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    <titleInfo>
        <title>Expanding Parallel Resources for Medium-Density Languages for Free</title>
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    <name type="personal">
        <namePart type="given">Georgi</namePart>
        <namePart type="family">Iliev</namePart>
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        <dateIssued>2012-may</dateIssued>
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            <title>Proceedings of the Eighth International Conference on Language Resources and Evaluation (LREC’12)</title>
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            <publisher>European Language Resources Association (ELRA)</publisher>
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    <abstract>We discuss a previously proposed method for augmenting parallel corpora of limited size for the purposes of machine translation through monolingual paraphrasing of the source language. We develop a three-stage shallow paraphrasing procedure to be applied to the Swedish-Bulgarian language pair for which limited parallel resources exist. The source language exhibits specifics not typical of high-density languages already studied in a similar setting. Paraphrases of a highly productive type of compound nouns in Swedish are generated by a corpus-based technique. Certain Swedish noun-phrase types are paraphrased using basic heuristics. Further we introduce noun-phrase morphological variations for better wordform coverage. We evaluate the performance of a phrase-based statistical machine translation system trained on a baseline parallel corpus and on three stages of artificial enlargement of the source-language training data. Paraphrasing is shown to have no effect on performance for the Swedish-English translation task. We show a small, yet consistent, increase in the BLEU score of Swedish-Bulgarian translations of larger token spans on the first enlargement stage. A small improvement in the overall BLEU score of Swedish-Bulgarian translation is achieved on the second enlargement stage. We find that both improvements justify further research into the method for the Swedish-Bulgarian translation task.</abstract>
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        <url>http://www.lrec-conf.org/proceedings/lrec2012/pdf/743_Paper.pdf</url>
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        <date>2012-may</date>
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%0 Conference Proceedings
%T Expanding Parallel Resources for Medium-Density Languages for Free
%A Iliev, Georgi
%A Genov, Angel
%S Proceedings of the Eighth International Conference on Language Resources and Evaluation (LREC’12)
%D 2012
%8 may
%I European Language Resources Association (ELRA)
%C Istanbul, Turkey
%F iliev-genov-2012-expanding
%X We discuss a previously proposed method for augmenting parallel corpora of limited size for the purposes of machine translation through monolingual paraphrasing of the source language. We develop a three-stage shallow paraphrasing procedure to be applied to the Swedish-Bulgarian language pair for which limited parallel resources exist. The source language exhibits specifics not typical of high-density languages already studied in a similar setting. Paraphrases of a highly productive type of compound nouns in Swedish are generated by a corpus-based technique. Certain Swedish noun-phrase types are paraphrased using basic heuristics. Further we introduce noun-phrase morphological variations for better wordform coverage. We evaluate the performance of a phrase-based statistical machine translation system trained on a baseline parallel corpus and on three stages of artificial enlargement of the source-language training data. Paraphrasing is shown to have no effect on performance for the Swedish-English translation task. We show a small, yet consistent, increase in the BLEU score of Swedish-Bulgarian translations of larger token spans on the first enlargement stage. A small improvement in the overall BLEU score of Swedish-Bulgarian translation is achieved on the second enlargement stage. We find that both improvements justify further research into the method for the Swedish-Bulgarian translation task.
%U http://www.lrec-conf.org/proceedings/lrec2012/pdf/743_Paper.pdf
%P 3937-3943

Markdown (Informal)

[Expanding Parallel Resources for Medium-Density Languages for Free](http://www.lrec-conf.org/proceedings/lrec2012/pdf/743_Paper.pdf) (Iliev & Genov, LREC 2012)

• Expanding Parallel Resources for Medium-Density Languages for Free (Iliev & Genov, LREC 2012)

ACL

• Georgi Iliev and Angel Genov. 2012. Expanding Parallel Resources for Medium-Density Languages for Free. In Proceedings of the Eighth International Conference on Language Resources and Evaluation (LREC'12), pages 3937–3943, Istanbul, Turkey. European Language Resources Association (ELRA).