We are excited to announce the Call for Participation for NTCIR-19 Tip-of-the-Tongue (ToT) Shared Task. ToT known-item retrieval is defined as “an item identification task in which the searcher has previously experienced an item but cannot recall a reliable identifier”—i.e., “It’s on the tip of my tongue…”. After 3 successful years as a TREC Track, the ToT shared task is expanding to NTCIR for 2026. The NTCIR-19 ToT Shared Task will focus on open-domain ToT information needs in multiple languages (English, Chinese, Japanese, and Korean). You can participate in the shared task in any subset of these languages, and you are also welcome to present your work remotely at the NTCIR conference in Tokyo in December 2026.
Please visit the following websites for further information. Task guidelines: https://ntcir-tot.github.io/guidelines Registration: https://research.nii.ac.jp/ntcir/ntcir-19/howto.html (Deadline: June 1)
Important dates March 27: Release corpus and training queries May: Release test queries June 1st: Deadline for registration July (tentative): Deadline for submitting runs
Please consider participating and help us spread the word!
Best regards, Fernando Diaz On behalf of the NTCIR-19 ToT Shared Task organizers