Stanford's 2013 KBP System

We describe Stanford’s entry in the TACKBP 2013 Slotfilling challenge. Our system makes use of a distantly supervised approach, implementing the multiinstance multi-label system of Surdeanu et al. (2012). In addition, Stanford’s system significantly improved the information retrieval component of the system, as well as the consistency and inference procedure applied after candidate relations have been extracted. Stanford’s 2013 KBP entry achieved an F1 of 31.36 on the 2013 evaluation data, performing above the median entry (15.32 F1).