About me

I am an Associate Professor (Reader) in the PPLV group of Department of Computer Science, University College London.

PPLV webpage:

Contact: m.sadrzadeh@ucl.ac.uk

From 2013 to 2019, I was based in the School of Electronic Engineering and Computer Science, Queen Mary University of London. From 2008-2013, I was first an EPSRC Post Doctoral Fellow, then an EPSRC Career Acceleration Fellow and a Research Fellow of Wolfson College, at the CS Department, University of Oxford.

I held two Royal Academy of Engineering Industrial Scheme Fellowships, Jan 2017-2018 and Sept 2019-2020.

My research is focused on developing compositional logical and mathematical models of natural language, developing vector/tensor space semantics, learning the model parameters via machine learning, automating the syntactic reasoning via proof theory and algebra, applying the results to academic and industrial tasks.

Topics of Interest: Compositional Distributional Semantics, Category Theoretical Models of Natural Language, Pregroup Grammars, Vector Space Models, Dynamic Epistemic Logic, Algebra, Coalgebra, Proof Theory.


February 2021: The call for nominations for the E.W. Beth Outstanding Dissertation Prize is out, see here, hope to see your nominations.

February 2021: SemSpace 2021 is happening as a workshop of IWCS. See here for a description and the call for papers.

Jan 2021: Our paper on multimodal content similarity and cosines finally appeared on the IEEE website, see here.

Jan 20201: Together with Alexandra Silva and Renato Neves, we are organising a logic@UCL event for the UNESCO World Logic Day on January 14th. Our event is called Logical Journeys, and is accessible here. The event was recorded on the Conseil International de Philosophie et des Sciences Humaines (CIPSH) website, see here.

Dec 2020: Our paper “Incremental Composition in Distributional Semantics” will soon appear in JoLLI, but can be downloaded from here too. It has been a joint collaboration with M. Purver, R. Kempson, G. Wijnholds, and J. Hough.

Dec 2020: Saba Nazir is going to present our paper “Audiovisual, Genre, Neural and Topical Textual Embeddings for TV Programme Content Representation”, in the 22nd IEEE ISM conference Dec 2-4. The complete list of authors is Saba Nazir, Taner Cagali, Chris Newell, Mehrnoosh Sadrzadeh.

Nov 2020: Our CoNLL paper “Representation Learning for Type-Driven Composition”, joint with Gijs Wijnholds and Steve Clark, is going to be presented next week (19-20 Nov) by Gijs.

Nov 2020: I gave a talk in the LIRA seminar series at ILLC on Linguistic Matrix Theory.

Nov 2020: Lewis Sword and Sanjaye Ramgoolam, from Centre for String Theory QMUL, presented joint work on Linguistic Matrix Theory and Gaussianity and typicality in natural language data explained our GitHub code, accessible from here, as a Zoom webinar. The code can be used to compute the degree of Gaussianity of any ensemble of matrix data in a permutation invariant setting. A range of people from different industries attended the webinar. The funding for this project was provided by an SFTC/EPSRC IAA grant during summer 2020.

October 2020: In conjunction with BCS and IBM, we organised the 14th London Hopper colloquium as a webinar on the GoToMeeting system of BCS. We had 4 guest speakers from academia and industry and 12 PhD/MSc students won a place in our Spotlight competition to present their research. For the awardees of the Spotlight competition and an overview see here.

August 2020: Our paper Derivations and Vector Semantics of Anaphora with Ellipsis in Lambek Calculus with a Relevant Modality was presented in SemSpace2020 by Lachlan McPheat. The full list of authors: Lachlan McPheat, Mehrnoosh Sadrzadeh, Adriana Correia, Alexis Toumi.

July 2020: Lachlan McPheat presented our Keynote paper “Categorical Vector Space Semantics for Lambek Calculus with a Relevant Modality”, in Applied Category Theory Conference. Authors:L. McPheat, M. Sadrzadeh, H. Wazni, G. Wijnholds. The longer version is accessible from here.

July 2020: Saba Nazir presented joint paper “Cosine Similarity of Multimodal Content Vectors for TV Programmes” as a poster in the ML4MD workshop of ICML 2020. The authors were Saba Nazir, Taner Cagali, Chris Newell and Mehrnoosh Sadrzadeh.

May 2020: Our paper “A Frobenius Algebraic Analysis for Parasitic Gaps”, joint work with Moortgat and Wijnholds, is now on the arXiv, see here. An earlier short version of the paper was presented last year in the SemSpace2019 workshop of ESSLLI in Riga.

May 2020: Our paper “Gaussianity and typicality in matrix distributional semantics”, joint work with Ramgoolam and Sword from String Theory in QMUL, see here, has been accepted for presentation in the 17th International Conference on  Quantum Physics and Logic 2020, to happen online from Paris-Saclay, France, in June 2020.

May 2020: Our paper “Fuzzy Generalised Quantifiers for Natural Language in Categorical Compositional Distributional Semantics”, dedicated to my MSc thesis advisor, Prof. M. Ardeshir, will soon appear in the Springer Outstanding Contributions to Logic volume: Mathematics, Logic, and Their Philosophies: Essays in Honour of Mohammad Ardeshir, edited by Zareour, Rahman, Mojtahedi. It is joint work with Mǎtej Dostál and Gijs Wijnholds.

April 2020: Our paper “A toy distributional model for fuzzy generalised quantifiers”, joint work with Gijs Wijnholds, was accepted for presentation and publication in the Probability and Meaning (PaM) conference, to happen in October 2020, in Gothenburg.

Feb 2020: Our paper “Gaussianity and typicality in matrix distributional semantics”, joint work with Ramgoolam and Sword from String Theory in QMUL, is on the arXiv: see here.

25th of January 2020: FoLLI’s call for nominations for the Beth Outstanding Dissertation Prize is out, click here for details of the call and submission criteria. Do consider submitting or encourage known students to do so. The deadline is 15th of April 2020.

9-13th of December 2019: Together with Samson Abramsky and Alessandra Palmigiano we organised a Lorentz Centre workshop on Logic and Structures in Computer Science and Beyond, see here for the programme and description. We had a very nice combination of long and short impromptu talks, as well as very fruitful discussion and breakout sessions. I learnt quite a lot about contextually and Fock spaces.

On 10th of December, I gave the Lunchtime lecture for the Lorentz Centre’s Faculty of Science “This weeks discovery”, with title “Understanding natural language: logic or statistics, which one is more important?”.

16th of September 2019: I gave a talk in the Theoretical Neurobiology research group of the centre for Human NeuroImaging. The title of the talk was “Convergence in Dialogue via Incremental Vector Representations” and the material was based on our SemDial 2018 paper with Matt Purver, Ruth Kempson, and Julian Hough. Based on some recent joint work, I argued that a principle similar to the principle of free energy used by Prof. Karl Friston in the brain, can be applied to linguistic data exchanged by humans to achieve a degree of synchrony in dialogue, by measuring the decreasing rate of the distances between utterances vectors of the dialogue.

5th of September 2019: I gave an invited talk titled “String diagrammatic reasoning in natural language processing” in the joint STRING-SYCO in Birmingham. It was a very nice event, thanks Dan for inviting me.

3rd of September 2019: As an affiliated workshop of TABLEAUX 2019 and jointly with Ekaterina Komendantskaya and Stephane Graham-Lengrand, we are organising a session in honour of Roy Dyckoff. Please consider participating if you knew him or his work.

5-10 August 2019: This week, Martha Lewis and I are teaching a course on Vector Space Models of Meaning in ESSLLI 2019 in Riga. We are also organising the 3rd edition of the Semantic Spaces workshop. I am honoured to give the 2nd evening lecture of this ESSLLI on Thursday the 8th.

1st of August 2019: Today, I started my new job: associate professor in the PPLV group, Department of Computer Science, University College London.

My new email address is: m.sadrzadeh@ucl.ac.uk

22-26 July 2019: I taught in the Applied Category Theory School, the adjoint school of the Applied Category Theory Conference, in the department of Computer Science, University of Oxford. I had 4 students: Dan Shiebler, Aexis Toumi, Adriana Correia, and Lachlan McPheat. Together, and with the help of the TA of the course, Gijs Wijnholds, we worked on vector space models of language for dialogue and discourse, and discovered the role of coalgebras and Fock Space comonads on vector spaces. For a blog post on the n-categories cafe, see here. We are planning to write up the results soon!

17th of June 2019: I was awarded a Royal Academy of Engineering Industrial Scheme Fellowship for the second time! This will start in September and end for a year and I will work on “Cross Domain Unified Representations for Content Similarity” with the BBC R&D’s Chris Newell and Andrew McParland. We are going to find a representation for different types of information encoded in a programme (TV, Radio, News) so that they correlate with the viewers’ behaviours.

12th of June 2019: Our paper “A Type-Driven Vector Semantics for Ellipsis with Anaphora using Lambek Calculus with Limited Contraction”, has just appeared in Vol. 26 .Issue 2 the Journal of Logic Language Information. Thanks Roussanka and Michael for all their efforts.

May 2019: We accepted 13 submissions for our workshop Vector Space Semantics for Dialogue and Discourse in IWCS 2019! We have three keynote speakers, lightening talks, poster sessions, and a panel discussion. Check out the programme here.

May 2019: Watch the video of my colleague Sanjaye Ramgoolam from Centre for String Theory in QMUL, talking to the Plusmaths.org about joint work on the applications of methods from statistical physics to analyse natural language data.

10th of April 2019: Our paper “A Generalised Quantifier Theory of Natural Language in Categorical Compositional Distributional Semantics with Bialgebras” has just appeared online in the journal Mathematical Structures in Computer Science, check it out here.

27-28th of March 2019: I am chairing the third Symposium on Compositional Structures (SYCO 3) in Oxford. We have a very nice and even spread of topics on the theory and practice of category theory, do come by if you are around.

12th of March 2019: Our volume of papers, edited with Glyn Morrill, on Statistical and Logical Models of Meaning has just appeared as a special issue of Journal of Language Modelling. Check it out here.

22nd of February 2019: Our paper “Evaluating Composition Methods for Verb Phrase Elliptical Sentences: has just been accepted for NAACL 2019! I will talk about it in my invited talk in IWCS 2019 in May in University of Gothenburg!

31st of January 2019: I am giving a talk on our recent work on density matrices for entailment in compositional distributional semantics in Sussex’s Data Science seminar series today. The paper has appeared in Annals of Maths and AI, check it out here.

6th of January 2019: I have been invited to give a talk in MFPS XXXV-CALCO 2019, to happen in London in June 2019.

4th of December 2018: I have been invited to give an Evening Lecture in ESSLLI 2019 in Riga! Martha Lewis and I are also teaching a course on Vector Space Models of Meaning there, proceeded by an advanced workshop on applications of vector space models in different fields, see more here.