Posts by Go

A practical guide to wiring Serena into Claude Code and tracking token usage and cost with ccusage, including current commands.

Use a Google service account to sign and verify M2M JWTs with custom claims, with a working NestJS example.

Testing whether a time series is a martingale using Black-Scholes simulation, permutation entropy, and Welch's PSD method.

The math behind diffusion models: Chapman-Kolmogorov, Kramers-Moyal, Ito's lemma, and the forward/reverse SDEs.

How GRPO turns next-token prediction into a reinforcement learning objective, derived step by step from the Transformer forward pass.

A design sketch for combining Titan's surprise-based memory with Transformer² SVD fine-tuning, with the math worked out and no experiments run yet.

How SakanaAI's Transformer² adapts LLM weights at inference time via SVD fine-tuning, RL, and expert weight combination, mapped from paper to code.

Keep IndexedDB and Pglite out of SSR with TanStack Router's ClientOnly, avoiding the classic null database instance error.

Q-learning, DQN, actor-critic, DDPG, TD3, PPO, SAC and A3C: the update rules, losses, and a full A3C implementation, with what each method fixed.

Build an accessible, animated category accordion with native HTML5 details/summary, CSS transitions, and no JavaScript library.

The state-space model, priors, and Gibbs sampling steps behind CausalImpact, plus how to turn posterior samples into a causal effect estimate.

The Gamma distribution's PDF, its recursive and special-case identities, and how Erlang, Chi-squared, Exponential, Weibull and Poisson derive from it.

Split client state and server state cleanly with Jotai and TanStack Query, and drop Redux Toolkit's boilerplate.

Integrate TanStack Router, TanStack Query, and a Shadcn sidebar into an Astro app with a co-located routing structure.

Generate a sitemap.xml from your TanStack Start route tree at build time and wire up privacy-friendly analytics.