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ape-task.html
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<HTML>
<HEAD>
<title>Automatic Post-Editing Task - ACL 2016 First Conference on Machine Translation</title>
<style> h3 { margin-top: 2em; } </style>
</HEAD>
<body>
<center>
<script src="title.js"></script>
<p><h2>Shared Task: Automatic Post-Editing</h2></p>
<script src="menu.js"></script>
</center>
<H3>OVERVIEW</H3>
<p> The second round of the APE shared task follows the first pilot round organised in 2015. The aim is to examine <b> automatic methods for correcting errors produced by an unknown machine translation (MT) system.</b> This has to be done by exploiting knowledge acquired from human post-edits, which are provided as training material.</p>
<H3>Goals</H3>
<p>
The aim of this task is to improve MT output in black-box scenarios, in which the MT system is used "as is" and cannot be modified. From the application point of view APE components would make it possible to:
<UL>
<LI>Cope with systematic errors of an MT system whose decoding process is not accessible</LI>
<LI>Provide professional translators with improved MT output quality to reduce (human) post-editing effort</LI>
<LI>Adapt the output of a general-purpose system to the lexicon/style requested in a specific application domain</LI>
</UL>
</p>
<H3>Task Description</H3>
<p>
This year the task focuses on the Information Technology (IT) domain, in which English source sentences have been translated into German by an unknown MT system and then manually post-edited by professional translators.</p>
<p>At training stage, the collected human post-edits have to be used to learn correction rules for the APE systems. At test stage they will be used for system evaluation with automatic metrics (TER and BLEU).
</p>
<H3>Data</H3>
<p>
Training, development and test data (the same used for the Sentence-level Quality Estimation task) consist in English-German triplets (source, target and post-edit) belonging to the IT domain and <b>already tokenized.</b></p>
<p>Training and development respectively contain 12,000 and 1,000 triplets, while the test set 2,000 instances. All data is provided by the EU project QT21 (<a href="http://www.qt21.eu/" target="_blank">http://www.qt21.eu/</a>).</p>
<p><b>NOTE:</b> Any use of additional data for training your system is allowed (e.g. parallel corpora, post-edited corpora).</p>
<H3>Evaluation</H3>
<p>Systems' performance will be evaluated with respect to their capability to reduce the distance that separates an automatic translation from its human-revised version.</p>
<p>Such distance will be measured in terms of TER, which will be computed between automatic and human post-edits in <b>case-sensitive mode.</b></p>
<p>Also BLEU will be taken into consideration as a secondary evaluation metric. To gain further insights on final output quality, a subset of the outputs of the submitted systems will also be manually evaluated.</p>
<p>The submitted runs will be ranked based on the average HTER calculated on the test set by using the <a href="http://www.cs.umd.edu/~snover/tercom/" target="_blank">tercom</a> software.</p>
<p>The HTER calculated between the raw MT output and human post-editions in the test set will be used as baseline (<i>i.e.</i> the baseline is a system that leaves all the test instances unmodified).</p>
<H3>Download Links</H3>
<p><a href="http://hdl.handle.net/11372/LRT-1632" target="_blank">Training and development data</a></p>
<p><a href="" target="">Test data (will be released on April 18, 2016)</a></p>
<p><a href="https://www.dropbox.com/s/5jw5maariwey080/Evaluation_Script.tar.gz?dl=0" target="_blank">Evaluation script</a></p>
<H3>DIFFERENCES FROM THE FIRST PILOT ROUND</H3>
<p>
Compared to the the pilot round, the main differences are:
<UL>
<LI>the domain specificity (from news to IT);</LI>
<LI>the target language (from Spanish to German);</LI>
<LI>the post-editors (from crowdsourced workers to professional translators);</LI>
<LI>the evaluation metrics (from case-sensitive/insensitive TER to case-sensitive TER and BLEU);</LI>
<LI>the performance analysis (from automatic metrics to automatic metrics plus manual evaluation).</LI>
</UL>
</p>
<H3>Submission Format</H3>
<p>
The output of your system should produce automatic post-editions of the target sentences in the test in the following way:
<pre>
<b><METHOD NAME> <SEGMENT NUMBER> <APE SEGMENT></b>
</pre>
</p>
Where:
<ul>
<li><code><b>METHOD NAME</b></code> is the name of your automatic post-editing method.</li>
<li><code><b>SEGMENT NUMBER</b></code> is the line number of the plain text target file you are post-editing.</li>
<li><code><b>APE SEGMENT</b></code> is the automatic post-edition for the particular segment.</li>
</ul>
Each field should be delimited by a single tab character.
</p>
<H3>Submission Requirements</H3>
<p>Each participating team can submit at most 3 systems, but they have to explicitly indicate which of them represents their <i>primary</i> submission. In the case that none of the runs is marked as primary, the latest submission received will be used as the primary submission.</p>
<p>Submissions should be sent via email to <font color="red"><a href="mailto:wmt-ape-submission@fbk.eu">wmt-ape-submission@fbk.eu</a></font>. Please use the following pattern to name your files:</p>
<p><code><b>INSTITUTION-NAME_METHOD-NAME_SUBTYPE</b></code>, where:</p>
<p><code><b>INSTITUTION-NAME</b></code> is an acronym/short name for your institution, e.g. "UniXY"</p>
<p><code><b>METHOD-NAME</b></code> is an identifier for your method, e.g. "pt_1_pruned"</p>
<p><code><b>SUBTYPE</b></code> indicates whether the submission is primary or contrastive with the two alternative values: <code>PRIMARY</code>, <code>CONTRASTIVE</code>.</p>
<p>You are also invited to submit a short paper (4 to 6 pages) to WMT describing your APE method(s). You are not required to submit a paper if you do not want to. In that case, we ask you to give an appropriate reference describing your method(s) that we can cite in the WMT overview paper.</p>
<h3>Important dates</h3>
<table>
<tr><td>Release of training data </td><td>February 19, 2016</td></tr>
<tr><td>Test set distributed </td><td>April 18, 2016</td></tr>
<tr><td>Submission deadline </td><td>April 24, 2016</td></tr>
<tr><td>Paper submission deadline</td><td>May 8, 2016</td></tr>
<tr><td>Manual evaluation</td><td>May 2016</td></tr>
<tr><td>Notification of acceptance</td><td>June 5, 2016</td></tr>
<tr><td>Camera-ready deadline</td><td>June 22, 2016</td></tr>
</table>
<h3>Organisers</h3>
Rajen Chatterjee (Fondazione Bruno Kessler)
<br>
Matteo Negri (Fondazione Bruno Kessler)
<br>
Raphael Rubino (Saarland University)
<br>
Marco Turchi (Fondazione Bruno Kessler)
<br>
Marcos Zampieri (Saarland University)
<h3>Contact</h3>
<p>For any information or question on the task, please send an email to:<a href="mailto:wmt-ape@fbk.eu">wmt-ape@fbk.eu</a>.<br>
To be always updated about this year's edition of the APE task, you can also join the <a href="http://groups.google.com/a/fbk.eu/group/wmt-ape/" target="_blank">wmt-ape group</a>.</p>
<p align="right">
Supported by the European Commission under the QT21
<a href="http://www.qt21.eu/"><img align=right src="figures/qt21.png" border=0 width=100 height=40></a>
<br>project (grant number 645452) <p>
</HTML>