Report on the 9th ACM SIGIR / the 13th International Conference on the Theory of Information Retrieval (ICTIR 2023).

The 9th ACM SIGIR / The 13th International Conference on the Theory of Information Retrieval (ICTIR 2023) held in Taiwan co-located with SIGIR 2023. This brief report provides an overview of ICTIR 2023 and introduces the student reviewer program, which provides an opportunity for the students to understand and contribute to the conference review process. Date : 23 July 2023. Website : https://sigir.org/ictir2023/.