Writing
All Articles
Architectural notes on agent orchestration, data engineering, control boundaries, and system evolution.
Branch Governance with Cherry-Pick in Multi-Factory Deployments
Managing multi-site code deployments: using single-path cherry-pick workflows to distill features into atomic trunk commits before promoting to factory deployment branches.
Enterprise AI Cockpit: RAG, Vector Search, and Real-Time Streaming
Engineering an enterprise AI cockpit featuring decoupled persistent storage, pgvector retrieval with lexical fallbacks, true end-to-end SSE streaming, and strict resource isolation.
Walk-Forward Validation and Out-of-Sample Testing for LLM Sentiment Factors
Practical feature engineering with LLMs in quantitative trading: structured event extraction, temporal alignment, exponential decay, and Walk-forward out-of-sample incremental testing.
Traceable Data Architecture for Cross-Border Trend Intelligence
Integrating multi-source data ingestion, deterministic category normalization, and a profit waterfall model to deliver an auditable daily decision-support system.
Rigorous Audit Rules for Quantitative Backtesting
A systematic guide to backtesting integrity: causality enforcement (shift(1)), point-in-time financial data, cost sensitivity stress testing, Walk-forward isolation, and sample-level look-ahead prevention.
Engineering a Trustworthy AI Quantitative Research System
Building a robust quantitative research platform with state machine persistence, data versioning, and auditable execution across collection, factor mining, backtesting, and learning.