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Ryan Cory-Wright @ryancorywright.bsky.social · 19/08/2026

Agreed. Mine is how often we are supposed to state the main contributions of the paper. Do we need to state them in the abstract, section 1.0, the aforementioned structure subsection **and** the conclusion? I feel like we collectively (I’m including myself) do too much “strategic positioning”.

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Ryan Cory-Wright @ryancorywright.bsky.social · 19/08/2026

To me this brings up a bigger point: we are trained to respond to reviewers by agreeing with them even if it makes the paper worse, and incorporating the union of all comments. It should be more acceptable to tell reviewers no if their suggestion makes the paper worse.

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Ryan Cory-Wright @ryancorywright.bsky.social · 18/08/2026

FWIW, previously my coauthors have convinced me to keep a conclusion I wanted to delete because "it's what senior people expect to see in a paper when they skim read it, and if they see a conclusion is missing, they might think the paper is incomplete."

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Ryan Cory-Wright @ryancorywright.bsky.social · 18/08/2026

Interesting how, in some fields, it's common to have a detailed limitations section, while this (common) advice in our field is to pretend the paper is perfect. Personally, I don't understand why we have a conclusions section if we are supposed to just restate the abstract. Do we need it?

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Ryan Cory-Wright @ryancorywright.bsky.social · 17/08/2026

Wasserstein DRO is better out-of-sample than SAA, but is often too expensive to implement in practice. We propose an interpolation path heuristic that approximates the performance of WDRO, and is about as expensive as SAA Paper link: arxiv.org/abs/2608.14336

arxiv.org

A Shrinkage Path Heuristic for Wasserstein Distributionally Robust Optimization

Wasserstein distributionally robust optimization (DRO) is a versatile and widely adopted framework for decision-making under uncertainty, yet its standard deterministic reformulations generally contai...

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Ryan Cory-Wright @ryancorywright.bsky.social · 17/08/2026

New preprint alert 🚨🚨 "A Shrinkage Path Heuristic for Wasserstein Distributionally Robust Optimization" led by my PhD student @lingjunmeng.bsky.social (jointly advised w/ Wolfram Wiesemann)

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Ryan Cory-Wright @ryancorywright.bsky.social · 29/08/2025

The Analytics & Operations group at Imperial Business School is hiring for an open-ranked position (especially interested in rookies). Deadline 8 October, please apply via the link here: www.imperial.ac.uk/jobs/search-...

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Reposted by Ryan Cory-Wright

Austin Buchanan @austinlbuchanan.bsky.social · 16/05/2025

We are now accepting nominations for the 2025 ICS Student Paper Award I am joined on the award committee by: -Ryan Cory-Wright (Imperial) -Yongchun Li (Tennessee) -Young Woong Park (Iowa State) connect.informs.org/computing/aw... @ryancorywright.bsky.social @icsinforms.bsky.social

connect.informs.org

ICS Student Paper Award - Computing Society

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Ryan Cory-Wright @ryancorywright.bsky.social · 23/04/2025

When Russia wrote their national anthem, the words changed but the song remained the same as the Soviet one. Today, grants are being cancelled for using the word "inequality" in the abstract (ax<=b). Maybe we can look to history for how to proceed. E.g., how dynamic programming got its name.

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Ryan Cory-Wright @ryancorywright.bsky.social · 23/04/2025

Hidden gems in OR/MS: "L. V. Kantorovich: The Price Implications of Optimal Planning" www.jstor.org/stable/2727266 Duality theory was almost discovered in the Soviet Union in the 1940s by Kantorovich. His research was halted for ideological reasons.

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Ryan Cory-Wright @ryancorywright.bsky.social · 06/04/2025

We concluded the conference with a dinner at Worcester College which made me feel like I was in The Great Hall of Harry Potter! Looking forward to the conference next year (location to be announced)

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Ryan Cory-Wright @ryancorywright.bsky.social · 06/04/2025

Finally, Brendan O'Donoghue (DeepMind, not pictured) gave an overview of some of the recent successes of Google DeepMind in terms of using reinforcement learning and generative AI to solve challenging problems like the Mathematics Olympiad as a step towards artificial general intelligence.

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Ryan Cory-Wright @ryancorywright.bsky.social · 06/04/2025

Eight, Paul Goulart (Oxford) talked about the Clarabel.jl solver for conic programs, and discussed how explicitly formulating quadratic programs in a quadratic way (rather than reformulating them as SOCPs) can improve the performance of an interior point method github.com/oxfordcontro...

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Ryan Cory-Wright @ryancorywright.bsky.social · 06/04/2025

Seventh, Pierre Pinson (Imperial, not pictured) investigated trading strategies for price-taking participants in energy markets as studied in "Distributionally robust trading strategies for renewable energy producers" pierrepinson.com/wp-content/u...

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Ryan Cory-Wright @ryancorywright.bsky.social · 06/04/2025

Sixth, my colleague Gah-Yi Ban (Imperial College Business School) analyzed a retailer that provides an online sharing economy as analyzed in the working paper "Personalized Assortment Optimization for a Subscription Business Model of Experience Goods " papers.ssrn.com/sol3/papers....

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Ryan Cory-Wright @ryancorywright.bsky.social · 06/04/2025

Fifth, Neil Walton (Durham) discussed modeling the NHS waitlist as a queueing system and analyzed how the UK Labour Party's pledge that most patients should have access to elective procedures within 18 weeks is going (TL:DR there is progress, not enough to meet the pledge within the current term) .

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Ryan Cory-Wright @ryancorywright.bsky.social · 06/04/2025

Fourth, Stefan Scholtes (Cambridge) talked about market power in drug supply chains as studied in catalyst.nejm.org/doi/full/10...., ending with a call for other researchers to also investigate the long-run implications of creating non-for-profit drug manufacturers like Civica Rx

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Ryan Cory-Wright @ryancorywright.bsky.social · 06/04/2025

Third, Rouba Ibrahim (UCL) talked about threshold policies for reducing the length of queues in queueing systems as discussed in "The Effects of Information on Abandonment and Congestion in Non-Stationary Priority Queues " papers.ssrn.com/sol3/papers....

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Ryan Cory-Wright @ryancorywright.bsky.social · 06/04/2025

Second, Nitish Jain (LBS, not pictured) talked about the role that expiry dates play in food waste and policies for mitigating food waste as discussed in "Until Later is Preferred Over Sooner: Multiplicity in Product Expiration Dates and Food Waste in Retail Stores" papers.ssrn.com/sol3/papers....

papers.ssrn.com

Until Later is Preferred Over Sooner: Multiplicity in Product Expiration Dates and Food Waste in Retail Stores

A grocery retailer incurs expiration waste (EW) at its store when a perishable product crosses its expiration date without being sold. One frequent scenario acc

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Ryan Cory-Wright @ryancorywright.bsky.social · 06/04/2025

First up we had a fascinating talk from Matthias Holweg (Oxford) on the role of generative AI (chat-GPT etc.) in academic research and right-sizing editorial policies, as discussed in ""

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Ryan Cory-Wright @ryancorywright.bsky.social · 06/04/2025

On 4 April, we had the pleasure of organizing the 2nd London Operations Research Day with Agni Orfanoudaki, Yi-Chun Akchen and Jean Pauphilet at Oxford. The conference took place at Worcester College; thx to Qube Research and Technology for sponsorship A recap thread ⬇️ londonorday.github.io

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Sophie Huiberts @sophie.huiberts.me · 05/04/2025

CALL FOR POSTERS: At the MIP Workshop Europe we will host a poster session. Submissions from all career stages are welcome. Poster deadline: April 14! Workshop: July 1-3

mixedinteger.org

Mixed Integer Programming Workshop 2024

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Ryan Cory-Wright @ryancorywright.bsky.social · 02/04/2025

Just finished reading Abundance by Ezra Klein and Derek Thompson. Super interesting book! Made me think about the NeurIPS submission checklist. Since 2021, the number of questions in the submission checklist has ballooned from 5 to 16. Is this another example of "everything bagel liberalism"?

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Thiago Serra @thserra.bsky.social · 16/03/2025

Sanjeeb Dash gave a very interesting keynote talk at the INFORMS Computing Society Conference @informs.bsky.social @icsinforms.bsky.social on the use of polynomial optimization for automatic knowledge discovery through symbolic regression. 🧵1/N

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Mosek Team @mosek.com · 07/02/2025

Our latest blogpost is a little weekend treat for everybody interested in conic reformulations! themosekblog.blogspot.com/2025/02/a-sm...

themosekblog.blogspot.com

A small breakthrough in the modeling of polynomial denominators

The MOSEK ApS official blog: announcements, new releases, activities, optimization modeling hints and examples.

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Ryan Cory-Wright @ryancorywright.bsky.social · 06/01/2025

We also develop new convex relaxations for low-rank problems, via Shor relaxations. Our original relaxations involve matrices of size n^2 x n^2, which is not tractable. However, we show how to make our relaxations block decomposable, and thus tractable, for several applications.

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Ryan Cory-Wright @ryancorywright.bsky.social · 06/01/2025

New paper alert 🚨 optimization-online.org/2025/01/impr... “Improved Approximation Algorithms for Low-Rank Problems Using Semidefinite Optimization” (w/ Jean Pauphilet) Inspired by Goemans-Williamson’s success in binary quadratic optimization, we generalize to semi-orthogonal and low-rank matrices.

optimization-online.org

Improved Approximation Algorithms for Low-Rank Problems Using Semidefinite Optimization – Optimization Online

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Reposted by Ryan Cory-Wright

arxiv math.OC @arxiv-math-oc.bsky.social · 24/12/2024

Jisun Lee, Andr\'es G\'omez, Alper Atamt\"urk Convexification of Multi-period Quadratic Programs with Indicators arxiv.org/abs/2412.17178

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Ryan Cory-Wright @ryancorywright.bsky.social · 23/11/2024

Are you an Ops researcher in the London area (broadly construed)? Are you free on 4 April 2025? Consider signing up for the London OR day in Oxford: mailing list available at londonorday.github.io

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Ryan Cory-Wright @ryancorywright.bsky.social · 23/11/2024

Hidden gems in OR and MS: When I was a PhD student at the OR Center at MIT, the students ran a software tools course every winter, introducing tools like Git and Julia/JuMP. I shared this with my PhD student, so 2024 version (it gets updated each year): github.com/angkoulouras...

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