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Fabio Kepler

Senior AI Research Scientist

Fabio Kepler is a senior research scientist at the fundamental AI team at Unbabel, leading and participating in projects for machine translation and Quality Estimation (QE), whose most recent outcomes were an open-source state-of-the-art framework for QE and the top rank on the WMT QE competition across all tasks. Prior to his current role, Fabio was a full-time professor for almost seven years at the Federal University of Pampa in Brazil, where among other things he created and became the first director of the university's Patent and Technology Transfer Office. He has a Ph.D. from the University of Sao Paulo (2010, with an interim period at the University of Pennsylvania), is the author of more than 50 scientific publications, and actively reviews for top NLP conferences.

Papers published


Unbabel's Participation in the WMT19 Translation Quality Estimation Shared Task

Proceedings of the Fourth Conference on Machine Translation (Volume 3: Shared Task Papers, Day 2) 2019

OpenKiwi: An Open Source Framework for Quality Estimation

Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics: System Demonstrations 2019


Unbabel's Participation in the WMT17 Translation Quality Estimation Shared Task

Proceedings of the Second Conference on Machine Translation 2017

Fusion of Simple Models for Native Language Identification

Proceedings of the 12th Workshop on Innovative Use of NLP for Building Educational Applications 2017

Pushing the Limits of Translation Quality Estimation

Transactions of the Association for Computational Linguistics 2017


Unbabel's Participation in the WMT16 Word-Level Translation Quality Estimation Shared Task

Proceedings of the First Conference on Machine Translation: Volume 2, Shared Task Papers 2016