Temporal Information Extraction for Question AnsweringUsing Syntactic Dependencies in an LSTM-based Architecture
Table 4: timex and event evaluation on validation set.
['[BOLD] Annotation', '[BOLD] Prec', '[BOLD] Rec', '[BOLD] F1']
As mentioned earlier, we do not attempt to tag event attributes. Since the vast majority of tokens are outside of event mention boundaries, we set higher weights for the positive class. In order to answer questions about temporal relations, it is not particularly harmful to introduce spurious events, but missing an event makes it impossible to answer any question related to it. Therefore we intentionally boost the recall while sacrificing precision. For events, partial overlap of mention boundaries is considered an error.