Ben London

Sr. Scientist

Amazon Music

About Me

I am a Sr. Scientist at Amazon Music. Broadly speaking, I research machine learning theory and algorithms, using theoretical analysis to inform the design of new ML algorithms.

I earned my Ph.D. in 2015 at University of Maryland, where I was advised by Lise Getoor and worked closely with Ben Taskar and Bert Huang. My dissertation studied generalization in structured learning, and its relationship to the algorithmic stability of collective inference. I have also worked on: generalization guarantees for randomized learning (such as stochastic gradient methods); recommendation/personalization systems; contextual multi-armed bandits; and counterfactual learning from logged bandit feedback.


  • Statistical Learning Theory
  • Structured Prediction and Probabilistic Graphical Models
  • Bandits and Learning from Logged Bandit Feedback
  • Recommendation and Personalization


  • PhD in Computer Science, 2015

    University of Maryland

  • MSc in Computer Science, 2008

    Columbia University

  • BMu in Music Technology, 2001

    New York University

Recent Posts

New paper accepted at AISTATS 2023

My recent paper on boosting for off-policy learning has been accepted at AI & Statistics (AISTATS) 2023.

AC for NeurIPS 2021

I’m excited to announce that I will serve as an area chair for NeurIPS 2021.

NeurIPS 2020

I will serve as an area chair for NeurIPS 2020.


I will serve as an area chair for ICML 2020 and a Sr. PC member for IJCAI 2020.



Sr. Scientist


Sep 2015 – Present Seattle, WA
I mainly work on bandits and offline policy optimization for recommendation problems.

Research Intern

Google Research

May 2014 – Aug 2014 New York, NY
Explored structured prediction methods for WebTables.

Graduate Research Assistant

University of Maryland, LINQS Lab

Jan 2011 – Sep 2015 College Park, MD
Lise Getoor’s research lab (now located at UC Santa Cruz).

Analytic Software Engineer


Sep 2008 – Aug 2010 Washington, DC
Productionized statistical models.

Software Engineer


Feb 2008 – Aug 2010 Siver Spring, MD