Mihail Douhaniaris
Mihail Douhaniaris is a Senior Data Scientist at GetYourGuide, where he specializes in improving the marketplace ranking algorithms to improve search relevance. His work helps travelers find experiences that match their preferences more effectively. Beyond his role, Mihail is deeply interested in responsible AI, ML observability, and the challenges of deploying machine learning at scale.
Sessions
GetYourGuide, a global marketplace for travel experiences, reached diminishing returns with its XGBoost-based ranking system. We switched to a Deep Learning pipeline in just nine months, maintaining high throughput and low latency. We iterated on over 50 offline models and conducted more than 10 live A/B tests, ultimately deploying a PyTorch transformer that yielded significant gains. In this talk, we will share our phased approach—from a simple baseline to a high-impact launch—and discuss the key operational and modeling challenges we faced. Learn how to transition from tree-based methods to neural networks and unlock new possibilities for real-time ranking.