Skip to content
View angelazu-builder's full-sized avatar

Highlights

  • Pro

Block or report angelazu-builder

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Content in all repositories owned by your account will be closed.
Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
angelazu-builder/README.md

Hi there, I'm Angela Zu! πŸ‘‹

University of Oxford N1 AI Scholar Focus Python Trading & Markets

πŸ› οΈ AI Systems Builder & Quantitative Researcher Β· University of Oxford (Laidlaw Scholar) Β· N1 AI Scholar
πŸ”¬ Core Focus: AI Agents & Execution Environments Β· Quantitative Trading & Event Engines Β· LLM Training Dynamics Β· Econometric Data Pipelines


🌟 Flagship Systems & Empirical Research

Python Β· PyTorch (Apple Silicon / MPS) Β· Transformer Mechanics Β· Controlled Empirical Study Β· Preregistered Recovery

  • Research Problem: Does the temporal order of context lengths presented during training leave a persistent path-dependent deficit on an LLM's final capability, or is the apparent difference an artifact of recency bias and confounded evaluation?
  • What I Built & Key Findings:
    • Engineered an inspectable 4.8M-parameter character-level Transformer optimized for Apple Silicon (MPS backend) with modular data pipelines, diagnostic probes, and evaluation harnesses.
    • Executed a three-iteration controlled empirical study: evolved from an initial single-seed pilot to a 5-paired-seed design, culminating in a formal preregistered recovery study holding token budgets (4,096 tokens/step), paired seed initializations, data manifests, and AdamW optimizer trajectories invariant.
    • Uncovered that an initial severe descending deficit ($+0.7570$ BPC gap at $T=256$) completely reversed to $-0.0485$ BPC after a common $T=256$ recovery phaseβ€”ruling out strong persistent path dependence and demonstrating that final performance is dominated by recent context exposure.
  • πŸ”— Repository | πŸ“„ Concise Technical Report (PDF) | πŸ“‹ Frozen Preregistration

Python Β· OpenAI Responses API Β· Missing Data Econometrics Β· Multi-API Data Pipeline Β· Folium / Leaflet

  • Research Problem: Regulatory invisibility and missing data across micro-enterprises make evaluating social economy density and policy shocks challenging.
  • What I Built:
    • Standardized 3,096 master entities across 7 REST/Bulk APIs (Companies House, Charity Commission, FCA, 360Giving, Contracts Finder, IMD) using postcode-blocked Jaccard n-gram matching ($\ge 85%$).
    • Evaluated OpenAI Responses API (web_search tool) vs Chat Completions (gpt-4o-mini), demonstrating a 96% vs 32% accuracy jump and zero-hallucination web extraction.
    • Modeled the 2013 CIO Policy Shock (+15,600% surge in CIOs, 61% drop in CLGs) and missing data theory (MCAR vs MAR/MNAR).
  • πŸ”— Repository | 🌐 Live Interactive Maps | πŸ“„ Empirical Paper

Python Β· Interactive Brokers (IBKR) Β· SEC EDGAR API Β· Streamlit Β· Probabilistic Valuation Β· Ongoing / WIP

  • Research Problem: Corporate events (earnings releases, guidance updates, Investor Days) shift fundamental cash flows faster than equity markets price them, but naive sentiment approaches suffer from severe look-ahead bias and ungrounded hallucinations.
  • What I Built & Key Edge:
    • Implemented an end-to-end quantitative trading engine calculating the Fundamental Revision ($FR$) vs Price Reaction ($PR$) Gap to capture structural underreactions across 10-minute to multi-day horizons.
    • Zero Look-Ahead Bias Ingestion: Pre-event snapshot validation strictly locking consensus expectations prior to event execution; live SEC EDGAR REST API reader with sha256 content hashing and primary citation tracking.
    • Quantified Probabilistic Valuation: Structured thesis engine computing probabilistic Bull/Base/Bear scenarios, Expected Value ($EV$), return spreads, and explicit thesis break conditions.
    • Automated Execution & Risk Limits: Interactive Brokers (IBKR) paper order routing protected by strict portfolio guardrails (12.5% single-stock cap, 50% portfolio cap, spread <1.5%) and human-in-the-loop Streamlit UI.
  • πŸ”— Repository | πŸ“„ Architecture Specification

Python Β· AST Import Parsers Β· Invariant Baselines Β· Agentic Tool Execution Β· Safe Migration Pipeline

  • Engineering Problem: AI coding agents frequently propose hallucinated structural changes, break module imports, and generate unsubstantiated novelty claims without verifiable environment feedback.
  • What I Built:
    • Developed an enterprise-grade AI Agent Skill and deterministic verification environment for autonomous repository audits and high-conversion landing page restructuring.
    • 6-Domain Invariant Verification Baseline (scripts/invariant_checker.py): Programmatically captures and validates AST module imports, relative Markdown links, package entry points, and CI workflows.
    • AST Safe Migration Pipeline (scripts/safe_migrate.py): Performs dry-run simulations, atomic git mv operations, and instant automated git reset rollback on test or invariant failure.
    • 3-Layer External Novelty Audit: Orchestrates GitHub Search API, OpenAlex/arXiv API, and web search to output deterministic 6-part proof tuples (Claim -> Comparable -> Similarity -> Difference -> Evidence -> Confidence).
  • πŸ”— Repository | πŸ“¦ Skill Specification

πŸ› οΈ Other Projects & Tools

  • ⚑ gemini-live-multimodal-tutor: Real-time multimodal conversational tutor built with the Gemini Live API for voice/visual problem solving (Google Cloud Hackathon 2026).
  • πŸ—ΊοΈ oxfordshire-population-map: Interactive geospatial portal mapping census demographic distributions and social enterprise density across UK postcodes (OX1–OX49) (Live Map).
  • πŸ“ CrystalNotes: AI transcript intelligence pipeline transforming unstructured audio into deeply hierarchical, structured study notes.
  • πŸš€ tech-launch-promoter-skill: AI Agent Skill for generating developer launch threads, Show HN submissions, and 15-second screen demo scripts.
  • 🌌 Datawhale_AI4S: Numba JIT-accelerated Kesten stochastic dynamics simulator & active learning candidate phase transition scanner.

βš™οΈ Technical Capabilities & Stack

  • AI Agents & Verification Environments: Deterministic agent execution harnesses, AST-based import/dependency validation, 6-domain invariant checking, tool call schema verification, atomic migration pipelines.
  • Quantitative Trading & Financial Engineering: Event-driven mispricing signals ($FR - PR$), SEC EDGAR live ingestion, abnormal return modeling, probabilistic scenario valuation ($EV$), Interactive Brokers (IBKR) API integration, risk management guardrails.
  • LLM Training Dynamics & Mechanics: Context-length curricula, paired-seed experimental controls, preregistration protocols, BPC validation surfaces, Apple Silicon MPS profiling.
  • Quantitative Econometrics & Data Pipelines: Multi-source REST/Bulk ETL pipelines, missing data theory (MCAR/MAR/MNAR), entity resolution (postcode-blocked Jaccard n-gram matching).
  • Languages & Frameworks: Python (PyTorch, Numba, NumPy, SciPy, Pandas, Streamlit), JavaScript / TypeScript, HTML/CSS, SQL.

πŸ“« Connect & Portfolios

Popular repositories Loading

  1. osep-quant-ai-social-impact osep-quant-ai-social-impact Public

    Quantitative Research, Multi-API Data Engineering, Missing Data Econometrics & OpenAI LLM Evaluation

    HTML 1

  2. CrystalNotes CrystalNotes Public

    AI Transcript Intelligence β€” Transforms length transcripts into deeply-layered structured notes

    TypeScript

  3. gemini-live-multimodal-tutor gemini-live-multimodal-tutor Public

    Real-Time Multimodal AI Tutor built with Gemini Live API for Conversational Learning (Google Cloud Hackathon 2026)

    JavaScript

  4. oxfordshire-population-map oxfordshire-population-map Public

    Geospatial Demographic & Social Enterprise Interactive Maps (Leaflet.js & Folium)

    HTML

  5. angelazu-builder angelazu-builder Public

    ✨ GitHub Profile README

  6. Datawhale_AI4S Datawhale_AI4S Public

    Python