Supervision Unlike many recent composition models (Kalchbrenner and Blunsom, 2013;Kalchbrenner et al., 2014;Socher et al., 2012;Socher et al., 2013, among others), the context-prediction objective of C-PHRASE does not require annotated data, and it is meant to provide generalpurpose representations that can serve in different tasks.
we use syntax to determine the target units that we build representations for (in the sense that we jointly learn representations of their constituents).