Toshikazu Nakamura

Software Engineer @Google

I\'ve been working in webspam team (part of Search Quality - ranking algorithms) to make web search clean and safe. I am mainly working on the following three projects in the team- I\'ve been leading a project that tackles scams on search results. I design and implement query classifiers, result filtering algorithms, and scam site classifiers to make the web search more secure and trusted- I\'ve been also working on the Google\'s main spam detection ML infrastructure, called SpamBrain. I design and implement the very large scale production inference pipeline and powerful tools for model developments- I\'ve been maintaining and improving the main component for spam prevention running in the search stacks. I\'ve made some big optimizations that saved a lot of CPU usage and improved search latency. Related post: https://developers.google.com/search/blog/2023/04/webspam-report-2022 (SpamBrain and scam prevention)