# Dr Dimitrios Kartsaklis

**Postdoctoral Research Assistant**

#### Research Interests

- Category-theoretic compositional models of natural language
- Natural language semantics
- Mathematics of language
- Machine learning-Deep learning for NLP
- Categorical Quantum Mechanics
- Machine translation

__Biography__

I am a Greek computer scientist and computational linguist. I have completed my DPhil at the Quantum Group of the University of Oxford, where my research was focused on category-theoretic compositional models of natural language (thesis title: *"Compositional Distributional Semantics with Compact Closed Categories and Frobenius Algebras"*). I also hold an MSc in Artificial Intelligence from the University of Edinburgh. In the past I have worked as software engineer and system analyst for more than 15 years. At the same time I am an experienced technical translator/writer having many collaborations with the Greek academia and top publications such as *Scientific American* (Greek Edition). Other scientific interests include: distributional models of semantics; pregroup and categorial grammars; category theory; machine learning/deep learning (especially in relation to composition); machine translation and translation technologies; interactive MT and practical applications of MT; wide-coverage statistical parsing; quantum computing

__Groups__

__Collaborators__

For the recent years I mainly work with Mehrnoosh Sadrzadeh; I also collaborate with Bob Coecke, Matt Purver, Martha Lewis and Jianpeng Cheng.

__Projects__

- AFOSR: Algorithmic and Logical Aspects when Computing Meanings
- EPSRC: Compositional Distributional Models of Meaning

__Resources__

For datasets, code, word embeddings and other resources related to my work, please see the resource page of the CompLing Lab.

__Activities__

- 10th Feb 2017: I'm giving an invited talk at the
*Oxford Advanced Seminar on Informatic Structures*(OASIS) of the University of Oxford (title TBA). - August 2016: Invited talk at the
*Workshop on Tensors, their Decomposition and Applications*(QMUL) on "Tensor-based Models of Natural Language Meaning" - July 2016: Talk at the
*Workshop of Statistical and Logical Models of Meaning*(NASSLLI 2016, Rutgers University), "A Coordination Account for the DisCo Model" - June 2016: Talk at the
*Workshop on Semantic Spaces at the Intersection of NLP, Physics and Cognitive Science*(Strathclyde University, Glasgow), "Coordination for Categorical Compositional Distributional Semantics" - June 2015: Invited talk at the EECS
*Theory Group Seminar*(QMUL), "Open System Categorical Quantum Semantics in Natural Language Processing" - May 2015: Invited talk at the
*NLIP seminar*, University of Cambridge, "Open System Categorical Quantum Semantics in Natural Language Processing" - March 2015: Invited talk at the
*Computational Linguistics MSc course*of the University of Oxford, "Compositional Distributional Models of Meaning"

__Organization__

- I organize (with M. Sadrzadeh) a tutorial on "Compositional Distributional Models of Meaning" at COLING 2016 (Osaka, Japan). More information can be found here.
- I co-organize (with M. Sadrzadeh and M. Purver) the 15th Meeting on Mathematics of Language (MoL) which will be held in QMUL the summer of 2017
- I co-organize (with M. Lewis) a one-week ESSLLI 2017 course with title "Introduction to Categorical Compositional Distributional Semantics"
- I co-organized (with M. Lewis and L. Rimell) the workshop on "Semantic Spaces at the Intersection of NLP, Physics and Cognitive Science", which was co-located with QPL 2016 and took place on 11 June 2016, Glasgow, Scotland.
- I organise the NLP seminar series of the Computational Linguistics Lab.
- I organise the meetings for the AFOSR project on "Algorithmic and Logical Aspects when Computing Meaning", which is shared between QMUL and the University of Oxford.

__Media__

*Algebra bridges syntax and meaning in natural language*(technology.org, July 29, 2014)*Entanglement in quantum phenomena and natural language*(technology.org, May 21, 2014)

__Selected publications__

(For a full list please see my academia.edu profile)

*Distributional Inclusion Hypothesis for Tensor-based Composition.*D. Kartsaklis, M. Sadrzadeh. COLING 2016. To appear (pdf)*A Compositional Distributional Inclusion Hypothesis.*D. Kartsaklis, M. Sadrzadeh. Conference on the Logical Aspects of Computational Linguistics, 2016. To appear (pdf)*Coordination in Categorical Compositional Distributional Semantics.*D. Kartsaklis. Workshop on Semantic Spaces at the Intersection of NLP, Physics and Cognitive Science (co-located with QPL-2016), 2016 (pdf, bibtex)*A Coordination Account for the DisCo Model*. NASSLLI Workshop on Statistical and Logical Models of Meaning, 2016 (pdf)*Sentence Entailment in Compositional Distributional Semantics.*E. Balkir, D. Kartsaklis, M. Sadrzadeh. International Symposium on Artificial Intelligence and Mathematics (ISAIM), 2016 (pdf)*Syntax-Aware Multi-Sense Word Embeddings for Deep Compositional Models of Meaning.*J. Cheng and D. Kartsaklis. Conference on Empirical Methods in Natural Language Processing (EMNLP), 2015 (pdf, bibtex)*A Frobenius Model of Information Structure in Categorical Compositional Distributional Semantics.*D. Kartsaklis, M. Sadrzadeh. 14th Meeting on the Mathematics of Language (MoL), 2015 (pdf, bibtex)*Open System Categorical Quantum Semantics in Natural Language Processing.**Evaluating Neural Word Representations in Tensor-Based Compositional Settings.*D. Milajevs, D. Kartsaklis, M. Sadrzadeh, M. Purver. Proceedings of EMNLP 2014 (pdf, bibtex)*A Study of Entanglement in a Categorical Framework of Natural Language.*D. Kartsaklis, M. Sadrzadeh. In Proceedings of the 11th Workshop of Quantum Physics and Logic (QPL 2014), EPTCS 172. 2014 (pdf, bibtex)*Resolving Lexical Ambiguity in Tensor Regression Models of Meaning.*D. Kartsaklis, N. Kalchbrenner, M. Sadrzadeh. In Proceedings of the 52nd Annual Meeting of the Association of Computational Linguistics (ACL 2014). 2014 (pdf, bibtex)*Compositional Operators in Distributional Semantics.*D. Kartsaklis. Springer Science Reviews, 2014 (pdf, bibtext)*Prior Disambiguation of Word Tensors for Constructing Sentence Vectors.*D. Kartsaklis, M. Sadrzadeh. In Proceedings of the 2013 Conference on Empirical Methods in Natural Language Processing (EMNLP 2013), 2013. (pdf, bibtex)*Reasoning about Meaning in Natural Language with Compact Closed Categories and Frobenius Algebras*, D. Kartsaklis, M. Sadrzadeh, S. Pulman, B. Coecke. In Logic and Algebraic Structures in Quantum Computing and Information (pdf)*A Unified Sentence Space for Categorical Distributional-Compositional Semantics: Theory and Experiments*, D. Kartsaklis, M. Sadrzadeh, S. Pulman. In Proceedings of COLING 2012, 2012 (pdf, bibtex)