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Analysis of Czech Web 1T 5-Gram Corpus and Its Comparison with Czech National Corpus Data

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Part of the book series: Lecture Notes in Computer Science ((LNAI,volume 6231))

Abstract

In this paper, newly issued Czech Web 1T 5-grams corpus created by Google and LDC is analysed and compared with reference n-gram corpus obtained from Czech National Corpus. Original 5-grams from both corpora were post-processed and statistical trigram language models of various vocabulary sizes and parameters were created. The comparison of various corpus statistics such as unique and total word and n-gram counts before and after post-processing is presented and discussed, especially with the focus on clearing Web 1T data from invalid tokens. The tools from HTK Toolkit were used for the evaluation and accuracy, OOV rates and perplexity were measured using sentence transcriptions from Czech SPEECON database.

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Procházka, V., Pollák, P. (2010). Analysis of Czech Web 1T 5-Gram Corpus and Its Comparison with Czech National Corpus Data. In: Sojka, P., Horák, A., Kopeček, I., Pala, K. (eds) Text, Speech and Dialogue. TSD 2010. Lecture Notes in Computer Science(), vol 6231. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-15760-8_24

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  • DOI: https://doi.org/10.1007/978-3-642-15760-8_24

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-15759-2

  • Online ISBN: 978-3-642-15760-8

  • eBook Packages: Computer ScienceComputer Science (R0)

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