Yi Cheng Email & Phone Number

United States

San Francisco Bay Area

Software engineer working on open source software Ray (http://tinyurl.com/ye25xzrv) and LLM perf for Anyscale. Focus on Ray's reliability and scalability. A major Ray committer since 2021.Major contribution:- Speed up model loading by 10x. Loading LLama-2-70B within 30s from S3 to GPU.- Scale Ray cluster to more than 4k nodes from 200. Reduce network usage.

Redwood City, California

Software Engineer working database engine, including storage, computation

Menlo Park

Rewarded with top ratings(RE) twice. Worked at Ads team, contributed to Inventory Estimation and Realtime Processing Infra.- Help the team launch the next generation inventory estimation engine.- Save the offline pipeline for Inventory Estimation by 9k CPU days per day.- Reduce the memory footprint by 50% and latency by 30% for Inventory Estimation; Reduce.

Menlo Park, California

Database team. I was working on DocStore project in the MySQL team. This project introduced a new type called document to MySQL, which supports storing JSON in MySQL. Implemented partial updating and re-architecture the code of the project.

Beijing

Work on Web Data team. Focusing on ML and graph database.Build the models for different purposes: - Identify empty web pages. Improve the recall rate by 150% while keep the precision the same. - Identify the video cheating web pages with more than 95% recall and precision. - Identify the search result web pages.Design and implement a distributed knowledge.

Guangzhou, Guangdong, China

Master Of Computational Data Science

Bachelor'S Degree