What question did this study set out to answer?

The central aim is to overview the NTCIR-16 Session Search task and its components.

April 1, 2026Open Access

Overview of the NTCIR-16 Session Search (SS) Task

Puntos clave

The central aim is to overview the NTCIR-16 Session Search task and its components.
Provided an overview of task background and data used.
Described the Fully Observed Session Search and Partially Observed Session Search subtasks.
Evaluated submissions from 6 teams with 28 runs.
Applied specific evaluation measures to assess performance.
Presented evaluation results from the submitted runs.
Highlighted differences in performance across subtasks.
Discussed findings relevant to session search effectiveness.

Resumen

This is an overview of the NTCIR-16 Session Search (SS) task. The task features the Fully Observed Session Search subtask (FOSS) and the Partially Observed Session Search subtask (POSS). This year, we received 28 runs from 6 teams in total. This paper will describe the task background, data, subtasks, evaluation measures, and the evaluation results, respectively.

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