Our main empirical finding is that though two biases, avoiding center-embedding and favoring shorter dependencies, are conceptually similar (both favor simpler grammars), often they capture different aspects of syntax, leading to different grammars.
our bias cooperates well with additional small syntactic cue such as the one that the sentence root tends to be a verb or a noun, with which our models compete with the strong baseline relying on a larger number of hand crafted rules on POS tags (Naseem et al., 2010).