Avi Ben Yossef

Director of Data Science and AI, First Digital Bank

Director of data science and AI, Big Data & Machine Learning Expert, with over 10 years of experience in building various systems, both from the field of machine learning, recommendation, Big Data, and optimization systems.

Lead of data science team responsible to develop algorithms for solving diverse business challenges, by designing, implementing and developing a unique research operation, ML methods & infrastructure.

Past sessions

Summit Europe 2020 Distributed and Scalable Model Lifecycle Capabilities

November 18, 2020 04:00 PM PT

When working on event level advertising data, you easily find yourself dealing with billions of daily events. The Python's classic data and ML libraries, including Pandas, Scikit-learn, XGBoost and others, were not built for such volumes, which usually mean you'll have to face painful tradeoffs extreme sampling or giving up on important features.

We'll meet to learn how to enable new orders of magnitude of processing power for existing machine learning libraries as AI Infra, and how to leverage distributed ML model lifecycle capabilities to build massive-scale products with bunch of models in production through real world use-cases.

Spark is a distributed computing framework that added new features like pandas UDF by using Pyarrow, that we can use to fit and test multiple models simultaneously based on one of the features for Accuracy improvement, Scale (a large number of models in parallel) & P

Speaker: Avi Ben Yossef

Summit Europe 2020 SHAP & Game Theory For Recommendation Systems

November 17, 2020 04:00 PM PT

Shap for recommendation systems: How to use existing Machine Learning models as a recommendation system. We introduce a game-theoretic approach to the study of recommendation systems with strategic content providers. Such systems should be fair and stable. Showing that traditional approaches fail to satisfy these requirements, we propose the Shapley mediator. We show that the Shapley mediator fulfills the fairness and stability requirements, runs in linear time, and is the only economically efficient mechanism satisfying these properties.

Speaker: Avi Ben Yossef