Author: Dan Ghica

Leader of the Programming Languages team

Time: Thursday, 29 April 2021, 9:30 Edinburgh time (UTC+1) Abstract: We’ll tour my Nominal techniques Haskell package, which provides easy access to types and type classes with nominal-style binding. Why do you need this?  Because it lets you program and reason on name-like data (e.g. variable symbols, pointers, links), and binding (e.g. name-binding, hiding, locality) at […]

About Huawei Research and Development UK Limited Huawei’s vision is to enhance the lives of humanity and improve the environment by building a fully connected and intelligent world. Huawei has the largest R&D organisation in the world with 80,000 employees in research centres around the globe. In the UK, we already have design centres in […]

Date/Time: 2021/04/08 This talk will overview how to improve your C++ programs using functional techniques, based on Ivan Cukic book ISBN-10(1617293814). C was born as C with Classes, but the addition of Templates and STL, made C++ a multi-paradigm language. The book goes over Functional Programming features included in the latest C++ implementations C++11,C++14 and […]

Efficient gradient descent-style local optimisation algorithms have been studied extensively and applied abundantly throughout the field of deep learning. On the other hand, convergent global optimisation algorithms that never yield an incorrect result — such as branch-and-bound methods — are much less practically available. Optimisation is a core component of supervised machine learning, having broad […]

Abstract String diagrams are becoming the established mathematical language of diagrammatic reasoning, with the mantra of ‘only connectivity matters’: equal terms are represented as isomorphic (or isotopic) diagrams. Unfortunately, when adding more structure to categories in the form of additional axioms, this mantra is lost: we must now consider diagrams up to rewriting. To perform […]

Time: 2021-02-11 09:30-10:30 ((UTC00:00) Edinburgh Video of the talk: https://youtu.be/sMWOQNfYIUw Speaker: James Wood, Strathclyde U Abstract: The metatheory of simple type systems presented using de Bruijn indices is well understood. We know to follow the principle that variable binding is the only interaction between the context and typing rules other than the variable rule. From […]

Jesse Sigal, University of Edinburgh. Automatic differentiation (AD) is an important family of algorithms which enables derivative based optimization. We show that AD can be simply implemented with effects and handlers by doing so in the Frank language. By considering how our implementation behaves in Frank’s operational semantics, we show how our code performs the […]

Time: December 10th, 10 am. Speaker: Sam Lindley, Senior Consultant Abstract: In software systems effects are pervasive, e.g.: concurrency, distribution, exceptions, I/O, and nondeterminism. Effect handlers are a general programming feature that can be used for modularly implementing all of these effects and more. They were introduced by theoretical computer scientists studying the theory of […]

Our intern Bruce Collie, together with Jackson Woodruff, and Michael O’Boyle have won the best paper award at GPCE this year for their paper Modeling Black-Box Components with Probabilistic Synthesis. Paper : https://arxiv.org/abs/2010.04811 Talk video: https://conf.researchr.org/details/gpce-2020/gpce2020/1/Modeling-Black-Box-Components-with-Probabilistic-Synthesis Congratulations!

Technical Talk: Syntactic reasoning for digital circuits using graphs Dan R. Ghica When: Thursday, November 19, 10am (Edinburgh) Abstract: I will present a general diagrammatic theory of digital circuits, based on connections between monoidal categories and graph rewriting. The main achievement of the paper is conceptual, filling a foundational gap in reasoning syntactically and symbolically […]

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