Since the code from (Yang et al., 2015) is available, we use it (rather than (Jurczyk et al., 2016)) to assist our analysis.
as we will show using state-of-theart Multiple Instance Learning (MIL) algorithms in Section 4, P 2 by itself is currently a very challenging task, partly because of the difficulty of extracting features from a set of candidate answers that are effective for answer triggering.