[http://www.statmt.org/wmt18/quality-estimation-task.html](http://www.statmt.org/wmt18/quality-estimation-task.html
Specia, Lucia; Logacheva, Varvara; Blain, Frederic; et al., 2018, WMT18 Quality Estimation Shared Task Training and Development Data, LINDAT/CLARIN digital library at the Institute of Formal and Applied Linguistics (ÚFAL), Faculty of Mathematics and Physics, Charles University, http://hdl.handle.net/11372/LRT-2619.)