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Table 2 Chronological period covered by the training, validation and test sets for both data sets

From: Large-scale online semantic indexing of biomedical articles via an ensemble of multi-label classification models

 

Period

Data set A

 

Training set

October 2007 - January 2012

Validation set

December 2012 - July 2013

Test set

July 2013 - January 2014

Data set B

 

Training set

July 2013 - October 2013

Validation set

October 2013 - December 2013

Test set

December 2013 - January 2014