Sentence-level quality estimation by predicting HTER as a multi-component metric

Abstract

This submission investigates alternative machine learning models for predicting the HTER score on the sentence level. Instead of directly predicting the HTER score, we suggest a model that jointly predicts the amount of the 4 distinct post-editing operations, which are then used to calculate the HTER score. This also gives the possibility to correct invalid (e.g. negative) predicted values prior to the calculation of the HTER score. Without any feature exploration, a multi-layer perceptron with 4 outputs yields small but significant improvements over the baseline.

arXiv commentPreview for the Quality Estimation Shared Task Description Paper for the 2nd Conference of Machine Translation