Xiaoyu (Simon) Song

Hi, welcome to my website! I am a Software Engineer at Huawei Technologies, where I work on distributed memory systems and KV cache infrastructure for large language model inference. Previously, I was a Research Intern in the Safe AI Lab at Carnegie Mellon University, instructed by William Han.

I received my Master of Information Systems Management from Carnegie Mellon University in 2025 and my B.E. in Data Science from Shanghai University in 2024.

My research and engineering interests lie at the intersection of AI systems and multimodal AI applications, with a current emphasis on:

  • Distributed memory management and KV cache infrastructure for LLM inference
  • Multimodal AI applications, including agents, reasoning, and healthcare

Updates

Selected Publications / Preprints

(* indicates equal contribution)

Retrieval-Augmented Generation for Electrocardiogram-Language Models

Xiaoyu Song*, William Han*, Tony Chen, Chaojing Duan, Michael Rosenberg, Emerson Liu, Ding Zhao

arXiv, 2025

TL;DR: We integrate statistical and pathological feature retrieval into ECG-language modeling, substantially improving clinical report generation and diagnostic accuracy.

Signal, Image, or Symbolic: Exploring the Best Input Representation for Electrocardiogram-Language Models Through a Unified Framework

William Han, Chaojing Duan, Zhepeng Cen, Yihang Yao, Xiaoyu Song, Atharva Mhaskar, Dylan Leong, Michael Rosenberg, Emerson Liu, Ding Zhao

arXiv, 2025

TL;DR: A unified study of signal, image, and symbolic representations for electrocardiogram-language models.

An Integrated Instant NeRF and Simulation Based 3D Reconstruction for Immersive City Twin

Xiaoyu Song, Hansong Xu, Xing Liu, Fan Liang

Springer CUTECSA, 2024

TL;DR: We combine Instant-NGP NeRF with simulated city maps to create an interactive and immersive urban digital twin.

Prediction of People’s Abnormal Behaviors Based on Machine Learning Algorithms

Xiaoyu Song

IEEE MLISE, 2022

TL;DR: An applied machine learning pipeline for recognizing and predicting abnormal human behavior patterns.

Experience

Mar. 2026 — Present

Software Engineer

Huawei Technologies

Distributed memory management and high-performance KV cache storage and transfer for LLM inference; contributor to Ascend MemCache and MemFabric Hybrid.

2025 — 2026

Research Intern

Carnegie Mellon University · Safe AI Lab

Multimodal AI research on retrieval and reasoning for ECG-language models, instructed by William Han.

May 2025 — Aug. 2025

Algorithm Engineer Intern

Anker Innovations

Real-time heart-rate estimation from multimodal PPG + IMU signals, with model pruning and quantization for efficient inference.

Dec. 2023 — Apr. 2024

Algorithm Engineer Intern

Shanghai Intelligent and Connected Vehicle R&D Center

Real-time vehicle tracking and trajectory analysis across camera networks using DeepStream and YOLOv5.

Jun. 2023 — Aug. 2023

Intelligence Analyst Intern

Meituan & Dianping

Applied XGBoost, unsupervised clustering, and funnel analysis for user segmentation and fraud detection; automated large-scale data preprocessing and anomaly visualization workflows.

Nov. 2022 — Sep. 2023

Research Intern

Shanghai Jiao Tong University

Applied Instant-NGP NeRF and simulation to build interactive digital twins; combined YOLO and Segment Anything for object detection and segmentation in robotic manipulation.

Jul. 2022 — Aug. 2022

Asset Management Analyst Intern

Industrial Securities Futures

Built Python- and Excel-based portfolio risk analysis tools and automated document parsing and database ingestion, reducing manual processing time by 90%.

Education