Antonin Delpeuch
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Interests
My work focuses on the computational content of deductive systems, from the perspective of graphical deduction systems.
Currently, I am exploring the geometric structure of cells in higher categories from a computational perspective. Higher categories are rich algebraic objects: ndimensional cells can be composed in n different ways, which are related via the exchange law. We still know little about the computational complexity of the resulting theory. My work focuses on the word problem for these structures, which was studied first by Makkai in 2005. I am reusing notions from lowdimensional algebra (such as rewriting systems or automatic structures) and adapt them to this higherdimensional version.
My long term goal is to apply diagrammatic reasoning to ExportTransformLoad systems such as OpenRefine. These systems have a notion of operation (atomic change in a database column) which is very well captured by symmetric monoidal theories. Modelling series of operations as morphisms in a finitely presented category is very useful, for instance to analyze data flows during the transformations, allowing to rearrange a workflow without changing its effects on the data. I am working towards implementing this in OpenRefine. Other open source projects can be found on my GitHub profile.
Pledges
 I do not submit papers to closedaccess publications. I do not review for these either. Join me by taking the pledge: No free view? No review!
 I am concerned by the climate crisis and have signed the Pledge for sustainable research in theoretical computer science. I avoid flying for this reason.
Papers
 Antonin Delpeuch, The word problem for double categories, Theory and Applications of Categories, Vol. 35, 2020, No. 1, pp 118. arXiv:1907.09927
 Antonin Delpeuch, A complete language for faceted dataflow programs, Applied Category Theory 2019, arXiv:1906.05937
 Antonin Delpeuch, Autonomization of monoidal categories, Applied Category Theory 2019, arXiv:1411.3827
 Antonin Delpeuch, A survey of OpenRefine reconciliation services, working preprint. arXiv:1906.08092
 Antonin Delpeuch and Jamie Vicary, Normal forms for planar connected string diagrams, Workshop on Higher Dimensional Rewriting and Applications, FLOC, Oxord, 7 July 2018, arXiv:1804.07832
 Antonin Delpeuch, Complexity of Grammar Induction for Quantum Types,Electronic Proceedings in Theoretical Computer Science. Vol. 172. Pages 236–248. December, 2014. DOI 10.4204/eptcs.172.16, arXiv:1404.3925
 Antonin Depleuch, Typedriven distributional semantics for prepositional phrase attachment, Master's thesis at the University of Cambridge, DOI 10.5281/zenodo.1299049
 Antonin Delpeuch and Anne Preller, From Natural Language to RDF Graphs with Pregroups, In Proceedings of the EACL 2014 Workshop on Type Theory and Natural Language Semantics (TTNLS). Pages 55–62. Gothenburg‚ Sweden. April, 2014. Association for Computational Linguistics. DOI 10.3115/v1/w141407
Talks
 Revamping OpenRefine: a reproducible data wrangler, FOSDEM'20, Open Research Tools & Technologies track, Brussels, 1 February 2020 (video)
 The reconciliation API: a protocol for online data matching, AKSW Seminar, Leipzig, 10 January 2020
 Unknotting knots in braided monoidal categories, Postgraduate Conference in Category Theory and Its Applications, University of Leicester, 1819 November 2019
 The word problem for double categories, Theory group seminar, University of Birmingham, 4 October 2019
 Décider l'égalité de diagrammes de cordes (Decidability of equality for string diagrams), Catégories supérieures, polygraphes et homotopie, IRIF, Université Paris 7, 6 April 2018
 Schema alignment for Wikibase in OpenRefine, Harnessing open data for Monitoring and Evaluation workshop, European Research Council Executive Agency, Berlin, 1719 June 2018
Events
 29th Computer Science Logic conference, reviewer
 28th Computer Science Logic conference, reviewer
 5th Symposium on Compositional Structures and 3rd Workshop on String Diagrams in Computation, Logic and Physics, PC member
 3rd Symposium on Compositional Structures, PC member and local organizer
 14th International Workshop on Coalgebraic Methods in Computer Science, reviewer
 1st Symposium on Compositional Structures, reviewer
Biography
I started my DPhil in October 2016, under the supervision of Jamie Vicary.
Before that, I studied at École Normale Supérieure, in Paris. For my masters degree in mathematical logic and foundations of computer science, I took a research placement at the University of Ljubljana where I worked with Alex Simpson on algorithmic randomness and pointfree topology.
Selected Publications

The Word Problem for Double Categories
Antonin Delpeuch
In arXiv:1907.09927 [cs‚ math]. July, 2019.
Details about The Word Problem for Double Categories  BibTeX data for The Word Problem for Double Categories

Autonomization of Monoidal Categories
Antonin Delpeuch
In Proceedings of Applied Category Theory 2019. July, 2019.
Details about Autonomization of Monoidal Categories  BibTeX data for Autonomization of Monoidal Categories

A Complete Language for Faceted Dataflow Programs
Antonin Delpeuch
In arXiv:1906.05937 [Cs‚ Math]. Oxford. June, 2019.
Details about A Complete Language for Faceted Dataflow Programs  BibTeX data for A Complete Language for Faceted Dataflow Programs