# News

**Sep 14, 2022**

I will be giving a keynote at ICCS on tractable probabilistic models and ethical AI. Thanks to Tanya for the invitation! Slides here

**Sep 8, 2022**

Will be giving a talk about ML explainability at the Pharma Data UK event. Slides here.

**Aug 2, 2022**

I will be giving a tutorial on logic and learning and symbolic reasoning more generally at the Oxford machine learning summer school: https://www.oxfordml.school/program-speakers

**Aug 1, 2022**

I gave a keynote talk at the probabilistic logic programming workshop at FLOC 2022. Thanks to Roberta and Luke for the invitation. My talk was on tractable probabilistic models, causality, and explainability. Slides here

I was also supposed to give a tutorial on logic and learning but I could not make it in person, so these slides are pre-recorded and will be uploaded soon: https://vaishakbelle.com/pages/learnfloc2022.html

**July 28, 2022**

Gini and Dexter Yang (who did his Msc with us) have gotten a paper on breaking Captcha using capsule nets in the journal Neural Networks. Congrats to them both. Paper here: https://doi.org/10.1016/j.neunet.2022.06.041

**June 29, 2022**

Advertising a fully funded PhD position on Neuro-symbolic AI and/or explainability; please apply here.

**June 28, 2022**

I’ll be giving a seminar the School of Business. Registration link here: https://www.eventbrite.co.uk/e/principles-and-practice-of-explainable-machine-learning-crc-tickets-370296555967

**June 8, 2022**

I gave a seminar at the C4AI in Sao Paolo, Brazil, as part of the “perspectives on AI” series. The talk was entitled “Principles of Explainable Machine Learning: Interpretability, Reasoning and Beyond”, link (including youtube video) here: https://c4ai.inova.usp.br/c4ai-seminar-perspectives-in-ai-prof-vaishak-belle-june-8th-2022-16h-17h30-brazil-time/

**May 25, 2022**

I’ll be giving an invited talk at the Trustworthy AI workshop in Belfast in June. Registration is free for this hybrid event. Link here: https://computing.ulster.ac.uk/TAI-RM2022/

**May 11, 2022**

Together with Efi Tsamoura and Martin Grohe, we are organizing the Samsung AI neurosymbolic workshop, June 6 - June 8, 2022. Invited speakers include Gary Marcus, Dan Roth, Abhinav Gupta and many more. Please do register to join: https://research.samsung.com/sanw

**May 9, 2022**

The tutorial on explainability in machine learning was given today at AAMAS-2022 virtually, and the videos are now on youtube.

**May 2, 2022**

We have a new journal paper out on a new type of perceptron that addresses the decades-old problem by Minsky of capturing the Boolean XOR function in a single layer. Congrats to Miguel!

**May 1, 2022**

I will be giving a tutorial on explainable machine learning, covering the basics, at AAMAS-2022. See the webpage for details

**April 26, 2022**

We have a new journal paper out on doing intention recognition with ProbLog. Congrats to Gary!

**Mar 23, 2022**

Our AIUK talk was live on the climate stage, with an interdisciplinary discussion between our speakers who covered themes & concepts within the New Real’s work & The New Real Observatory. Link here

**Mar 18, 2022**

I’ll be joining Drew Hemment from EFI to speak on AI + Arts at AIUK, the flagship conference by the Alan Turing institute. Link to event here

**Mar 11, 2022**

I’ll be giving a keynote at the International Workshop on Trustworthy AI for the Future of Risk Management (held in Belfast, Ulster University). Link to event here

**Mar 9, 2022**

Have a new article accepted at the artificial intelligence journal on analying generalized planning in the presence of nondeterminism. Generalized planning looks at the synthesis and correctness of plans with loops, program-like plans, and other branching structures. The article looks at how correctness needs to be defined in the presence of nondeterministic actions, probabilistic effects, unbounded state-action spaces, etc.

**Feb 23, 2022**

Advertising a postdoctoral fellowship on knowledge representation / explainable AI / neuro-symbolic systems, funded by the Royal Society.

**Jan 20, 2022**

The book on neuro-symbolic systems by Md and Pascal, to which I contributed a chapter on learning and logic, is out.

**Jan 17, 2022**

Will be co-chairing the artificial intelligence track of the UK-Tunisia Joint Conference. Co-organised by the Royal Society and the Tunisian Ministry of Higher Education and Scientific Research, and with the support of the British Council in Tunisia, the UK/Tunisia bilateral meeting for early career researchers (ECRs), the conference will take place virtually.

**Dec 15, 2021**

Bjorn and I are advertising a 2 year postdoc on integrating causality, reasoning and knowledge graphs for misinformation detection. See here.

**Dec 1, 2021**

Interested in training neural networks with logical constraints? We have a new paper that aims towards full satisfaction of Boolean and linear arithmetic constraints on training at AAAI-2022. Congrats to Nick and Rafael!

**Nov 24, 2021**

Gave a talk on the chapter “Logic meets Learning: From Aristotle to Neural Networks” at the doctoral training center UnRAVeL – UNcertainty and Randomness in Algorithms, VErification and Logic in Aachen (Virtual). Thanks to Joost-Pieter for the invitation! Link here

**Nov 4, 2021**

Sharing a preview of a book chapter, “Logic meets Learning: From Aristotle to Neural Networks”. Part of the exciting new book “Neuro-Symbolic Artificial Intelligence: The State of the Art” by Pascal Hitzler and Md Kamruzzaman Sarker.

**Oct 12, 2021**

We have a new artificial intelligence journal paper on multi-agent epistemic planning, with collaborators from University of Toronto, Queen’s University and University of Melbourne.

**Oct 8, 2021**

Interested in synthesizing the semantics of programming languages? We have a new paper on that, accepted at OOPSLA.

**Sept 16, 2021**

I gave an invited tutorial the Bath CDT Art-AI. I covered current trends and future trends on explainable machine learning.

**Sept 9, 2021**

I gave an invited talk on “Logic & Learning: From Aristotle to Neural Networks” at the AISEC annual workshop.

**Sept 8, 2021**

I served on an invited panel on “robotics & automation” at the Pharma Data & SmartLabs Congress, 2021.

**July 6, 2021**

**Talk on XAI**

I’ll be giving a talk on explainable AI at Lancaster University (Leipzig) Symposium on Intelligent Systems (LEISYS) on July 22.

**May 17, 2021**

**Talk on logic & learning**

Will be giving a talk on logic & learning at LMU Munich, drawing from my SUM-2020 tutorial. Thanks to Felix for the invitation!

**May 16, 2021**

**Talk on explainable machine learning**

Gave a talk this Monday in Edinburgh on the principles & practice of machine learning, covering motivations & insights from our survey paper. Key questions raised included, how to: extract intelligible explanations + modify the model to fit changing needs.

**May 31, 2021**

**Journal paper on explainable machine learning accepted**

Our work (with Giannis) surveying and distilling approaches to explainability in machine learning has been accepted. Preprint here, but the final version will be online and open access soon.

**May 24, 2021**

**A course on explainable machine learning**

I will be teaching a course on explainability machine learning, a practical introduction, supported by Andreas Bueff and others. Link here.

**May 10, 2021**

**Two papers on probabilistic inference at UAI-2021**

Jonathan’s paper considers a lifted approached to weighted model integration, including circuit construction. Paulius’ paper develops a measure-theoretic perspective on weighted model counting and proposes a way to encode conditional weights on literals analogously to conditional probabilities, which leads to significant performance improvements.

**Paper on weighted model counting at SAT-2021**

Weighted model counting often assumes that weights are only specified on literals, often necessitating the need to introduce auxillary variables. We consider a new approach based on psuedo-Boolean functions, leading to a more general definition. Empirically, we also get SOTA results.

**May 5, 2021**

**Paper on learning linear programming objectives accepted at IJCAI-2021**

We have a new paper accepted on learning optimal linear programming objectives. We take an “implicit“ hypothesis construction approach that yields nice theoretical bounds. Congrats to Gini and Alex on getting this paper accepted. Preprint here.

**Mar 30, 2021**

**Dagstuhl seminar on Trustworthiness and Responsibility in AI**

Sriraam, Shannon, Kush, Joost, Hana and I are excited to be organizing a dagstuhl seminar on Trustworthiness and Responsibility in AI. Link here.

**Mar 25, 2021**

**Project on trustworthy systems**

A consortia project on trustworthy systems and goverance was accepted late last year. News link here.

**Mar 22, 2021**

**Journal paper on prior constraints in tractable models**

A journal paper has been accepted on prior constraints in tractable probabilistic models, available on the papers tab. Congratulations Giannis!

**Mar 21, 2021**

**AIUK**

Will be speaking at the AIUK event on principles and practice of interpretability in machine learning.

**Feb 8, 2021**

**KRML**

Will be co-chairing a special session on knowledge representation & machine learning at KR-2021.

**Jan 19, 2021**

**Workshop on deep learning and logic**

Together with Efi, Loizos & Phokion, we are co-organising a workshop on deep learning & logic.

**Jan 05, 2021**

**3 journal papers accepted**

Three journal papers have been accepted, all on tractable probabilistic models. With Andreas and Stefanie, a continuous variant is proposed. With Michael, modeling fairness is considered. And with Lewis, the learning of moral responsibility is investigated.

**Oct 22, 2020**

**Talk at AI, ethics & society**

The talk is entitled *Fairness and Moral responsibility meets Computational Tractability*; link to the event here.

**Oct 15, 2020**

**Talk at U3A**

I’ll be giving a talk on responsible AI at the Edinburgh chapter of U3A. Thanks to Rod & George for the invitation.

**Sep 25, 2020**

**Talk at the SICSA conference**

I’ll be giving a talk at the conference on fair and responsible AI in the cyber physical systems session. Thanks to Ram & Christian for the invitation. Link to event.

**Scotsman reports on XAI work with NatWest Group**

A recent collaboration with the NatWest Group on explainable machine learning is discussed in The Scotsman. Link to article here. A preprint on the results will be made available shortly.

**Lecture at FU Berlin on Fair and Responsible AI**

I'll be giving a lecture at FU Berlin on Interpretable, Fair and Responsible AI, all approached via probabilistic circuits. See the recent work with Varley, Hammond, Bueff, Papantonis, for example. Link to the class here.

I'll be giving a seminar at the LAIV (Lab For AI Verification) at Heriott-Watt on our ECAI-2020 paper with Anton. The paper interprets variational autoencoders using probabilistic circuits. Link to event here.

**Journal paper on Semiring programming**

A journal paper has been accepted that positions a new framework we call *semiring programming*, which extends probabilistic programming with connectives taken from any semiring. This then allows us to capture a wide range of search and combinatorial problems considered in AI, including inference, SAT, convex programming, weighted model integration etc, in a single unified programming model. Preprint here.

**Tutorial on Logic meets Learning in Infinite Domains**

I will be giving a tutorial on logic and learning with a focus on infinite domains at this year's SUM. Link to event here.

Our paper on synthesizing plans with loops in the presence of probabilistic noise, accepted the journal of approximate reasoning, has also been accepted to the ICAPS journal track. Preprint to the full paper here.

**Papers at KR's recently published research track**

Extended abstracts of our NeurIPS paper (on PAC-learning in first-order logic) and the journal paper on abstracting probabilistic models was accepted to KR's recently published research track.

**Accepted paper on logic, probability & action**

A survey paper has been accepted at SUM, which looks at the semantics for integrating first-order logic, probability & action. In particular, the situation calculus, a dialect of first-order logic, is considered as the underlying representation language. Preprint here.

**CP paper on generating random (logic) programs**

Paulius' work on algorithmic strategies for randomly generating logic programs and probabilistic logic programs has been accepted to the principles and practise of constraint programming (CP2020). The work is motivated by the need to test and evaluate inference algorithms. A combinatorial argument for the correctness of the ideas is also considered. Preprint here.

**AKBC paper on learning credal sum-product networks**

Our paper (joint with Amelie Levray) on learning credal sum-product networks has been accepted to AKBC. Such networks, along with other types of probabilistic circuits, are attractive because they guarantee that certain types of probability estimation queries can be computed in time linear in the size of the network. The problem we tackle is how the learning should be defined when there is missing or incomplete data, leading to an account based on imprecise probabilities. Preprint here.

**Journal paper on abstracting probabilistic models**

A journal paper on abstracting probabilistic models has been accepted. The paper studies the semantic constraints that allows one to abstract a complex, low-level model with a simpler, high-level one. The framework is applicable to a large class of formalisms, including probabilistic relational models. The paper also studies the synthesis problem in that context. Preprint here.

**Talk at the University of Glasgow**

I gave a talk on our recent NeurIPS paper in Glasgow while also covering other approaches at the intersection of logic, learning and tractability. Thanks to Oana for the invitation.

If you are attending AAAI this year, you may be interested in checking out our papers that touch on fairness, abstraction and generalized sum-product problems.

**Journal paper on goal regression and progression with probabilities**

Our work on (goal) regression and progression operators for first-order probabilistic logics will appear in Artificial Intelligence. It studies how representations in these logics behave in a dynamic setting, and introduces operators for reducing a query after actions to an initial state, or updating the representation against those actions.

Conference link Our work on symbolically interpreting variational autoencoders, as well as a new learnability for SMT (satisfiability modulo theory) formulas got accepted at ECAI.

**Journal paper on synthesis of recursive plans**

Our work on synthesizing plans with loops in the presence of noise will appear in the international journal of approximate reasoning. It investigates how the AND-OR controller search of Hu & De Giacomo can be extended for strong goal satisfaction and termination conditions when tackling stochastic nondeterminism.

**Talk at Simon Fraser University**

Last week, I gave a talk on our NeurIPS paper on implicit learnability in FOL at SFU. Thanks to Eugenia and Jim for hosting me. Slides here.

If you are attending NeurIPS this year, you may be interested in checking out our papers that touch on morality, causality, and interpretability. Preprints can be found on the workshop page.

**2019 ILP best student paper award in the long papers**

We were thrilled to hear that our recent paper at ILP, entitled "Learning Probabilistic Logic Programs over Continuous Data", received the best student paper award in the long paper track.

**Talk at AI Center Cambridge, Samsung Research**

I gave a talk on our upcoming NeurIPS paper on implicit learnability in FOL at the Samsung research center in Cambridge. Thanks to Efi for the invitation. Slides here.

We were pleased to learn that our work entitled "Implicitly Learning to Reason in First-Order Logic" was chosen as a best paper at The Fourth International Workshop on Declarative Learning Based Programming, IJCAI, 2019.

Link In the last week of October, I gave a talk informally discussing explainability and ethical responsibility in artificial intelligence. Thanks to the organizers for the invitation.

**Invited talk at the Samsung AI Forum**

Event link I was very excited to be giving an invited talk at the Samsung AI Forum in Seoul today. Thanks to Samsung for the invitation and the hospitality.

**The quest for interpretable and responsible artificial intelligence**

The article, to appear in The Biochemist, surveys some of the motivations and approaches for making AI interpretable and responsible.

**Royal Society University Research Fellow**

I'm thrilled to have received the Royal Society University Research Fellowship. Announcement from the Royal Society can be found here.

I gave a talk at the beyond symposium 2019, which aims to put together artists, scientists, economists, among others. The talk was on experiential AI and the challenges.

**NeurIPS paper on PAC learnability for FOL**

Brendan and I have our paper on (implicit) PAC learnability for first-order logic accepted at NeurIPS.

**Experiential AI at Ars Electronica**

Drew, Dave, Larissa and I had the opportunity to discuss the motivatons and foundations for instigating the new research theme of Experiential AI in a 90 minute talk.

**Logic & Learning Dagstuhl Seminar**

Thanks to Kristian, Michael, Phokion and Daniel for organizing a great seminar at the Dagstuhl. Along with the discussions, I had an opportunity to reflect on the ways logic ehances learning. Slides on a short presentation I gave, entitled six perspectives on logic & learning (in infinite domains) can be found here.

**Experiential AI editorial at Leonardo**

Paper link Drew, Ruth, Larissa, Dave, Frank and I have an editorial accepted on experiential AI at the Leonardo journal

**Talk at the Skeptics on the Fringe**

Link I gave a talk at the Skeptics on the Fringe on ethical AI. Thanks to the Edinburgh Skeptics for the invitation.

**Paper accepted on program induction**

The paper tackles unsupervised program induction over mixed discrete-continuous data, and is accepted at ILP.

Last week, I gave a seminar at NII in Tokyoon our recent work on interpretable and responsible AI. Thanks to Katsumi Inoue for organising the talk.

I gave a seminar at the Indian Institute of Science on our recent work on interpretable and ethical AI. Thanks to Partha Talukdar for organising the talk.

Seminar link I gave a seminar at the Sabancı University in Turkey on our recent work on interpretable and ethical AI. Thanks to Esra Erdem for organising the talk.

**EPSRC IAA grant for Credit Risk**

Link Raffaella and I are thrilled to receive an EPSRC IAA grant on "AI for credit risk."

Last week, I gave a talk at the pint of science on automated systems and their impact, touching on the topics of fairness and blameworthiness.

Larissa, Drew, Dave and I are excited to be giving a talk on experiential AI at the ZKM Center for Art and Media Karlsruhe.

**Experiential AI: a new research agenda in which artists and scientists come together**

Together with colleagues from Edinburgh and Herriot Watt, we have put out the call for a new research agenda.

**Tutorial on unifying logic, probability and dynamics**

I gave the tutorial at the 16th International Conference on Principles of Knowledge Representation and Reasoning / KR 2018.

**Probabilistic Planning by Probabilistic Programming Talk**

I gave a talk at the Cognitive Robotics Workshop at KR-18, entitled Probabilistic Planning by Probabilistic Programming: Semantics, Inference and Learning.

**Towards Intepretable & Responsible AI**

I gave a talk at the London Machine Learning Meetup. Thanks to the organizers for the invitation.

**ACAI 2018: Summer school on statistical relational AI**

I gave at a tutorial on effective inference and learning with probabilistic logical models in continuous domains, at ACAI 2018.

**IJCAI-ECAI 2018 Workshop on Learning & Reasoning**

We are organising a workshop on integrating learning and reasoning at IJCAI-ECAI in Sweden.

I'm thrilled to become a member of the Royal Society of Edinburgh (RSE) Young Academy of Scotland.

The article introduces a general logical framework for reasoning about discrete and continuous probabilistic models in dynamical domains.

**The End of Privacy 1.0: Data Portability and Information Rights**

I gave a talk, entitled "Explainability as a service", at the above event that discussed expectations regarding explainable AI and how could be enabled in applications.

In the paper, we exploit the XADD data structure to perform probabilistic inference in mixed discrete-continuous spaces efficiently.

**Presentation at ICAPS-18 Journal Track**

Our MLJ (2017) article on planning with hybrid MDPs was accepted for presentation at the journal track.

**Seminar at Ben-Gurion University**

I gave a seminar on decision-theoretic planning via probabilistic programming, based on our recent MLJ (2017) article.

**EPSRC: Towards Explainable and Robust Statistical AI**

I'm thrilled to soon get started on a EPSRC first grant on XAI.

Through the Alan Turing Institute, we (Stefanie, Andreas and I) mentored at the Deloitte Datathon, on the theme of financial services for social good.

Last week, I gave an IPAB (Edinburgh) seminar on decision-theoretic planning via probabilistic programming, based on our recent MLJ (2017) article.

I attended the SML workshop in the Black Forest, and talked about the connections between explainable AI and statistical relational learning.

I gave a talk entitled "Perspectives on Explainable AI," at an interdisciplinary workshop focusing on building trust in AI.

**Probabilistic Planning by Probabilistic Programming**

An article at the planning and inference workshop at AAAI-18 compares two distinct approaches for probabilistic planning by means of probabilistic programming.

The paper discusses the epistemic formalisation of generalised planning in the presence of noisy acting and sensing.

**Interpretability of Algorithmic Systems Workshop**

I gave a talk at the workshop on how the synthesis of logic and machine learning, especially areas such as statistical relational learning, can enable interpretability.

**Talk at the University of Oxford**

I gave a talk on decision-theoretic planning via probabilistic programming at Oxford.

**Hybrid Reasoning for Intelligent Systems, 2017**

I gave a talk and a tutorial at the Hybrid reasoning workshop at Aachen, Germany.

**PhD position on Explainable AI, KR and ML**

Applications are invited for a PhD position in Artificial Intelligence, to be based in the School of Informatics at the University of Edinburgh.

I'm thrilled to be a faculty fellow at the Alan Turing Institute.

**Seminar on First-order probabilistic relational models**

I gave a seminar on extending the expressiveness of probabilistic relational models with first-order features, such as universal quantification over infinite domains.

**Machine learning Journal article**

We study planning in relational Markov decision processes involving discrete and continuous states and actions, and an unknown number of objects (via probabilistic programming).

**Tutorial on First-Order Multi-agent Logics in Action**

I'm giving a tutorial on First-Order Multi-agent Logics in Action at IJCAI in Melbourne, Australia.

**Tutorial on Unifying Logic, Dynamics and Probability**

I'm giving a tutorial on Unifying Logic, Dynamics and Probability - Foundations, Algorithms and Challenges at IJCAI in Melbourne, Australia.

The paper discusses how to handle nested functions and quantification in relational probabilistic graphical models.

**Talk at the Amsterdam Machine Learning Lab**

I discussed advances in open-universe probabilistic models.

**Dagstuhl seminar on epistemic planning**

I attended a workshop on epistemic planning, where I presented a poster on some results pertaining to programs in unbounded stochastic domains.

**IJCAI 2017 Workshop on Logical Foundations for Uncertainty and Learning**

Henri, Lluis, Guilin, James, Marcelo and I are organising a workshop on the logical foundations of uncertainty and learning.

**IJCAI-17 Early Career Spotlight Track**

Honored to be giving a talk at the IJCAI-17 Early Career Spotlight track.

**2 papers accepted at IJCAI 2017**

The first introduces a first-order language for reasoning about probabilities in dynamical domains, and the second considers the automated solving of probability problems specified in natural language.

I went over symbolic approaches to probabilistic inference and optimisation.

**ICAPS 2017 Workshop on Generalized Planning**

Siddharth, Sheila, Ron and I are organizing a workshop on generalized planning to be held at ICAPS.

**Edinburgh University International Development Society (EUID)**

I gave a talk on the risks of artificial intelligence and research priorities at the International Development Society.

**Talk at the University of York**

I discussed model counting approaches for mixed discrete-continuous probability spaces.

These introduce (1) the use of symbolic representations in solving logical linear programs, and (2) an extension of weighted model counting for open universes.

**AAAI-17 Workshop on Symbolic Inference and Optimization**

Optimization Scott, Rodrigo, Kristian, Martin and me are organizing a workshop to explore and promote symbolic approaches to probabilistic inference, numerical optimization and machine learning.

**Moved to the University of Edinburgh**

Since October, I am at the University of Edinburgh.

An abridged version of our UAI-15 paper on approximate inference will be presented in the sister conferences track at IJCAI-16.

We consider the question of how generalized plans (plans with loops) can be deemed correct in unbounded and continuous domains.

These introduce (1) component caching in hybrid domains, and (2) a first-order logic of probability with only knowing.

**Machine Learning Journal Award at ECML-PKDD**

Our Paper Planning in Discrete and Continuous Markov Decision Processes by Probabilistic Programming received the best student paper award at ECML-PKDD.

We have 4 papers accepted at IJCAI-15. These cover (1) weighted model counting for hybrid domains, (2) the GOLOG language in hybrid domains, (3) interactions between only knowing and common knowledge, and (4) only knowing defined in classical modal logic.

**Microsoft Best Paper Award at UAI**

Our Paper Hashing-Based Approximate Probabilistic Inference in Hybrid Domains received the best paper award at 31st Conference on Uncertainty in Artificial Intelligence (UAI), 2015.

Since November, I am a postdoctoral researcher at KU Leuven.

We introduce (a) PREGO, an action language for cognitive robotics in continuous domains, and (b) computing compact conditional plans in partially observable domains.

We address the progression of basic action theories in (a) multiagent systems and (b) stochastic domains.

**Silver medal by the Kurt Gödel Society**

My project on cognitive robotics was selected as a finalist for the Kurt Gödel Research Prize Fellowship, receiving a silver medal by the Kurt Gödel Society.

I have been selected to participate in the Heidelberg Laureate Forum, where I will meet with Abel, Fields and Turing Laureates.

We introduce a rich account of robot localization.

**Summer Research Project in Knowledge Representation**

We are offering a summer research project in knowledge representation.

**CSC 2502/486: Knowledge Representation**

This Winter, I will be teaching CSC 2502/486 Knowledge Representation and Reasoning.