Charles Tianyang Xu

About Me

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

M.S. Computer Science

Columbia · 2026AgentsDistributed SystemsEval

An IBM-mentored study of bottlenecks in industrial agent systems and adaptive reasoning control.

Columbia · 2025AgentsNLPCVHCI

Real-time ASL video-to-text translation with sentiment-aware outputs.

Berkeley FHL Vive Center · 2024AgentsNLPDatabasesRAG

An agentic RAG system grounded in Berkeley CS course materials. Try at tai.berkeley.edu.

Columbia Software Systems Lab · 2026MLDatabasesNetworking

Caching for object-store-backed vector databases under heavy retrieval workloads.

Berkeley NetSys Lab · 2024AINLPDatabases

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

Columbia · 2025MLImitation LearningRoboticsCV

LLM-driven synthetic robot demonstrations for imitation learning in simulation.

Images of the Russian Empire CVLearning NotesColorizing the Prokudin-Gorskii photo collection.
Fun with Filters and Frequencies CVLearning NotesEdges, sharpening, hybrid images, and multiresolution blending.
Fun with Diffusion Models CVGenerative AILearning NotesSampling, denoising, guidance, and image-to-image generation.
Gradient Domain Fusion and Light Fields CVLearning NotesPoisson blending, mixed blending, and light field refocusing.