Charles Xu

Charles Xu Charles Xu's dog

It's worth clicking the photo

charlesxuty3 [at] berkeley [dot] edu

About Me

Hey, I'm Charles

On weekdays, I study ML & Systems at Columbia.

On weekends, I play tennis, read, wander in nature, and pet dogs on the street of New York. 🗽

Education

University of California, Berkeley

B.A. Computer Science B.A. Applied Mathematics

Columbia University

M.S. Computer Science

Builds

A selected set of things I have built recently. 💻

ML Systems

Quake Cache | Columbia Software Systems Lab · 2026

A dynamic caching layer for object-store-backed vector databases, improving retrieval latency under heavy query workloads.

Libem | Berkeley NetSys Lab · 2024

A compound AI system for entity matching, featured at Databricks Data + AI Summit 2024.

AI Agents

Industrial Agent Interoperability via MCP | Columbia · 2026

An IBM-mentored study of bottlenecks in industrial agent systems, designing a reasoning router with learned strategy for adaptive reasoning control.

ASL Agent | Columbia · 2025

A real-time American Sign Language (ASL) video-to-text translation agent that improves accessibility through sentiment-aware outputs.

TAI | Berkeley FHL Vive Center · 2024

An agentic RAG system grounded in Berkeley CS course materials, built to provide context-aware support for real-world learning. Try at tai.berkeley.edu.

Embodied AI

SimPoser | Columbia · 2025

An LLM-driven imitation learning system that generates synthetic robotic demonstrations in simulation, eliminating manual data collection for real-world policy training.

Writings

Sometimes, I write. 🖋️

Generating the next chapter