Monday, February 29, 2016 - 13:30

Combining dependency parsers using error rates


Dependency parsing accuracy has been recently improved with new algorithms, for example transition-based parsing with dynamic oracle. Even so, there is room for further improvement of parsing accuracy. In this speech, I present a system of combination of several parsers with weights based on error rates of the parsers calculated on parsed data for parameters such as POS of dependent node, POS of governing node, distance of nodes etc. An improvement of 1.3% UAS accuracy is achieved.