01

Public knowledge

Notes without private leakage.

Every item here passed a build-time visibility filter. Original Q&A and protected records remain in the private repository.

12 public records

decision

Separate Product Evidence from Agent Capability

PAT improves reusable Agent capability; Quant product lines earn evidence through separate data, research, portfolio, risk, and execution gates.

principle

Balance Sheet, Liquidity, Survival

Cash flow, liquidity, duration, financing cost, and survival constraints precede leverage or return targets.

principle

Evidence States Must Not Be Conflated

Plans, backtests, paper runs, shadow runs, and live evidence are separate states with separate claims and promotion gates.

principle

Measure, Benchmark, Human Review

Every important capability needs a baseline, falsifiable measure, versioned result, trade-off, and Human Review boundary.

principle

Private by Default

Original notes remain private unless a Human-approved export explicitly marks content public.

principle

Public Builds Contain Public Abstractions Only

Privacy is enforced by excluding private records from generated artifacts, not by hiding them in the browser.

project

PENGYI-01

The primary A500 multi-factor index-enhancement research line, progressing through evidence gates rather than return claims.

system

PAAT Alpha Research

The governed Alpha research layer that converts point-in-time data and factor hypotheses into evaluated artifacts.

system

PAT Agent Foundation

A reusable Agent Foundation for knowledge, memory, tools, planning, and evaluation across every domain team.

system

PCPT

Constrained portfolio construction from validated Alpha artifacts.

system

PDAT

Governed data acquisition, quality, lineage, storage, and query boundary.

system

Pengyi OS

The private Source of Truth that turns original thinking into governed decisions, actions, and reusable evidence.