To fill this gap, we ran four keyphrase extraction systems on four commonly-used datasets of varying sources, including Inspec abstracts (Hulth, 2003), DUC-2001 news articles (Over, 2001), scientific papers (Kim et al., 2010b), and meeting transcripts (Liu et al., 2009a).
we randomly selected 25 documents from each of these 3 A more detailed analysis of the results of the SemEval-2010 shared task and the approaches adopted by the participating systems can be found in Kim et al.