityBrain: The Infrastructure Impact Engine It is a reasoning platform that simulates urban failure. While maps show what is there, we show what happens next. It bridges PostGIS spatial accuracy with Neo4j graph intelligence to predict how road failures ripple through a city in real-time "hops." Core Features: Impact Propagation: Simulate closures and see network-wide consequences. Risk Scoring: Automatic safety alerts for hospitals and zones.
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The Incident ChallengeMay 2026 · theincidentchallenge.com · ▲119Production Debugging Games for Software Engineers
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I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
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Thought the resources for GPU arch were lacking, so here we are
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Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.
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Life & fun · Apr 2026 · sam-burns.com
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With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.
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