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Overview of the TREC 2004 Question Answering Track



Ellen M. Voorhees


The TREC 2004 Question Answering track contained a single task in which question series were used to define a set of targets. Each series contained factoid and list questions and related to a single target. The final question in the series was an Other question that asked for additional information about the target that was not covered by previous questions in the series. Each question type was evaluated separately with the final score a weighted average of the different component scores. Applying the combined measure on a per-series basis produces a QA task evaluation that more closely mimics classic document retrieval evaluation.
Special Publication (NIST SP) - 500-261
Report Number


Voorhees, E. (2005), Overview of the TREC 2004 Question Answering Track, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed April 19, 2024)
Created August 1, 2005, Updated November 10, 2018