learn.xhelio.ai
Courses and books
Long-form material written to be read end to end, with the mathematics, the algorithms and the numbers left in.
Course
RL, from scratch to LLMs
Reinforcement learning from bandits and MDPs through PPO to RLHF, DPO, GRPO and agentic RL, with interactive demos, coding labs and narrated lessons.
Open the course → BookFinding Planets
Every way planets and planetary bodies are found, from Herschel's telescope and Neptune's prediction to shift-and-stack, orbit-space search, exoplanet methods and GPU algorithms.
Read the book →