### TREC Temporal Summarization Expanded Dataset ### This is an enhanced version of the TREC Temporal Summarization 2013-2015 test collection. In particular, it contains two main folders: - SyntheticSystems: These are system runs generated for the track that have known performance levels. We suggest using these as additional baselines. - ExpandedGroundTruth: These are expanded updates and matched sets that have had automatic match expansion applied, in particular semnatic based item- item expansion. We suggest using these expanded assessments in cases where you have a new system that is sufering from very low completeness under the original assessments. More information can be found in the paper: @inproceedings{mccreadie2018automatic, title={Automatic Ground Truth Expansion for Timeline Evaluation}, author={McCreadie, Richard and Macdonald, Craig and Ounis, Iadh}, booktitle={The 41st International ACM SIGIR Conference on Research \& Development in Information Retrieval}, pages={685--694}, year={2018}, organization={ACM} }