Antonios Anastasopoulos

(Αντώνης Αναστασόπουλος) [a guide to my name]

I am a post-doc with NeuLab at the Language Technologies Institute at Carnegie Mellon University. I am interested in various aspects of multilingual Natural Language Processing and Machine Learning, with a main focus on Machine Translation and Speech Recognition for endangered languages and low-resource settings in general.

Previously, I completed my PhD at the Computer Science and Engineering Department at the University of Notre Dame, working with Prof. David Chiang and his NLP group. My dissertation was on Computational Tools for Endangered Language Documentation.

I did my undergrad (B.Sc.-M.Sc.) on Electrical and Computer Engineering at the National Technical University of Athens, Greece.

News

Research

2019

Pushing the Limits of Low-Resource Morphological Inflection
Antonios Anastasopoulos and Graham Neubig, EMNLP 2019. to appear
[pdf] [code] [poster] [video] [bibtex]
Investigating Meta-Learning Algorithms for Low-Resource Natural Language Understanding Tasks
Zi-Yi Dou, Keyi Yu, and Antonios Anastasopoulos, EMNLP 2019. to appear
[pdf] [slides] [bibtex]
Unsupervised Domain Adaptation for Neural Machine Translation with Domain-Aware Feature Embeddings
Zi-Yi Dou, Junjie Hu, Antonios Anastasopoulos, and Graham Neubig, EMNLP 2019. to appear
[pdf] [poster] [bibtex]
An Analysis of Source-Side Grammatical Errors in NMT
Antonios Anastasopoulos, BlackboxNLP 2019
[pdf] [poster] [bibtex]
Generalized Data Augmentation for Low-Resource Translation
Mengzhou Xia, Xiang Kong, Antonios Anastasopoulos, and Graham Neubig, ACL 2019
[pdf] [slides] [bibtex]
Choosing Transfer Languages for Cross-Lingual Learning
Yu-Hsiang Lin, Chian-Yu Chen, Jean Lee, Zirui Li, Yuyan Zhang, Mengzhou Xia, Shruti Rijhwani, Junxian He, Zhisong Zhang, Xuezhe Ma, Antonios Anastasopoulos, Patrick Littell, and Graham Neubig, ACL 2019
[pdf] [poster] [code] [bibtex]
Findings of the First Shared Task on Machine Translation Robustness
Xian Li, Paul Michel, Antonios Anastasopoulos, Yonatan Belinkov, Nadir Durrani, Orhan Firat, Philipp Koehn, Graham Neubig, Juan Pino and Hassan Sajjad, WMT 2019
[pdf] [bibtex]
Neural Language Modeling with Visual Features
Antonios Anastasopoulos, Shankar Kumar, and Hank Liao, preprint
[pdf] [bibtex]
Neural Machine Translation of Text from Non-Native Speakers
Antonios Anastasopoulos, Alison Lui, Toan Q. Nguyen, and David Chiang, NAACL 2019
[pdf] [code+data] [slides] [bibtex]
Improving Robustness of Neural Machine Translation with Multi-task Learning
Shuyan Zhou, Xiangkai Zeng, Yingqi Zhou, Antonios Anastasopoulos, Graham Neubig, WMT 2019
[pdf] [code] [bibtex]
[PhD Dissertation] Computational Tools for Endangered Language Documentation
Antonios Anastasopoulos, 2019
[pdf] [bibtex]

2018

Freezing Subnetworks to Analyze Domain Adaptation in Neural Machine Translation
Brian Thompson, Huda Khayrallah, Antonios Anastasopoulos, Arya McCarthy, Kevin Duh, Rebecca Marvin, Paul McNamee, Jeremy Gwinnup, Tim Anderson, and Philipp Koehn, WMT 2018
[pdf] [bibtex]
Part-of-Speech Tagging in an Endangered Language: a Parallel Griko-Italian Resource
Antonios Anastasopoulos, Marika Lekakou, Josep Quer, Eleni Zimianiti, Justin DeBenedetto, and David Chiang, COLING 2018
[pdf] [resource] [bibtex]
Leveraging translations for speech transcription in low-resource settings
Antonios Anastasopoulos and David Chiang, Interspeech 2018
[pdf] [code] [bibtex]
Tied Multitask Learning for Neural Speech Translation
Antonios Anastasopoulos and David Chiang, NAACL-HLT 2018
[pdf] [code] [slides] [bibtex]
A small Griko-Italian speech translation corpus
Marcely Zanon-Boito, Antonios Anastasopoulos, Marika Lekakou, Aline Villavicencio, and Laurent Besacier, SLTU 2018
[pdf] [corpus] [bibtex]

2017

Spoken Term Discovery for Language Documentation using Translations
Antonios Anastasopoulos, Sameer Bansal, Sharon Goldwater, Adam Lopez, and David Chiang, SCNLP, September 2017
[pdf] [slides] [bibtex]
A case study on using speech-to-translation alignments for language documentation
Antonios Anastasopoulos and David Chiang, ComputEL-2, March 2017
[pdf] [slides] [tools+code] [bibtex]
DyNet: The Dynamic Neural Network Toolkit
Graham Neubig, Chris Dyer, Yoav Goldberg, Austin Matthews, Waleed Ammar, Antonios Anastasopoulos, Miguel Ballesteros, David Chiang, Daniel Clothiaux, Trevor Cohn, et al.
[pdf] [code+tutorial] [website] [bibtex]

2016

An Unsupervised Probability Model for Speech-to-Translation Alignment of Low-Resource Languages
Antonios Anastasopoulos, David Chiang, and Long Duong, EMNLP, November 2016
[pdf] [slides] [code] [bibtex]
An Attentional Model for Speech Translation Without Transcription
Long Duong, Antonios Anastasopoulos, Trevor Cohn, Steven Bird and David Chiang, NAACL HLT, June 2016
[pdf] [slides] [code] [bibtex]

2014

Online and Multitask learning for Machine Translation Quality Estimation in Real-world scenarios
J.G. Camargo de Souza, M. Turchi, A. Anastasopoulos and M. Negri, CLIC, December 2014
[pdf]
Adaptive Quality Estimation for Machine Translation
M. Turchi, A. Anastasopoulos, J.G. Camargo de Souza and M. Negri, ACL 2014
[pdf] [poster] [code] [bibtex]
(Diploma Thesis) Online Learning for Automatic Quality Estimation of Machine Translation Output
Antonis Anastasopoulos, Athens, April 2014.
Supervisors: Yanis Maistros (ECE, NTUA) and Marco Turchi, Matteo Negri (FBK, Trento)
[pdf] [slides] [bibtex]

2013

Documentation and analysis of an endangered language: aspects of the grammar of Griko.
Lekakou Marika, Valeria Baldissera and Antonis Anastasopoulos (2013).
[url] [bibtex]
Explicit Objects and Polysemy
S. Markantonatou, A. Anastasopoulos and Y. Maistros, ICGL11, Rhodes 2013
[poster]
Using noun and clitic frequencies to study verb transitivity in Modern Greek
A. Anastasopoulos, S. Markantonatou and Y. Maistros, ALT10, Leipzig 2013
[abstract]

Teaching

Awards