The 11th ACM SIGIR / The 15th International Conference on the Theory of Information Retrieval

The joint 2025 edition of ACM SIGIR and the International Conference on the Theory of Information Retrieval (ICTIR) unites two complementary traditions: SIGIR's long-standing emphasis on applied information retrieval systems and ICTIR's focus on the formal, mathematical foundations that explain why those systems work. Together they cover ranked retrieval models, neural search architectures, evaluation metrics, query understanding, recommender systems, and the theoretical properties underlying all of them.

This pairing is particularly timely as large language models reshape search, creating new questions about relevance, grounding, and evaluation that demand both rigorous theory and solid empirical practice. The combined program is ideal for IR researchers, data scientists building search products, and theoreticians who want their models to connect to real retrieval problems.