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  • Hong Kong / United Kingdom

Achievements

Achievement: Pull Shark

Achievements

Achievement: Pull Shark

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jackyyangjq/README.md
Jiaqi (Jacky) Yang, Dual PhD Candidate, The Hong Kong Polytechnic University and University of Surrey

Website  ·  Academic CV  ·  Industry CV  ·  LinkedIn  ·  Email
English · 简体中文

I study how digital technology and public policy change tourism and hospitality markets, using causal inference, time-series models and large language models as measurement tools for text. I am on the 2026–27 job market for academic, research, data science and quantitative roles.

  • Best Paper Awards at IATE 2026 and CHME 2026
  • Papers in revision at Annals of Tourism Research and the Journal of Travel Research
  • Open code for the methods I use, each checked on data where the answer is known

Research methods in code

Event study on a simulated staggered rollout: three estimators against the true effect

applied-stats-econometrics-toolkit
Statistics and econometrics I use in research, each checked on simulated data: staggered DiD, quantile regression with fixed effects, VAR, bounded-outcome models, change points.

 Agreement of LLM labels with a repeat run, a second model and cheaper baselines

llm-text-measurement
LLM labelling of 998 hotel reviews, validated six ways: 94.6% agreement with the guests' own liked/disliked split, alpha 0.93 against a second model, no false labels on controls.

 US inflation over the next 12 months: realised values against random-forest and AR forecasts

ml-inflation-forecasting
Machine-learning forecasts of US inflation from 121 FRED-MD series, replicating Medeiros et al. (2021). Tree models cut forecast error by 15-20% against an AR benchmark in 2001-2015, but not since 2020.

Tools and apps

Project What it is
filings-qa-agent Question answering over SEC filings with a checkable source for every sentence, a tool-using research agent, and a 50-question retrieval evaluation (keyword search 95% correct).
finfluencer-digest Daily digest of stock calls: Gemini watches 16 YouTube finance channels and X accounts, extracts each call and sums up the consensus. Multi-model fallback, scheduled runs, source-checked news.
catfolio fork Portfolio dashboard fork with broker sync and a tracker that scores stock calls against later prices. Four pull requests upstream.
Calorie tracker · live Offline web app that recognises food from photos with a vision model and calibrates calorie estimates against real weight data. 20 versions in seven weeks.

How I work with AI

Claude Code is my main tool for research and software. The method in outline is on my website, How I work with AI, and the templates are in ai-research-workflow.

Topic In short
Vibe coding I write the spec and the checks, an AI agent writes the code, and I test each step before anything goes public.
A paper with AI One working paper taken from question to journal-ready files with AI at every stage; the design and the claims stay mine.
Effort levels Low effort while working out what to do, high effort when checking the result.
Project management A coordinating session, task cards, one task board and a fresh reviewer for every result.
Quiet errors Six mistakes in AI-assisted work that gave no error message, and the checks that now catch them.

Open source

  • ClaudeCodeUsage (VS Code extension, TypeScript): #115 cached the dashboard date-label formatter (fixes #99), merged September 2026.
  • catfolio (FastAPI portfolio dashboard, Python): #4 HK ticker padding and HKD exchange rates, #5 dead links, #6 broker account sync, #7 call-tracker workspace; opened September 2026.

Where visitors to my website come from

World map of visits to my website, updated hourly
Counted by the site's own cookie-free counter; updated hourly. Cities, sources and daily visits

Popular repositories Loading

  1. ml-inflation-forecasting ml-inflation-forecasting Public

    Forecasting US CPI inflation with machine learning on FRED-MD: a Python replication and extension of Medeiros et al. (2021), with Diebold-Mariano tests and SHAP explanations

    Python 1 1

  2. caltrk caltrk Public

    Single-file offline-first calorie tracker with AI food recognition, arithmetic cross-checks on model output, and weekly calibration against real weight data

    JavaScript

  3. ClaudeCodeUsage ClaudeCodeUsage Public

    Forked from ClaudeCodeUsage/ClaudeCodeUsage

    A VSCode extension that monitors Claude Code usage and costs directly in your status bar.

    TypeScript

  4. jackyyangjq jackyyangjq Public

    Profile README

  5. finfluencer-digest finfluencer-digest Public

    Daily digest of finance YouTubers and X accounts: Gemini watches the videos, extracts structured stock calls, aggregates consensus, and emails you

    Python

  6. catfolio catfolio Public

    Forked from irrwood/catfolio

    Catfolio is a self-hosted portfolio dashboard and quantitative research workspace for investors who want a private command center for holdings, returns, risk, strategy experiments, and AI-assisted …

    Python