Joel Pfeiffer Email and Phone Number
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As a Machine Learning Scientist at Microsoft, I work to improve Microsoft Advertising in a variety of ways, from utilizing Generative AI for user personalization, to protecting user privacy through the initial development of the Private Ads Selection API. I have held other roles within the company, from migrating our team to modern pipeline infrastructure, to releasing improved ctr models for our syndication partners.
Microsoft
View- Website:
- microsoft.com
- Employees:
- 10
- Company phone:
- 0124 415 8000
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Principal Machine Learning ScientistMicrosoft Mar 2022 - PresentRedmond, Washington, UsAs a principal ML scientist, work on a variety of projects to improve our Ads experience, including:•Developed Generative AI algorithms for Large Scale User Personalization, with tailored ad selection to user interests. Achieved significant improvements in a variety of online metrics.• Designed user privacy preserving representations PARAKEET V2 and MaskedLark, which are designed for user selection and model training with differential privacy constraints. Whiteboarded the Private Ad Selection API, including getting SLT signoff, which is becoming a major industry standard for personalized user advertising experiences without compromising user privacy.* Additional adhoc duties as needed: flight/livesite analysis, built an offline experimentation platform, migrated the team to new offline modeling frameworks, and having other leadership, mentoring and coaching roles.
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Senior Machine Learning ScientistMicrosoft Sep 2017 - Mar 2022Redmond, Washington, Us* Lead the "Signals" modeling for syndication partners, working to improve our core ranking signals (such as CTR)* Significantly simplified the representations of many syndication traffic groups into a single, unified model. This resulted in high accuracy improvements for some partners (+10% AUC), significant offline cost reduction and online serving costs.
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Applied ResearcherMicrosoft Jun 2015 - Aug 2017Redmond, Washington, UsVariety of responsibilities for click prediction, ranging from DNNs and model compression to personalization, bandits, etc.
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Research AssistantPurdue University Aug 2009 - May 2015West Lafayette, In, UsI am a research assistant in Computer Science, working with Jennifer Neville on relational learning theory and probabilistic graph metrics.* Developed novel probabilistic graph representations and models, such as Attributed Graph Models, that accurately characterized the distribution of graph representations.* Worked on Relational Machine Learning, a subfield of Machine Learning focused on predicting attributes of graphs, improving on the SOTA at the time. -
Research InternMicrosoft May 2013 - Aug 2013Redmond, Washington, UsIntern at Microsoft Research Redmond. Worked on active learning when the class label distribution is skewed.
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Graduate Student InternLawrence Livermore National Laboratory Oct 2012 - Dec 2012Livermore, Ca, UsWorking on temporal graph generation and models. -
Graduate Student InternLivingsocial May 2012 - Aug 2012Washington, Dc, UsStudied relational incentivization related to the Me+3 program. -
Student CoopNasa Jan 2005 - Aug 2011Washington, Dc, UsA variety of positions, notably with the Automation, Robotics and Simulation Division. Have used Monte Carlo methods for localizing objects in fabrics with touch sensors, and am currently using LADAR for object detection/avoidance with the Chariot SEV.
Joel Pfeiffer Skills
Joel Pfeiffer Education Details
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Purdue UniversityComputer Science -
Purdue UniversityStatistics
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University Of Colorado BoulderComputer Science
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New Mexico State UniversityComputer Science; Math
Frequently Asked Questions about Joel Pfeiffer
What company does Joel Pfeiffer work for?
Joel Pfeiffer works for Microsoft
What is Joel Pfeiffer's role at the current company?
Joel Pfeiffer's current role is Principal ML Scientist @ Microsoft | PhD in Computer Science.
What is Joel Pfeiffer's email address?
Joel Pfeiffer's email address is jo****@****oft.com
What is Joel Pfeiffer's direct phone number?
Joel Pfeiffer's direct phone number is +157549*****
What schools did Joel Pfeiffer attend?
Joel Pfeiffer attended Purdue University, Purdue University, University Of Colorado Boulder, New Mexico State University.
What skills is Joel Pfeiffer known for?
Joel Pfeiffer has skills like Fortran, Information Retrieval, R, Distributed Systems, Algorithms, C, Perl, Matlab, Artificial Intelligence, Programming, Latex, Java.
Who are Joel Pfeiffer's colleagues?
Joel Pfeiffer's colleagues are Samskruthi Dibbikar, Aya Ayoub, Sandeep Nag, Ahmed Yehya, Dara Darabi, Amy June Sousa, Phd, Deep Prodseven.
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