AdaptEx: A Self-Service Contextual Bandit Platform
This is an incremental application of existing contextual bandit methods to a specific domain (Expedia Group's platform) for improving user personalization and testing efficiency.
The paper presents AdaptEx, a self-service contextual bandit platform used at Expedia Group to personalize user experiences at scale by leveraging multi-armed bandit algorithms that consider visitor context and learn from interactions. It aims to improve user experiences while reducing costs and time compared to traditional testing methods, enabling quick iteration toward optimal solutions even in dynamic and cold-start scenarios.
This paper presents AdaptEx, a self-service contextual bandit platform widely used at Expedia Group, that leverages multi-armed bandit algorithms to personalize user experiences at scale. AdaptEx considers the unique context of each visitor to select the optimal variants and learns quickly from every interaction they make. It offers a powerful solution to improve user experiences while minimizing the costs and time associated with traditional testing methods. The platform unlocks the ability to iterate towards optimal product solutions quickly, even in ever-changing content and continuous "cold start" situations gracefully.