Haifeng Gong

Haifeng GONG

Research Scientist at Meta, working on Threads Social Media AI — tech lead on retrieval and early stage ranking. Previously Software Engineer at Google (2011–2025), building image agents for Display Ads and machine-learned spelling for Search.

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Expertise

AI Agents & Application LLM

  • Image agent orchestration: multimodal workflows for image ad creation; RAG and embedding for output quality
  • Mixed agent swarm: tooling, time/budget management, deadlock prevention, workspace isolation, red-team and critique
  • Agent in ranking funnel: retrieval, list ranking, content/user understanding, agent teacher for distillation

AI for Recommender Systems

  • Social media ranking: retrieval, early stage ranking, user interaction sequence modeling, generative recommender
  • Display ads ranking: CTR/eCPM/CVR prediction and selection; ads format design with computer vision
  • Search engine ranking: ML based keywords and query understanding

Work Experience

Research Scientist, Meta CA, USA · Oct 2025 – now
Software Engineer, Google CA, USA · Oct 2011 – Oct 2025
Postdoctoral Scholar, GRASP Laboratory, University of Pennsylvania 2009 – 2011
Postdoctoral Scholar, Department of Statistics, UCLA 2007 – 2009
Team Leader, Lotus Hill Institute 2006 – 2007

Education

Professional Activity

Reviewer for IEEE T-CSVT, IEEE T-IP, IEEE T-PAMI, ICCV, Journal of Electronic Imaging, Journal of Field Robotics, Machine Vision and Applications, Pattern Recognition, Pattern Recognition Letters, and the National Natural Science Foundation of China.

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