Explore cutting-edge techniques in first-stage retrieval optimization through this 16-minute conference talk from SIGIR 2024. Delve into the research of Watheq Mansour, Shengyao Zhuang, Guido Zuccon, and Joel Mackenzie as they revisit and analyze document expansion and filtering methods. Gain insights into improving search efficiency and effectiveness, understanding how these approaches can enhance information retrieval systems. Learn about the latest advancements in search technology and their potential impact on real-world applications.