William Tsai

software engineer | chip designer

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  • taipei, taiwan
  • seattle, wa
  • weilun.tsai0116@gmail.com
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    Linked projects only

    >> Stealth Mode <<

    In-progress (2025)

    cool stuff coming soon :)

    Agentic AI Platform for Stock Market Intelligence

    2025

    A platform that leverages specialized AI agents to deliver real-time market analysis, track financial trends, and provide natural language-based portfolio insights and alerts, enabling traders to interact with market data and take action using natural language.

    Artificial IntelligenceMulti-Agent SystemsNext.jsPythonFastAPI

    RAG-Based AI Portfolio Assistant

    2024

    A custom AI assistant leveraging Retrieval-Augmented Generation (RAG) and LLMs to deliver a real-time, interactive portfolio experience integrated into a portfolio site. Features include real-time chat, knowledge/document embedding, rate limiting, session management, error handling, and more.

    Artificial IntelligenceNext.jsTypeScriptRedisSupabaseLangChainDocker

    Thumbnail Recommender for YouTube Videos

    2021

    A BERT-based multi-label classification model to recommend optimal thumbnail content by analyzing textual metadata to maximize video virality, achieving 90.29% accuracy in multi-label classification.

    Applied Machine LearningPythonBERT

    Data Augmentation for Image Classification using NeRF View-Synthesis

    2021

    A novel data augmentation pipeline utilizing Neural Radiance Fields (NeRF), improving classification accuracy from 86% (balanced) and 50% (imbalanced) to 91% through synthetic view generation.

    Computer VisionPyTorchPython

    Startup and VC Assessment and Matching Platform

    2021 Columbia Build Lab

    A platform connecting startups and VCs through streamlined assessments and an intelligent matching system, enabling fast strategic alignment, fostering collaborations and investment opportunities.

    Web ApplicationReactPythonPostgre

    Product Review Generator and Sentiment Classifier

    2021

    A system designed to generate realistic product reviews using NLP techniques and analyze sentiment accurately through ensemble classification, enabling businesses to simulate customer feedback and gauge customer sentiment effectively.

    Natural language processingPython

    Investment Management and Strategy Planning System

    2020

    A web application designed for investment professionals to manage and monitor their investment targets, including setting price alerts, planning trading strategies, sharing trading ideas, and more.

    Web ApplicationReactAWSMySQL

    Reconfigurable Radix-2^k×3 Feedforward FFT Architectures

    2019 IEEE ISCAS

    A highly parallel, low-complexity, power-efficient, and reconfigurable feedforward FFT architectures for mixed-radix lengths, ideal for high-throughput mobile applications. A 4G LTE implementation demonstrates up to 33× higher throughput, 7.16× better area efficiency, and 4× lower power compared to previous designs.

    Computer ArchitectureVerilogC/C++

    A Low-Complexity Mixed-Radix FFT Rotator Architecture

    2018 IEEE APCCAS

    An ultra-low-cost, power-efficient FFT rotator design (a ROM-less and multiplierless architecture). A 128–2048/1536-point implemetation shows 16.75% area reduction and 62.94% power savings with no performance degradation.

    Computer ArchitectureVerilogC/C++