Ioannis Korkontzelos


2014

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Using a Random Forest Classifier to Compile Bilingual Dictionaries of Technical Terms from Comparable Corpora
Georgios Kontonatsios | Ioannis Korkontzelos | Jun’ichi Tsujii | Sophia Ananiadou
Proceedings of the 14th Conference of the European Chapter of the Association for Computational Linguistics, volume 2: Short Papers

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Comparable Study of Event Extraction in Newswire and Biomedical Domains
Makoto Miwa | Paul Thompson | Ioannis Korkontzelos | Sophia Ananiadou
Proceedings of COLING 2014, the 25th International Conference on Computational Linguistics: Technical Papers

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Combining String and Context Similarity for Bilingual Term Alignment from Comparable Corpora
Georgios Kontonatsios | Ioannis Korkontzelos | Jun’ichi Tsujii | Sophia Ananiadou
Proceedings of the 2014 Conference on Empirical Methods in Natural Language Processing (EMNLP)

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Locating Requests among Open Source Software Communication Messages
Ioannis Korkontzelos | Sophia Ananiadou
Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14)

As a first step towards assessing the quality of support offered online for Open Source Software (OSS), we address the task of locating requests, i.e., messages that raise an issue to be addressed by the OSS community, as opposed to any other message. We present a corpus of online communication messages randomly sampled from newsgroups and bug trackers, manually annotated as requests or non-requests. We identify several linguistically shallow, content-based heuristics that correlate with the classification and investigate the extent to which they can serve as independent classification criteria. Then, we train machine-learning classifiers on these heuristics. We experiment with a wide range of settings, such as different learners, excluding some heuristics and adding unigram features of various parts-of-speech and frequency. We conclude that some heuristics can perform well, while their accuracy can be improved further using machine learning, at the cost of obtaining manual annotations.

2013

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Towards a Better Understanding of Discourse: Integrating Multiple Discourse Annotation Perspectives Using UIMA
Claudiu Mihăilă | Georgios Kontonatsios | Riza Theresa Batista-Navarro | Paul Thompson | Ioannis Korkontzelos | Sophia Ananiadou
Proceedings of the 7th Linguistic Annotation Workshop and Interoperability with Discourse

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Using a Random Forest Classifier to recognise translations of biomedical terms across languages
Georgios Kontonatsios | Ioannis Korkontzelos | Sophia Ananiadou | Jun’ichi Tsujii
Proceedings of the Sixth Workshop on Building and Using Comparable Corpora

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Extending an interoperable platform to facilitate the creation of multilingual and multimodal NLP applications
Georgios Kontonatsios | Paul Thompson | Riza Theresa Batista-Navarro | Claudiu Mihăilă | Ioannis Korkontzelos | Sophia Ananiadou
Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics: System Demonstrations

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SemEval-2013 Task 5: Evaluating Phrasal Semantics
Ioannis Korkontzelos | Torsten Zesch | Fabio Massimo Zanzotto | Chris Biemann
Second Joint Conference on Lexical and Computational Semantics (*SEM), Volume 2: Proceedings of the Seventh International Workshop on Semantic Evaluation (SemEval 2013)

2011

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Enrichment and Structuring of Archival Description Metadata
Kalliopi Zervanou | Ioannis Korkontzelos | Antal van den Bosch | Sophia Ananiadou
Proceedings of the 5th ACL-HLT Workshop on Language Technology for Cultural Heritage, Social Sciences, and Humanities

2010

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Can Recognising Multiword Expressions Improve Shallow Parsing?
Ioannis Korkontzelos | Suresh Manandhar
Human Language Technologies: The 2010 Annual Conference of the North American Chapter of the Association for Computational Linguistics

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Estimating Linear Models for Compositional Distributional Semantics
Fabio Massimo Zanzotto | Ioannis Korkontzelos | Francesca Fallucchi | Suresh Manandhar
Proceedings of the 23rd International Conference on Computational Linguistics (Coling 2010)

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UoY: Graphs of Unambiguous Vertices for Word Sense Induction and Disambiguation
Ioannis Korkontzelos | Suresh Manandhar
Proceedings of the 5th International Workshop on Semantic Evaluation

2009

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Graph Connectivity Measures for Unsupervised Parameter Tuning of Graph-Based Sense Induction Systems.
Ioannis Korkontzelos | Ioannis Klapaftis | Suresh Manandhar
Proceedings of the Workshop on Unsupervised and Minimally Supervised Learning of Lexical Semantics

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Detecting Compositionality in Multi-Word Expressions.
Ioannis Korkontzelos | Suresh Manandhar
Proceedings of the ACL-IJCNLP 2009 Conference Short Papers