10th Web as Corpus Workshop (WAC-X)

Endorsed by the Special Interest Group of the ACL on Web as Corpus (SIGWAC)

Co-located with ACL 2016
August 12, 2016, Berlin

Location: Humboldt University, Berlin
Room: 2093 (Please see the ACL 2016 homepage for details.)


The proceedings of WAC-X and the EmpiriST shared task are available in the ACL anthology. Slides are linked in the program below.


WAC-X morning session
9:30–9:40 Welcome and Introduction
9:40–10:00 Roland Schäfer and Felix Bildhauer
Automatic Classification by Topic Domain for Meta Data Generation, Web Corpus Evaluation, and Corpus Comparison (Slides)
10:00–10:30 Adrien Barbaresi
Efficient construction of metadata-enhanced web corpora (Slides)
WAC-X noon session
11:00–11:30 Andrew Salway, Dag Elgesem, Knut Hofland, Øystein Reigem and Lubos Steskal
Topically-focused Blog Corpora for Multiple Languages (Slides)
11:30–12:00 Anne Krause
The Challenges and Joys of Analysing Ongoing Language Change in Web-based Corpora: a Case Study (Slides)
12:00–12:30 Quirin Würschinger, Mohammad Fazleh Elahi, Desislava Zhekova and Hans-Jörg Schmid
Using the Web and Social Media as Corpora for Monitoring the Spread of Neologisms. The case of ’rapefugee’, ’rapeugee’, and ’rapugee’. (Slides)
EmpiriST session
13:30–13:50 Michael Beißwenger, Sabine Bartsch, Stefan Evert and Kay-Michael Würzner
EmpiriST 2015: A Shared Task on the Automatic Linguistic Annotation of Computer-Mediated Communication and Web Corpora (Slides)
13:50–14:10 Thomas Proisl and Peter Uhrig
SoMaJo: State-of-the-art tokenization for German web and social media texts (Slides)
14:10–14:30 Jakob Prange, Andrea Horbach and Stefan Thater
UdS-(retrain|distributional|surface): Improving POS Tagging for OOV Words in German CMC and Web Data (Slides)
WAC-X and EmpiriST teaser talks
14:30–14:35 Gideon Mendels, Erica Cooper and Julia Hirschberg
Babler - Data Collection from the Web to Support Speech Recognition and Keyword Search
14:35–14:40 Nikola Ljubešić and Darja Fišer
A Global Analysis of Emoji Usage (Slides)
14:40–14:45 Erika Dalan and Serge Sharoff
Genre classification for a corpus of academic webpages (Slides)
14:45–14:50 Roland Schäfer
On Bias-free Crawling and Representative Web Corpora (Poster)
14:55–15:00 Steffen Remus, Gerold Hintz, Chris Biemann, Christian M. Meyer, Darina Benikova, Judith Eckle-Kohler, Margot Mieskes and Thomas Arnold
EmpiriST: AIPHES - Robust Tokenization and POS-Tagging for Different Genres (Slides)
15:00–15:05 Egon Stemle
bot.zen @ EmpiriST 2015 - A minimally-deep learning PoS-tagger (trained for German CMC and Web data)
15:05–15:10 Tobias Horsmann and Torsten Zesch
LTL-UDE @ EmpiriST 2015: Tokenization and PoS Tagging of Social Media Text (Slides)
Posters and discussions
15:10–16:30 WAC-X and EmpiriST poster session
16:30–17:30 WAC-X and EmpiriST closing discussion
17:30–18:30 Panel discussion Corpora, open science, and copyright reforms CANCELLED

WAC-X main workshop

The World Wide Web has become increasingly popular as a source of linguistic data, not only within the NLP communities, but also with theoretical linguists facing problems of data sparseness or data diversity. Accordingly, web corpora continue to gain importance, given their size and diversity in terms of genres/text types. The field is still new, though, and a number of issues in web corpus construction need much additional research, both fundamental and applied. These issues range from questions of corpus design (e.g., assessment of corpus composition, sampling strategies and their relation to crawling algorithms, and handling of duplicated material) to more technical aspects (e.g., efficient implementation of individual post-processing steps in document cleaning and linguistic annotation, or large-scale parallelization to achieve web-scale corpus construction). Similarly, the systematic evaluation of web corpora, for example in the form of task-based comparisons to traditional corpora, has only recently shifted into focus. For almost a decade, the ACL SIGWAC (, and especially the highly successful Web as Corpus (WAC) workshops have served as a platform for researchers interested in compilation, processing and application of web-derived corpora. Past workshops were co-located with major conferences on computational linguistics and/or corpus linguistics (such as EACL, NAACL, LREC, WWW, and Corpus Linguistics).

WAC-X will also feature the final workshop of the EmpiriST 2015 shared task "Automatic Linguistic Annotation of Computer-Mediated Communication / Social Media" (see for details) and the panel discussion "Corpora, open science, and copyright reforms" (see for details).


Program committee

The workshop organizers were not part of the program committee.

  • Adrien Barbaresi, ÖAW (AT)
  • Silvia Bernardini, University of Bologna (IT)
  • Douglas Biber, Northern Arizona University (US)
  • Felix Bildhauer, Institut für Deutsche Sprache Mannheim (DE)
  • Katrien Depuydt, INL, Leiden (NL)
  • Jesse de Does, INL, Leiden (NL)
  • Cédrick Fairon, UC Louvain (BE)
  • William H. Fletcher, U.S. Naval Academy (US)
  • Iztok Kosem, Trojina, Institute for Applied Slovene Studies (SI)
  • Simon Krek, Jožef Stefan Institute (SI)
  • Lothar Lemnitzer, BBAW (DE)
  • Nikola Ljubešić, Sveučilišta u Zagrebu (HR)
  • Siva Reddy, University of Edinburgh (UK)
  • Steffen Remus, TU Darmstadt (DE)
  • Pavel Rychly, Masaryk University (CZ)
  • Kevin Scannell, Saint Louis University (US)
  • Serge Sharoff, University of Leeds (UK)
  • Klaus Schulz, LMU München (DE)
  • Kay-Michael Würzner, BBAW (DE)
  • Torsten Zesch, University of Duisburg-Essen (DE)
  • Pierre Zweigenbaum, LIMSI (FR)

EmpiriST 2015 shared task

The EmpiriST 2015 shared task aims to encourage the developers of NLP applications to adapt their tools and resources to the processing of German discourse in genres of computer-mediated communica­tion (CMC), including both dialogical (chat, SMS, social networks, etc.) and monological (web pages, blogs, etc.) texts. Since there has been relatively little work in this area for German so far, the shared task focuses on tokenization and part-of-speech tagging as the core annotation steps required by virtu­ally all NLP applications. While we have a particular interest in robust tools that can be applied to dia­logical CMC and web corpora alike, participants are allowed to use different systems for the two sub­sets or submit results for one subset only. A substantial number of teams from German-speaking countries have already expressed their interest to participate in EmpiriST 2015. Knowledge of German is not essential for participation, though, since there are sufficient amounts of manually annotated training data (at least 10,000 tokens) and key docu­ments are provided in English.

The final workshop of EmpiriST 2015 will be co-located with WAC-X. It will include a detailed pre­sentation of the task and results, a poster session with all participating systems, oral presentations of se­lected systems, and a plenary discussion about the challenges of CMC in general as well as German CMC genres in particular.

Last modified 8 years ago Last modified on 09/30/16 20:26:35

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