Happy Choi

CHOI, Long Ho Happy

lhchoiac@connect.ust.hk · LinkedIn · GitHub · lhchoihappy.github.io

Last updated October 2026

Education

Sept 2023 – Present

The Hong Kong University of Science and Technology (HKUST)

Bachelor’s Degree in Engineering, major in Computer Science, with an Extended Major in Artificial Intelligence.

  • GPA: 3.112 / 4.3
  • Minor in Mathematics
  • Minor in Big Data Technology
Sept 2017 – June 2023

Tin Ka Ping Secondary School (TKPSS)

2023 HKDSE

  • 5* in Mathematics (Compulsory Part)
  • 5* in Mathematics (Extended Part Module 2)
  • 5 in Physics, 5 in Chemistry, 5 in Liberal Studies

Projects & competitions

Jul 2026 – Present

TrustShop: Agent-Orchestrated Online Shopping Assistant

Final Year Project · supervised by Prof. Nevin Lianwen ZHANG

  • Designed and implemented a trust-weighted review summarisation module using aspect clustering, pros/cons extraction, and self-critique verification with LLMs.
  • Built a deterministic data acquisition pipeline with schema validation and commercial API fallback, collecting and processing product and review data across platforms.
  • Developed tool schemas and contributed to the agent orchestration layer for open-ended query decomposition and trust-aware routing.
Sept 2025 – Oct 2025

Cathay Hackathon 2025 — Participant

  • Proposed a RAG-based AI chatbot for airline transit information, converting UX challenges into technical proposals under time constraints.
  • Applied design thinking and collaborative brainstorming to improve passenger services.

Internship experience

July 2026 – Aug 2026

Summer AI Intern

ESD Services Limited (ESDlife) · Hong Kong, China

  • Performed UAT testing.
  • Implemented two social media web scrapers (Facebook and Instagram).
  • Analysed social media trend topics using various NLP, LLM and ML methods.
June 2025 – Aug 2025

AI Programmer

Centre for Intelligent Multidimensional Data Analytics Limited · Hong Kong, China

  • Collaborated with senior engineers on new web development projects, including a CV system for engineers.
  • Worked on backend development using PostgreSQL and wrote several APIs for the React Native frontend using JavaScript and Node.js.

Awards & recognitions

Nov 2023

Dean of Engineering Scholarship (HKUST)

In recognition of excellent academic achievement in HKDSE.

Oct 2023

Outstanding TKPSS Graduate Award (Tin Ka Ping Foundation)

In recognition of remarkable academic achievement in HKDSE.

Undergraduate research project experience

Jun 2025 – Present

Heat Index Estimation — UROP, HKUST

Supervised by Prof. FUNG, Jimmy Chi Hung; co-supervised by Dr. CHAN, Jimmy Wai Man, and Dr. Tilman Leo Hohenberger (from 2026 Summer).

2026 Fall

Sep 2026 – Present
  • Estimate spatial temperature across the whole Hong Kong region.
  • Use various neural network models for land cover classification.
  • Plan and operate drones to capture DJI thermal JPG images in specified regions.

2026 Summer

Jun 2026 – Aug 2026
  • Developed a Python script for automatic geo-referencing of thermal images (DJI thermal JPG to geo-coded raster).
  • Operated drones to capture DJI thermal JPG images.

2026 Spring

Jan 2026 – May 2026
  • Developed a 24-hour building shadow system across the HKUST campus and expanded the domain to the whole Hong Kong region.
  • Optimized building shadow computation using multi-threading and multi-processing techniques.

2025 Fall

Sep 2025 – Dec 2025
  • Developed an urban building shadow analysis framework with seamless map merging for dense urban environments.
  • Investigated sunlight pattern determination and visualization at minute-level intervals with high temporal resolution.
  • Investigated map merging strategies without boundary artifacts.
  • Performed GIS work on building shadows of different morphologies, solar irradiance, and Hong Kong map extraction.

2025 Summer

Jun 2025 – Aug 2025
  • Predicted localized temperature exposure across different times and locations using a Sky-View Factor approach.
  • Performed GIS work on multi-source geospatial data (3D building morphology, building shadows) and microclimate parameters (solar radiation, temperature) using QGIS, CSDI portal, Open3Dhk, and Overpass Turbo.

Course highlights

AI & data
Artificial Intelligence (Python), Large Language Model, AI Agents, Image Processing, Machine Learning, NLP, Data Mining, Reinforcement Learning
Programming & systems
Object-Oriented Programming (C++), Software Engineering (Java), Operating Systems (Linux), Data Structure, Design and Analysis of Algorithms, Computer Organizations
Math & statistics
Statistical Computing (R), Nonparametric Statistics, Probability, Honor Discrete Mathematics
Web & others
Web Development (PostgreSQL, JavaScript, Node.js, React Native), GIS (ArcGIS, QGIS), Vibe Coding, Design Thinking

Soft skills

Enrichment activities and leadership roles

Feb 2025 – May 2025

Tin Ka Ping Secondary School F.5 Mathematics (Extended Part Module 2) Enhancement Class Tutor

  • Prepared course outlines and handouts, and reviewed and provided feedback on coursework for 23 participating students taking M2 as an elective subject in HKDSE.
  • Delivered a total of 7 tutorials based on the course materials prepared.
Apr 2024 – May 2024

Tutor of the Revision Class for Special Education Needs (SEN) students

  • Gave academic support and guidance to the SEN students.
Oct 2023 – Feb 2024

Tin Ka Ping Secondary School F.6 Chemistry Enhancement Class Tutor

  • Prepared course outlines and handouts, and reviewed and provided feedback on coursework for 1–2 participating students taking Chemistry as an elective subject in HKDSE.
  • Delivered a total of 10 tutorials based on the course materials prepared.