A personal knowledge garden
Yufeng Hub
Read, thought through, written down. Notes, papers and project records — all growing here.
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- RoboticsAction Tokenization: Discretizing Continuous ActionsThe chain "continuous action → discrete token → continuous action", unpacked into the background each link requires — π₀-FAST's discrete autoregressive route against FSQ, Binning and flow matching.
- Start hereThe self-description of yufeng-hub — a personal knowledge garden, how its notes are organized, how public and private are drawn, and where the content comes from.
- Machine LearningAutoregressive Models: BERT / GPT and Prefix-LMWhich sequence-modelling paradigms exist, what separates BERT from GPT, and why robot VLAs such as π₀-FAST use a hybrid of the two called Prefix-LM.
Explore by domain
- Machine LearningModels, training, generative methods and the intuition behind them3 notes
- RoboticsEmbodied AI: manipulation, perception, VLAs and teleoperation4 notes
- MathematicsLinear algebra, probability, optimization — math for engineering3 notes
- ProgrammingLanguages, systems, toolchains and engineering practiceto be planted
- InfrastructureServers, networking, deployment — everything self-hostedto be planted