12th Workshop on the Challenges in the Management of Large Corpora The next meeting of CMLC (see also  http://corpora.ids-mannheim.de/cmlc.html%C2%A0) will be held as part of the LREC-2026 conference [3] in Palma, Mallorca.  3rd Call for Papers and deadline extensionImportant dates * Deadline for paper submission: the 16th 25th of February 2026 (Monday, 23:59 UTC) * Notification of acceptance: the 12th of March 2026 (Thursday) * Deadline for the submission of camera-ready papers: the 30th of March 2026 (Monday) * Meeting: the 11th of May, morning slot Paper submission * We invite anonymised extended abstracts for oral presentations on the topics listed above, as PDF created according to LREC-2026 templates [1]. Length and content: 4 to 8 pages in length, excluding acknowledgements, references, potential Ethics Statements and discussion on Limitations. Appendices or supplementary material are not permitted during the initial submission phase, as papers should be self-contained and reviewable on their own. However, appendices and supplementary material will be allowed in the final, camera-ready version of the paper. * CMLC has always reserved a track for national corpus project reports, and to this end, we invite poster proposals of 500-750 words. National project reports need not be anonymised. * Submissions are accepted solely through the LREC START system [2]. * A volume of proceedings will be published online by ELRA. Oral and poster contributions will have equal status. Workshop description As in the previous CMLC meetings, we wish to explore common areas of interest across a range of issues in language resource management, corpus linguistics, natural language processing, natural language generation, and data science. Large textual datasets require careful design, collection, cleaning, encoding, annotation, storage, retrieval, and curation to be of use for a wide range of research questions and to users across a number of disciplines. A growing number of national and other very large corpora are being made available, many historical archives are being digitised, numerous publishing houses are opening their textual assets for text mining, and many billions of words can be quickly sourced from the web and online social media. A mixed blessing of the times is that much of those texts, in mono- and multi-lingual arrangements can now be created automatically by exploiting Large Language Models at various scales. That, on the one hand, makes it possible to inflate the amounts of data where normally data would be scarce: in under-resourced languages or language varieties, in specific genres or for intricate and rarely attested constructions. On the other hand, such procedures immediately raise concerns regarding the authenticity and quality of such data, casting doubt on the possibility of adequately (truthfully, verifiably, reproducibly) addressing the kind of research questions that provoked the rapid but tainted increase of the available data volumes in the first place. Similar doubts may be directed at mass creation of secondary and tertiary data ordinarily crucial for linguistic research: apart from potential legal constraints on the use of the initial amounts of human-created data, new questions arise as to the legal status of the derived data, the ways to create e.g. provenance metadata of the derived resources, and the level of trust regarding mass-produced grammatical (and other) annotation layers. These new as well as more traditional questions lie at the base of the list of topics that management of large corpora (for any currently suitable definition of “large”) invokes or at least strongly brushes against. Topics of interest This year's event adds new items to the standard range of CMLC themes and addresses some of LREC-2026 focus topics: * Interoperability and accessibility How to make corpora as accessible as possibleInteroperable APIs for query and analysis softwareProvision of multiple levels of access for different tasks * Machine/Deep Learning Data preparation for machine learning inputCreation, curation, maintenance and dissemination of language models based on machine learning (e.g. word embeddings and entire deep learning networks)Legal issues concerning language model distribution * Linguistic content challenges Dealing with the variety of language: multilinguality, minority and/or underrepresented languages, historical texts, noisy OCR texts, user-generated content, etc.Diversity and inclusion in language resourcesIntegration of human computation (crowdsourcing) and automatic annotationQuality management of annotationsEnsuring linguistic integrity of data through deduplication, correction of typos and errors, removal of incomplete or malformed sentences, and filtering harmful, offensive and toxic content, etc.Integrating different linguistic data types (text, audio, video, facsimiles, experimental data, neuroimaging data, …) * Technical challenges Storage and retrieval solutions for large text corpora: primary data (potentially including facsimiles, etc.), metadata, and annotation dataCorpus versioning and release managementScalable and efficient NLP tooling for annotating and analysing large datasets: distributed and GPGPU computing; using big data analysis frameworks for language processingDealing with streaming data (e.g. Social Media) and rapidly changing corporaEnvironmental impact of big language data computingEngineering and management of research software * Exploitation challenges Legal and privacy issuesQuery languages, data models, and standardisationLicensing models of open and closed data, coping with intellectual property restrictionsInnovative approaches for aggregation and visualisation of text analyticsRepurposing or extending application areas of existing corpora and tools National corpus initiatives In the tradition of CMLC, we invite reports on national corpus initiatives; submitters of these reports should be prepared to present a poster. Given that it's been a while since the last round, we would be happy to have a little "What's the news?" session, and we cordially invite both our veteran presenters as well as colleagues who have not yet introduced their national corpus projects, Our poster sessions are usually scheduled to overlap with the coffee break, to ensure informal atmosphere and to maximally use the time slot available to us. A flash presentation section is plan for just before the poster session: ca. 3 minutes for the highlights. LRE 2026 Map and the "Share your LRs!" initiative When submitting a paper from the START page, authors will be asked to provide essential information about resources (in a broad sense, i.e. also technologies, standards, evaluation kits, etc.) that have been used for the work described in the paper or are a new result of your research. Moreover, ELRA encourages all LREC authors to share the described LRs (data, tools, services, etc.) to enable their reuse and replicability of experiments (including evaluation ones). Programme Committee * Laurence Anthony (Waseda University, Japan) * Vladimír Benko (Slovak Academy of Sciences) * Felix Bildhauer (IDS Mannheim) * Mark Davies (English-Corpora.org) * Nils Diewald (IDS Mannheim) * Kaja Dobrovoljc (University of Ljubljana / Jožef Stefan Institute) * Jarle Ebeling (University of Oslo) * Tomaž Erjavec (Jožef Stefan Institute, Ljubljana) * Andrew Hardie (Lancaster University, UK) * Serge Heiden (ENS de Lyon) * Ulrich Heid (University of Hildesheim) * Nancy Ide (Vassar College / Brandeis University) * Olha Kanishcheva (Heidelberg University) * Gražina Korvel (Vilnius University) * Natalia Kocyba (Samsung Poland) * Michal Křen (Charles University, Prague) * Anna Latusek (ICS PAS, Warsaw) * Paul Rayson (Lancaster University) * Laurent Romary (INRIA) * Thomas Schmidt (University of Duisburg-Essen) * Serge Sharoff (University of Leeds) * Maria Shvedova (Kharkiv Polytechnic Institute / University of Jena) * Irena Spasić (Cardiff University) * Martin Wynne (University of Oxford) Organising Committee * 📩 Piotr Bański (IDS Mannheim) * 📩 Dawn Knight (Cardiff University) * 📩 Marc Kupietz (IDS Mannheim) * 📩 Andreas Witt (IDS Mannheim) * 📩 Alina Wróblewska (ICS PAS, Warsaw)

[1] LREC-2026 templates https://lrec2026.info/authors-kit/ [2] LREC START system https://softconf.com/lrec2026/CMLC2026/ [3] LREC-2026 conference https://lrec2026.info/