Last week took place the kick off meeting of the third CEF funded Action aiming at improving and expanding the parallel corpora developed in two previous actions (ParaCrawl-1-Action no 2016-EU-IA-0114 and ParaCrawl-2-Action no 2017-EU-IA-0178). These previous Actions have already resulted in the release of the largest ever publicly available parallel corpora, for all EU/EEA official languages paired with English, as well as a complete end-to-end crawling and extraction open-source software toolkit.

ParaCrawl 3 will offer improved extraction software capable of efficiently processing an even larger portion of the Web (more than 1 compressed petabyte). At the same time, it will apply state-of-the-art neural methods to the detection of parallel sentences, and the processing of the extracted corpora. Special emphasis will be placed on collecting larger corpora for language pairs that are currently under-resourced. The corpora will be made more useful for training machine translation (MT) systems by post-processing the data to split long sentences, repair broken sentences and synthesise new sentences.

The new corpus releases will be made available via a data portal which will allow the users building the machine translation systems to select the types of text which best fit their purpose.

Keep posted!

Friday, 13 September 2019 09:58

ParaCrawl corpus release 5

The fifth version of the ParaCrawl corpus has been released. It is the first release under the ParaCrawl action: "Broader Web-Scale Provision of Parallel Corpora for European Languages". The latest release of the corpora contains newly crawled data, including data from Internet Archive. Enhancements in document and sentence aligners with updated BiCleaner strategy resulted in corpora twice the size compare to release v4 for all the official EU languages (23 languages paired with English).

Corpora sizes and download links are available from ParaCrawl's website (https://paracrawl.eu/releases.html).

Following chart shows an overview of the corpora sizes in terms of English word counts:

The latest release of the ParaCrawl OpenSource Pipeline (Bitextor) is available on Github.

The ParaCrawl efforts will continue with the Broader Web-Scale Provision of Parallel Corpora for European Languages; focusing on more language pairs, ingesting more file formats beyond HTML, expanding the crawl coverage and applying domain filtering. Stay tuned for more news and follow us on twitter @ParaCrawl.

The corpus and software are released as part of the ParaCrawl project co-financed by the European Union through the Connecting Europe Facility (CEF). This release used an existing toolchain that will be refined throughout the project and expanded to cover all official EU languages (23 languages parallel with English).

The corpora are released under the Creative Commons CC0 license ("no rights reserved"). (https://creativecommons.org/share-your-work/public-domain/cc0/)

 

Monday, 01 April 2019 00:00

ParaCrawl works!

NMT experiments are performed for various language pairs, comparing models trained on WMT data with and without the addition of ParaCrawl released corpora. Shallow NMT models, trained with Marian, are used for these experiments. The following table shows that almost in all cases, except for en-cs, addition of ParaCrawl data significantly improves the BLEU scores. The ParaCrawl pipeline has significantly improved since the release 1 and that reflects in the following results as the v4 of the ParaCrawl data is much cleaner, the improvement in BLEU scores is much more evident. 

 

Pair Direction BLEU
(WMT)
BLEU
(ParaCrawl v1)
BLEU
(ParaCrawl v4)
Finnish-English en-fi 17.5 17.5 18.7
fi-en 21.7 24.2 26.3
Latvian-English en-lv 13.2 13.9 15.1
lv-en 15.6 16.5 18.1
Romanian-English en-ro 25.9 26.5 27.2
ro-en 31.1 33.5 35.1
Czech-English en-cs 20.5 19.1 20.4
cs-en 25.7 26.3 26.8
German-English en-de 24.0 20.8 25.2
de-en 29.8 28.8 32.9
Thursday, 14 March 2019 00:00

ParaCrawl corpus release v4.0

The fourth version of the ParaCrawl corpus has been released. It is the final release for the first ParaCrawl project, Provision of Web-Scale Parallel Corpora for Official European Languages, contains parallel corpora for 23 European languages paired with English. The latest release of the corpora brings cutting-edge improvements to the processing pipeline, mainly focusing on getting high-quality bilingual sentences. To that end, extensive cleaning techniques have been applied such as character-based language model filtering or safe restorative cleaning.

Corpora sizes and download links are available from ParaCrawl's website (http://paracrawl.eu/releases.html).
ParaCrawl corpus is hosted by Registry of Open Data on AWS.

The source code of the ParaCrawl OpenSource Pipeline (Bitextor) is available on Github.

The ParaCrawl efforts will continue with the second iteration, Broader Web-Scale Provision of Parallel Corpora for European Languages; focusing on more language pairs, ingesting more file formats beyond HTML, expanding the crawl coverage and applying domain filtering. Stay tuned for more news and follow us on twitter @ParaCrawl.

The corpus and software are released as part of the ParaCrawl project co-financed by the European Union through the Connecting Europe Facility (CEF). This release used an existing toolchain that will be refined throughout the project and expanded to cover all official EU languages (23 languages parallel with English).

The corpora are released under the Creative Commons CC0 license ("no rights reserved"). (https://creativecommons.org/share-your-work/public-domain/cc0/)

This registry exists to help people discover and share datasets that are available via AWS resources. Learn more about sharing data on AWS.

Monday, 19 November 2018 00:00

ParaCrawl corpus release v3.0

The thrid version of the ParaCrawl corpus has been released. It contains parallel corpora for 23 languages paired with English. 6 new languages are added to the v3 release namely Bulgarian, Danish, Greek, Slovak, Slovenian and Swedish. For the previously released languages more data is added to the corpus. For each language two different versions of corpus are released based on two cleaning tools, i.e. BiCleaner and Zipporah. ParaCrawl corpus is crawled from a large number of web sites. The selection of websites is based on CommonCrawl, but ParaCrawl is extracted from a brand new crawl which has much higher coverage of these selected websites than CommonCrawl.

Corpus size and download links are available from ParaCrawl's website (http://paracrawl.eu/releases.html). The corpus will soon be uploaded to other public data repositories as well.

The source code of the ParaCrawl OpenSource Pipeline (Bitextor) is also available on Github.

The corpus and software are released as part of the ParaCrawl project co-financed by the European Union through the Connecting Europe Facility (CEF). This release used an existing toolchain that will be refined throughout the project and expanded to cover all official EU languages (23 languages parallel with English). Next release is scheduled for March 2019.

The corpora are released under the Creative Commons CC0 license ("no rights reserved"). (https://creativecommons.org/share-your-work/public-domain/cc0/)

Thursday, 27 September 2018 00:00

ParaCrawl corpus release v2.0

The second version of the ParaCrawl corpus has been released. It contains parallel corpora for 17 languages paired with English. 6 new languages are added to the v2 release namely Irish, Croatian, Maltese, Lithuanian, Hungarian and Estonian. For the previously released languages (German, French, Spanish, Italian, Portuguese, Dutch, Polish, Czech, Romanian and Finnish) more data is added to the corpus. For each language two different versions of corpus are released based on two cleaning tools, i.e. BiCleaner and Zipporah. ParaCrawl corpus is crawled from a large number of web sites. The selection of websites is based on CommonCrawl, but ParaCrawl is extracted from a brand new crawl which has much higher coverage of these selected websites than CommonCrawl.

Corpus size and download links are available from ParaCrawl's website (http://paracrawl.eu/releases.html). The corpus will soon be uploaded to other public data repositories as well.

The source code of the ParaCrawl OpenSource Pipeline (Bitextor) is also available on Github.

The corpus and software are released as part of the ParaCrawl project co-financed by the European Union through the Connecting Europe Facility (CEF). This release used an existing toolchain that will be refined throughout the project and expanded to cover all official EU languages (23 languages parallel with English). Updated releases are scheduled for June 2018, October 2018, and March 2019.

The corpora are released under the Creative Commons CC0 license ("no rights reserved"). (https://creativecommons.org/share-your-work/public-domain/cc0/)

Wednesday, 07 March 2018 00:00

Meet ParaCrawl at AMTA Technology Forum!

Prompsit, one of our partners, will attend and exhibit on behalf of ParaCrawl at the next AMTA Conference in Boston (17-21 March 2018). The exhibition is part of the Technology Forum organised inside the AMTA Conference which will take place on 18th March 2018 from 12:30 to 17:30.

By visiting us at AMTA’s Technology Forum:

  • you will learn more about the 11 parallel corpora that we already released
  • you will see a live demo of some the tools that we will soon release: Bicleaner, a web-based TMX cleaner and KEOPS, an evaluation toolkit for parallel sentences.

Come a visit us at AMTA’s Technology Forum for free!
If you are coming only for the Technology Forum, you just need to select Complimentary Registration on the AMTA registration site.

Sunday, 14 January 2018 00:00

1st corpus release for ParaCrawl

The first version of the ParaCrawl corpus has been released. It contains parallel corpora for 11 languages paired with English, namely German, French, Spanish, Italian, Portuguese, Dutch, Polish, Czech, Romanian, Finnish and Latvian, crawled from a large number of web sites. The selection of websites is based on CommonCrawl, but ParaCrawl is extracted from a brand new crawl which has much higher coverage of these selected websites than CommonCrawl.

Corpus size, BLEU score evaluations and download links are available from ParaCrawl's website (http://paracrawl.eu/releases.html). The corpus will soon be uploaded to other public data repositories as well.

The corpus is released as part of the ParaCrawl project co-financed by the European Union through the Connecting Europe Facility (CEF). This release used an existing toolchain that will be refined throughout the project and expanded to cover all official EU languages (23 languages parallel with English). Updated releases are scheduled for June 2018, October 2018, and March 2019.

The corpora are released under the Creative Commons CC0 license ("no rights reserved"). (https://creativecommons.org/share-your-work/public-domain/cc0/)