As a Senior Machine Learning Engineer for Expedia, Kumar is leading fraud detection and prevention efforts. He uses machine learning and Natural Language Processing models for risk analysis and fraud detection for various Expedia brands. Additionally, Kumar is personally responsible for designing and implementing several highly effective efficiency measures, including recording low latency and heavily optimizing the machine learning pipeline. Previously, he worked for Microsoft on Cortana, the AI virtual assistant for Windows 10 and surface devices. Kumar has an M.S. in Computer Science from the University of Florida, U.S., and a bachelor’s from NIT Trichy.
Kumar Abhishek
Senior Machine Learning Engineer at Expedia
All Sessions by Kumar Abhishek
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Day 1
Jan 19, 2023
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17:15
Data imbalance in machine learning
17:15 - 17:45A talk on how to deal with data imbalance in machine learning/deep learning classification problems. We will discuss classical machine learning techniques of Oversampling, Undersamping, hybrid techniques, and cost-sensitive learning, as well as some advanced deep learning techniques like Dynamic sampling using PyTorch. If time permits, we will discuss how data imbalance affects the calibration of models.Audi 2
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