Alex Lei Email & Phone Number

Lead the Microsoft Ads Relevance Measurement teamTransition from managed to crowd and finally LLM (GPT) labeling for Ads quality metrics.

- Worked on Ads Relevance through experimentation with novel features and models.- Worked on Demand Quality area including offline infrastructure (data generation and deployment. Monitoring etc.), and modeling on various Ads policy areas (Malicious/Spam Ads. Bad Download, Third party tech support etc.)

- Developed a big data dashboard platform to monitor and visualize KPIs for Microsoft Ads Marketplace. It serves hundreds of internal analysts, scientists, and executives with fast, interactive slice-and-dice on near real time metrics.- Developed Microsoft Ads A/B Test authoring platform, enables data scientists to self-serve the creation of A/B tests at scale, and start seeing results in hours.- Designed and developed a statistical-based validation service for Ads releases including A/B Test, model, and binary deployments. It received thousands of validation requests daily. Gated live site incidents on weekly basis.

- Working on audio system for AutoOEM products- Integrated Bluetooth subsystem to various platforms using different Bluetooth stacks- Worked on several Bluetooth protocols (HCI, SDP, L2CAP, RFCOMM, OBEX, AVDTP, AVCTP) and profiles (Hands-free, Headset, SPP, PBAP, A2DP, AVRCP v1.3, MAP , SyncML)- Assisted Bluetooth certification and interoperability (IOP) testing; troubleshot test failures with Frontline Bluetooth sniffer and hcidump logs from BlueZ- Involved in other system-level developments such as audio (ALSA and PulseAudio in Linux), power management and sensor service (in Android)

Department Of Electrical Engineering And Computer Science

- Designed statistical approach for optimizing protein structure motifs - Utilized graph model (Markov Random Field) in combination with machine learning algorithms (Support Vector Machine)- Implemented searching algorithm for distantly-related proteins based on protein structure profiles

Engineering Administration

- Created and updated Academic Requirements Tracking System (ARTS) degree audit forms based on curricular changes

East Asian Library

- Maintain online databases for Council on East Asian Libraries (CEAL) and Chinese American Libraries Association (CALA), which contain data from over 55 universities aroundthe world, using ASP and MS Access

- Programmed Linux-based applications for the upcoming automotive GPS navigation products (nuvi) - Fixed bugs and errors in various places in the application; Re-implemented several pages for feature and performance improvements

- Developed Python program to discover novel small RNA genes and their target sites in E. coli