Grzegorz Kondrak


2020

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UAlberta at SemEval-2020 Task 2: Using Translations to Predict Cross-Lingual Entailment
Bradley Hauer | Amir Ahmad Habibi | Yixing Luan | Arnob Mallik | Grzegorz Kondrak
Proceedings of the Fourteenth Workshop on Semantic Evaluation

We investigate the hypothesis that translations can be used to identify cross-lingual lexical entailment. We propose novel methods that leverage parallel corpora, word embeddings, and multilingual lexical resources. Our results demonstrate that the implementation of these ideas leads to improvements in predicting entailment.

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Improving Word Sense Disambiguation with Translations
Yixing Luan | Bradley Hauer | Lili Mou | Grzegorz Kondrak
Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP)

It has been conjectured that multilingual information can help monolingual word sense disambiguation (WSD). However, existing WSD systems rarely consider multilingual information, and no effective method has been proposed for improving WSD by generating translations. In this paper, we present a novel approach that improves the performance of a base WSD system using machine translation. Since our approach is language independent, we perform WSD experiments on several languages. The results demonstrate that our methods can consistently improve the performance of WSD systems, and obtain state-ofthe-art results in both English and multilingual WSD. To facilitate the use of lexical translation information, we also propose BABALIGN, an precise bitext alignment algorithm which is guided by multilingual lexical correspondences from BabelNet.

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Low-Resource G2P and P2G Conversion with Synthetic Training Data
Bradley Hauer | Amir Ahmad Habibi | Yixing Luan | Arnob Mallik | Grzegorz Kondrak
Proceedings of the 17th SIGMORPHON Workshop on Computational Research in Phonetics, Phonology, and Morphology

This paper presents the University of Alberta systems and results in the SIGMORPHON 2020 Task 1: Multilingual Grapheme-to-Phoneme Conversion. Following previous SIGMORPHON shared tasks, we define a low-resource setting with 100 training instances. We experiment with three transduction approaches in both standard and low-resource settings, as well as on the related task of phoneme-to-grapheme conversion. We propose a method for synthesizing training data using a combination of diverse models.

2019

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Joint Approach to Deromanization of Code-mixed Texts
Rashed Rubby Riyadh | Grzegorz Kondrak
Proceedings of the Sixth Workshop on NLP for Similar Languages, Varieties and Dialects

The conversion of romanized texts back to the native scripts is a challenging task because of the inconsistent romanization conventions and non-standard language use. This problem is compounded by code-mixing, i.e., using words from more than one language within the same discourse. In this paper, we propose a novel approach for handling these two problems together in a single system. Our approach combines three components: language identification, back-transliteration, and sequence prediction. The results of our experiments on Bengali and Hindi datasets establish the state of the art for the task of deromanization of code-mixed texts.

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Cognate Projection for Low-Resource Inflection Generation
Bradley Hauer | Amir Ahmad Habibi | Yixing Luan | Rashed Rubby Riyadh | Grzegorz Kondrak
Proceedings of the 16th Workshop on Computational Research in Phonetics, Phonology, and Morphology

We propose cognate projection as a method of crosslingual transfer for inflection generation in the context of the SIGMORPHON 2019 Shared Task. The results on four language pairs show the method is effective when no low-resource training data is available.

2018

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Combining Neural and Non-Neural Methods for Low-Resource Morphological Reinflection
Saeed Najafi | Bradley Hauer | Rashed Rubby Riyadh | Leyuan Yu | Grzegorz Kondrak
Proceedings of the CoNLL–SIGMORPHON 2018 Shared Task: Universal Morphological Reinflection

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Comparison of Assorted Models for Transliteration
Saeed Najafi | Bradley Hauer | Rashed Rubby Riyadh | Leyuan Yu | Grzegorz Kondrak
Proceedings of the Seventh Named Entities Workshop

We report the results of our experiments in the context of the NEWS 2018 Shared Task on Transliteration. We focus on the comparison of several diverse systems, including three neural MT models. A combination of discriminative, generative, and neural models obtains the best results on the development sets. We also put forward ideas for improving the shared task.

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String Transduction with Target Language Models and Insertion Handling
Garrett Nicolai | Saeed Najafi | Grzegorz Kondrak
Proceedings of the Fifteenth Workshop on Computational Research in Phonetics, Phonology, and Morphology

Many character-level tasks can be framed as sequence-to-sequence transduction, where the target is a word from a natural language. We show that leveraging target language models derived from unannotated target corpora, combined with a precise alignment of the training data, yields state-of-the art results on cognate projection, inflection generation, and phoneme-to-grapheme conversion.

2017

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If you can’t beat them, join them: the University of Alberta system description
Garrett Nicolai | Bradley Hauer | Mohammad Motallebi | Saeed Najafi | Grzegorz Kondrak
Proceedings of the CoNLL SIGMORPHON 2017 Shared Task: Universal Morphological Reinflection

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Morphological Analysis without Expert Annotation
Garrett Nicolai | Grzegorz Kondrak
Proceedings of the 15th Conference of the European Chapter of the Association for Computational Linguistics: Volume 2, Short Papers

The task of morphological analysis is to produce a complete list of lemma+tag analyses for a given word-form. We propose a discriminative string transduction approach which exploits plain inflection tables and raw text corpora, thus obviating the need for expert annotation. Experiments on four languages demonstrate that our system has much higher coverage than a hand-engineered FST analyzer, and is more accurate than a state-of-the-art morphological tagger.

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Bootstrapping Unsupervised Bilingual Lexicon Induction
Bradley Hauer | Garrett Nicolai | Grzegorz Kondrak
Proceedings of the 15th Conference of the European Chapter of the Association for Computational Linguistics: Volume 2, Short Papers

The task of unsupervised lexicon induction is to find translation pairs across monolingual corpora. We develop a novel method that creates seed lexicons by identifying cognates in the vocabularies of related languages on the basis of their frequency and lexical similarity. We apply bidirectional bootstrapping to a method which learns a linear mapping between context-based vector spaces. Experimental results on three language pairs show consistent improvement over prior work.

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Identifying Cognate Sets Across Dictionaries of Related Languages
Adam St Arnaud | David Beck | Grzegorz Kondrak
Proceedings of the 2017 Conference on Empirical Methods in Natural Language Processing

We present a system for identifying cognate sets across dictionaries of related languages. The likelihood of a cognate relationship is calculated on the basis of a rich set of features that capture both phonetic and semantic similarity, as well as the presence of regular sound correspondences. The similarity scores are used to cluster words from different languages that may originate from a common proto-word. When tested on the Algonquian language family, our system detects 63% of cognate sets while maintaining cluster purity of 70%.

2016

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Integrating Morphological Desegmentation into Phrase-based Decoding
Mohammad Salameh | Colin Cherry | Grzegorz Kondrak
Proceedings of the 2016 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies

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Leveraging Inflection Tables for Stemming and Lemmatization.
Garrett Nicolai | Grzegorz Kondrak
Proceedings of the 54th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)

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Morphological Reinflection via Discriminative String Transduction
Garrett Nicolai | Bradley Hauer | Adam St Arnaud | Grzegorz Kondrak
Proceedings of the 14th SIGMORPHON Workshop on Computational Research in Phonetics, Phonology, and Morphology

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Morphological Segmentation Can Improve Syllabification
Garrett Nicolai | Lei Yao | Grzegorz Kondrak
Proceedings of the 14th SIGMORPHON Workshop on Computational Research in Phonetics, Phonology, and Morphology

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Decoding Anagrammed Texts Written in an Unknown Language and Script
Bradley Hauer | Grzegorz Kondrak
Transactions of the Association for Computational Linguistics, Volume 4

Algorithmic decipherment is a prime example of a truly unsupervised problem. The first step in the decipherment process is the identification of the encrypted language. We propose three methods for determining the source language of a document enciphered with a monoalphabetic substitution cipher. The best method achieves 97% accuracy on 380 languages. We then present an approach to decoding anagrammed substitution ciphers, in which the letters within words have been arbitrarily transposed. It obtains the average decryption word accuracy of 93% on a set of 50 ciphertexts in 5 languages. Finally, we report the results on the Voynich manuscript, an unsolved fifteenth century cipher, which suggest Hebrew as the language of the document.

2015

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What Matters Most in Morphologically Segmented SMT Models?
Mohammad Salameh | Colin Cherry | Grzegorz Kondrak
Proceedings of the Ninth Workshop on Syntax, Semantics and Structure in Statistical Translation

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Morpho-syntactic Regularities in Continuous Word Representations: A multilingual study.
Garrett Nicolai | Colin Cherry | Grzegorz Kondrak
Proceedings of the 1st Workshop on Vector Space Modeling for Natural Language Processing

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Multiple System Combination for Transliteration
Garrett Nicolai | Bradley Hauer | Mohammad Salameh | Adam St Arnaud | Ying Xu | Lei Yao | Grzegorz Kondrak
Proceedings of the Fifth Named Entity Workshop

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English orthography is not “close to optimal”
Garrett Nicolai | Grzegorz Kondrak
Proceedings of the 2015 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies

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Inflection Generation as Discriminative String Transduction
Garrett Nicolai | Colin Cherry | Grzegorz Kondrak
Proceedings of the 2015 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies

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Joint Generation of Transliterations from Multiple Representations
Lei Yao | Grzegorz Kondrak
Proceedings of the 2015 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies

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A Lexicalized Tree Kernel for Open Information Extraction
Ying Xu | Christoph Ringlstetter | Mi-Young Kim | Grzegorz Kondrak | Randy Goebel | Yusuke Miyao
Proceedings of the 53rd Annual Meeting of the Association for Computational Linguistics and the 7th International Joint Conference on Natural Language Processing (Volume 2: Short Papers)

2014

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Lattice Desegmentation for Statistical Machine Translation
Mohammad Salameh | Colin Cherry | Grzegorz Kondrak
Proceedings of the 52nd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)

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Does the Phonology of L1 Show Up in L2 Texts?
Garrett Nicolai | Grzegorz Kondrak
Proceedings of the 52nd Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers)

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10 Open Questions in Computational Morphonology
Grzegorz Kondrak
Proceedings of the 2014 Joint Meeting of SIGMORPHON and SIGFSM

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Solving Substitution Ciphers with Combined Language Models
Bradley Hauer | Ryan Hayward | Grzegorz Kondrak
Proceedings of COLING 2014, the 25th International Conference on Computational Linguistics: Technical Papers

2013

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Cognate and Misspelling Features for Natural Language Identification
Garrett Nicolai | Bradley Hauer | Mohammad Salameh | Lei Yao | Grzegorz Kondrak
Proceedings of the Eighth Workshop on Innovative Use of NLP for Building Educational Applications

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Identification of Speakers in Novels
Hua He | Denilson Barbosa | Grzegorz Kondrak
Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)

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Automatic Generation of English Respellings
Bradley Hauer | Grzegorz Kondrak
Proceedings of the 2013 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies

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Reversing Morphological Tokenization in English-to-Arabic SMT
Mohammad Salameh | Colin Cherry | Grzegorz Kondrak
Proceedings of the 2013 NAACL HLT Student Research Workshop

2012

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Leveraging supplemental representations for sequential transduction
Aditya Bhargava | Grzegorz Kondrak
Proceedings of the 2012 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies

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Similarity Patterns in Words (Invited talk)
Grzegorz Kondrak
Proceedings of the EACL 2012 Joint Workshop of LINGVIS & UNCLH

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Transliteration Experiments on Chinese and Arabic
Grzegorz Kondrak | Xingkai Li | Mohammad Salameh
Proceedings of the 4th Named Entity Workshop (NEWS) 2012

2011

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Leveraging Transliterations from Multiple Languages
Aditya Bhargava | Bradley Hauer | Grzegorz Kondrak
Proceedings of the 3rd Named Entities Workshop (NEWS 2011)

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The application of chordal graphs to inferring phylogenetic trees of languages
Jessica Enright | Grzegorz Kondrak
Proceedings of 5th International Joint Conference on Natural Language Processing

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Clustering Semantically Equivalent Words into Cognate Sets in Multilingual Lists
Bradley Hauer | Grzegorz Kondrak
Proceedings of 5th International Joint Conference on Natural Language Processing

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How do you pronounce your name? Improving G2P with transliterations
Aditya Bhargava | Grzegorz Kondrak
Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies

2010

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Language identification of names with SVMs
Aditya Bhargava | Grzegorz Kondrak
Human Language Technologies: The 2010 Annual Conference of the North American Chapter of the Association for Computational Linguistics

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Integrating Joint n-gram Features into a Discriminative Training Framework
Sittichai Jiampojamarn | Colin Cherry | Grzegorz Kondrak
Human Language Technologies: The 2010 Annual Conference of the North American Chapter of the Association for Computational Linguistics

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Transliteration Generation and Mining with Limited Training Resources
Sittichai Jiampojamarn | Kenneth Dwyer | Shane Bergsma | Aditya Bhargava | Qing Dou | Mi-Young Kim | Grzegorz Kondrak
Proceedings of the 2010 Named Entities Workshop

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Application of the Tightness Continuum Measure to Chinese Information Retrieval
Ying Xu | Randy Goebel | Christoph Ringlstetter | Grzegorz Kondrak
Proceedings of the 2010 Workshop on Multiword Expressions: from Theory to Applications

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Letter-Phoneme Alignment: An Exploration
Sittichai Jiampojamarn | Grzegorz Kondrak
Proceedings of the 48th Annual Meeting of the Association for Computational Linguistics

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Predicting the Semantic Compositionality of Prefix Verbs
Shane Bergsma | Aditya Bhargava | Hua He | Grzegorz Kondrak
Proceedings of the 2010 Conference on Empirical Methods in Natural Language Processing

2009

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DirecTL: a Language Independent Approach to Transliteration
Sittichai Jiampojamarn | Aditya Bhargava | Qing Dou | Kenneth Dwyer | Grzegorz Kondrak
Proceedings of the 2009 Named Entities Workshop: Shared Task on Transliteration (NEWS 2009)

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A Ranking Approach to Stress Prediction for Letter-to-Phoneme Conversion
Qing Dou | Shane Bergsma | Sittichai Jiampojamarn | Grzegorz Kondrak
Proceedings of the Joint Conference of the 47th Annual Meeting of the ACL and the 4th International Joint Conference on Natural Language Processing of the AFNLP

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Reducing the Annotation Effort for Letter-to-Phoneme Conversion
Kenneth Dwyer | Grzegorz Kondrak
Proceedings of the Joint Conference of the 47th Annual Meeting of the ACL and the 4th International Joint Conference on Natural Language Processing of the AFNLP

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On the Syllabification of Phonemes
Susan Bartlett | Grzegorz Kondrak | Colin Cherry
Proceedings of Human Language Technologies: The 2009 Annual Conference of the North American Chapter of the Association for Computational Linguistics

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Multiple Word Alignment with Profile Hidden Markov Models
Aditya Bhargava | Grzegorz Kondrak
Proceedings of Human Language Technologies: The 2009 Annual Conference of the North American Chapter of the Association for Computational Linguistics, Companion Volume: Student Research Workshop and Doctoral Consortium

2008

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Automatic Syllabification with Structured SVMs for Letter-to-Phoneme Conversion
Susan Bartlett | Grzegorz Kondrak | Colin Cherry
Proceedings of ACL-08: HLT

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Joint Processing and Discriminative Training for Letter-to-Phoneme Conversion
Sittichai Jiampojamarn | Colin Cherry | Grzegorz Kondrak
Proceedings of ACL-08: HLT

2007

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Applying Many-to-Many Alignments and Hidden Markov Models to Letter-to-Phoneme Conversion
Sittichai Jiampojamarn | Grzegorz Kondrak | Tarek Sherif
Human Language Technologies 2007: The Conference of the North American Chapter of the Association for Computational Linguistics; Proceedings of the Main Conference

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A Fast Method for Parallel Document Identification
Jessica Enright | Grzegorz Kondrak
Human Language Technologies 2007: The Conference of the North American Chapter of the Association for Computational Linguistics; Companion Volume, Short Papers

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Proceedings of Ninth Meeting of the ACL Special Interest Group in Computational Morphology and Phonology
John Nerbonne | T. Mark Ellison | Grzegorz Kondrak
Proceedings of Ninth Meeting of the ACL Special Interest Group in Computational Morphology and Phonology

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Computing and Historical Phonology
John Nerbonne | T. Mark Ellison | Grzegorz Kondrak
Proceedings of Ninth Meeting of the ACL Special Interest Group in Computational Morphology and Phonology

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Creating a Comparative Dictionary of Totonac-Tepehua
Grzegorz Kondrak | David Beck | Philip Dilts
Proceedings of Ninth Meeting of the ACL Special Interest Group in Computational Morphology and Phonology

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Bootstrapping a Stochastic Transducer for Arabic-English Transliteration Extraction
Tarek Sherif | Grzegorz Kondrak
Proceedings of the 45th Annual Meeting of the Association of Computational Linguistics

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Substring-Based Transliteration
Tarek Sherif | Grzegorz Kondrak
Proceedings of the 45th Annual Meeting of the Association of Computational Linguistics

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Alignment-Based Discriminative String Similarity
Shane Bergsma | Grzegorz Kondrak
Proceedings of the 45th Annual Meeting of the Association of Computational Linguistics

2006

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Evaluation of Several Phonetic Similarity Algorithms on the Task of Cognate Identification
Grzegorz Kondrak | Tarek Sherif
Proceedings of the Workshop on Linguistic Distances

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Biomedical Term Recognition with the Perceptron HMM Algorithm
Sittichai Jiampojamarn | Grzegorz Kondrak | Colin Cherry
Proceedings of the HLT-NAACL BioNLP Workshop on Linking Natural Language and Biology

2005

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Learning a Spelling Error Model from Search Query Logs
Farooq Ahmad | Grzegorz Kondrak
Proceedings of Human Language Technology Conference and Conference on Empirical Methods in Natural Language Processing

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Computing Word Similarity and Identifying Cognates with Pair Hidden Markov Models
Wesley Mackay | Grzegorz Kondrak
Proceedings of the Ninth Conference on Computational Natural Language Learning (CoNLL-2005)

2004

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Identification of Confusable Drug Names: A New Approach and Evaluation Methodology
Grzegorz Kondrak | Bonnie Dorr
COLING 2004: Proceedings of the 20th International Conference on Computational Linguistics

2003

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Cognates Can Improve Statistical Translation Models
Grzegorz Kondrak | Daniel Marcu | Kevin Knight
Companion Volume of the Proceedings of HLT-NAACL 2003 - Short Papers

2002

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Determining Recurrent Sound Correspondences by Inducing Translation Models
Grzegorz Kondrak
COLING 2002: The 19th International Conference on Computational Linguistics

2001

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Book Reviews: The Significance of Word Lists
Grzegorz Kondrak
Computational Linguistics, Volume 27, Number 4, December 2001

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Identifying Cognates by Phonetic and Semantic Similarity
Grzegorz Kondrak
Second Meeting of the North American Chapter of the Association for Computational Linguistics

2000

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A New Algorithm for the Alignment of Phonetic Sequences
Grzegorz Kondrak
1st Meeting of the North American Chapter of the Association for Computational Linguistics