Some interesting ideas in the IEEE P3109 Interim Report on Binary Floating-point Formats for Machine Learning. Happy to have been able to play a small contributing role in this community effort. github.com/P3109/Public...

I noticed recently that the concept of a powerset lifting has come to the attention of Premier Inn. Now for the semantics.

Pretty sure this is unsatisfiable 😂

My review of my summer holiday reading, @sarahoconnorft.ft.com's "We are not Machines". Strong recommend. constantinides.net/2026/07/16/w...

We Are Not Machines: Craft, Care and Collective Agency

Sarah O’Connor’s We Are Not Machines: The Fight for the Future of Work accompanied me on my summer holiday, but it has continued to unsettle how I think about work. It is an engaging, accessible bo…

constantinides.net

A massive congratulations to all of our winners and a big thank you to everyone who presented or attended our #ECRShowcase today. Full professional photos from our event will be published early next week!

Our keynote speech is underway with Dr Gbemi Oluleye, Associate Professor in Sustainable Market Mechanisms, delivering her talk ‘‘The 3 C’s for Impact” to a lively audience

🚨 The #ECRShowcase results are in! First up: our Creativity Prize winners 🪄 Congratulations to: 🎖️Afraa Alzoubi Department of Bioengineering 🎖️Mario Miranda Department of Aeronautics 🎖️Sumesh Erikandath Dep of Civil & Environmental Engineering 🎖️Alexandra Yarger Department of Bioengineering

Back from beautiful Lausanne where I was a member of the jury for Ayatallah Elakhras' PhD "Efficient Data Steering in Dataflow Circuits". Congratulations to Aya! (Also to advisors Ienne and Josipović.) It was great working with Bourgeat, Campanoni, Falsafi and Zhang!

In 1967, Wyner's "Random Packings and Coverings of the Unit n-Sphere" showed that the number of spherical caps of angular radius theta required to cover an n-dimensional sphere asymptotically approaches exp[-n log sin theta + o(n)] as n increases. (1/3)

My latest (and probably final) blog post on block number formats and direction preservation. This time I deal with the number formats for scale factors. constantinides.net/2026/06/11/p...

Precision Matters in Block Scales

This is the third post in a sequence relating to the geometry of block number formats as angle preservers. In my previous post, I argued that block number formats remain direction preservers even w…

constantinides.net

The House of Commons Science, Innovation and Technology Committee has published my written submission to their inquiry "Low-energy computing" which means I am now free to publish it here: committees.parliament.uk/writtenevide...

I have written an accessible blog post on the recent preprint I published with Bardia Zadeh on taking a geometric view on what low precision means for vector representations, especially relevant to block arithmetics. constantinides.net/2026/06/02/d...

Directionality in Low-Precision

In a couple of recent posts [1,2], I have been trying to reason through the geometric properties of block number formats. The basic idea is that when a group of numbers shares a scale factor, the s…

constantinides.net

Congratulations again to my freshest @imperialcollegeldn.bsky.social PhD graduates who attended their ceremony at the Royal Albert Hall today. Here I am with Martin Langhammer and Benjamin Biggs. Celebrations all round!

I had the immense pleasure of joining colleagues from across Europe at University of Geneva last week for the LERU DOCT policy group. Delighted to have joined the group as a steering committee member. Looking forward to working with LERU and sharing the experience of @imperialecri.bsky.social!

Zadeh and I have uploaded a new preprint: Direction-Preserving Number Representations. Spoiler: FP is provably suboptimal but NVFP4 does a pretty good job! We have Lean proofs: Paper: arxiv.org/pdf/2605.07662 GitHub: github.com/bardia01/Dir...

@ukparliament.parliament.uk Education SC has published my written submission to their inquiry "The use of Artificial Intelligence and EdTech in Education" which means I am now free to publish it. You can find all written submissions - including mine - at committees.parliament.uk/work/9642/th....

The use of Artificial Intelligence and EdTech in Education - Written evidence - Committees - UK Parliament

Written evidence submission publications for The use of Artificial Intelligence and EdTech in Education.

committees.parliament.uk

Congratulations to Jeffrey Wong, whose paper "A3: an Analytical Low-Rank Approximation Framework for Attention" with Zhang, Cao, Gimenes, Bouganis, Luk and Zhao has been accepted by ICLR 2026.

Interested in a PhD or postdoc in digital neuromorphic computing? @neural-reckoning.org, Christos Bouganis and I are recruiting! Please share with anyone who may be interested. Applications close on 15 May 2026. www.imperial.ac.uk/jobs/search-...

Description

Please note that job descriptions are not exhaustive, and you may be asked to take on additional duties that align with the key responsibilities ment...

imperial.ac.uk

Congratulations to my former PhD student Martin Langhammer on the acceptance of his paper "High Performance Multi-Processor Systems on FPGA" at HEART 2026

Had a great away day with the @imperialecri.bsky.social team yesterday at our White City campus. It was great to see the alignment in values coming through so strongly.

Huge congratulations to @martaandronic.bsky.social who yesterday passed her PhD viva with flying colours. Very positive comments from the examiners Kia Bazargan and Christos Savvas Bouganis. Marta has been a joy to supervise. (1/2)

Back from a lovely couple of days at the beautiful @edinburgh-uni.bsky.social, doing a PhD viva in Themis Prodromakis' group on machine-learning accelerators and then spending time with my collaborator Jianyi Cheng and his PhD student Chenyang Ai on egraphs.

Great thought-provoking lecture from Peter Hacker on Wittgenstein, hosted by The Royal Institute of Philosophy. With a wonderful ending "each generation must roll its own". There's a great need to "transform latent nonsense into patent nonsense" right now. www.youtube.com/watch?v=fcNE...

Wittgenstein and his impact upon Anglophone philosophy, Professor Peter Hacker

YouTube video by The Royal Institute of Philosophy

youtube.com

Spent today at a great @raeng.org.uk / LRF workshop on Sustainability and Safety at the Frontier of AI: A broad scoping exercise on what's coming by 2040 and how we get there. I emphasised need for algorithm / representation / architecture codesign. Also discussions on social / econ drivers in AI.

Attended my first meeting of the IEEE P3109 working group on Arithmetic Formats for Machine Learning today. Some interesting discussions - looking forward to more to come.

Happy British Philosophy Fortnight 2026. Much of my work involves questions about knowledge, abstraction, and value. Philosophy is everywhere. #philosophymatters

Block Number Formats are (Still!) Direction Preservers In a follow-up to my last blog post, here I show that even under coarse rounding of scaling factors to powers of two, block number formats can be considered direction preservers. constantinides.net/2026/03/15/b...

Block Number Formats are (Still!) Direction Preservers

In my previous post, I argued that block number formats can be understood geometrically as direction preservers. That argument relied on an idealization: once a block direction had been chosen, its…

constantinides.net

Spent a great morning with students and staff of Imperial Maths School. Highlight: student telling me that "here, if I am worried or concerned about something, people actually listen to me". Huge kudos to the maths school team.

Very useful clarity in this letter from UKRI to Chi Onwurah on funding - especially the Sankey diagram. committees.parliament.uk/publications...

Block Number Formats are Direction Preservers I've written a brief blog post about block number formats (MX, NVFP4, block floating point, block mini-floats, etc.) from a geometric perspective. constantinides.net/2026/03/07/b...

Block Number Formats are Direction Preservers

I’ve recently returned from the SIAM PP 2026 conference and as always, conferences help provide time for research reflection. One thing I’ve been reflecting on during my journey back is…

constantinides.net