Chenhua Chen, 
   Alexis Palmer and 
   Caroline Sporleder. Enhancing active learning for semantic role labeling via compressed dependency trees.  In Proceedings of the Fifth International Joint Conference on Natural Language Processing : IJCNLP 2011 ; Chiang Mai, Thailand, Pages 183–191, Chiang Mai, 8-13 November  2011.      google Note: ISBN/ISSN: 978-974-466-564-5.
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