🤓Fischenders🤓

Working so much on Benders decomposition in the last years, that I had a personality split

[Matteo Fischetti @MFischetti]

@Orly01 @mmonaci74 Well, we gave the conjecture, you have to (dis)prove it! Possible features include the obj. value (and the degree of infeasibility if you use the simplex dual), the degree of degeneracy, etc. My #AI friends would even try a #DNN to self-drive along the polyhedron edges

[Subject to @Subjectto_]

Subject to: Jeff Linderoth (University of Wisconsin-Madison), https://t.co/grlZxV373j, #orms #optimization #Analytics #integerprogramming @JeffLinderoth @UWISyE @UWMadison

[Matteo Fischetti @MFischetti]

… including easy-to-separate #Benders cuts from linear reformulations of quadratic terms (including McCormick with triangle inequalities). Have a look if you interested in quadratic #MIPs #orms

[🤓Fischenders🤓 @Fischenders]

… including an explicit statement for the projection of McCormick inequalities #folklore

[Matteo Fischetti @MFischetti]

Benders-like cuts for a quadratic #MIP problem arising in optimal #winfarm design #orms; joint work with @MartiFischetti (and @Fischenders) aka #MF^2

https://t.co/TrtZwPRU4q

[Matteo Fischetti @MFischetti]

This remembers me an old idea of mine of using this as a crossover operation in #genetic algorithms for #orms using an autoencoder to compute the latent space of the feasible solutions of a combination optimization problem such as #VRP. Worth a try?

[MBodur @meurevine]

Watching a hybrid talk by @JeffLinderoth on subspace clustering via integer programming. Benders decomposition, column generation, all of our favourites are there; such a nice work by @JeffLinderoth @jim_luedtke Daniel and Akhilesh! #KnightsOfMIP

[MBodur @meurevine]

Watching a hybrid talk by @JeffLinderoth on subspace clustering via integer programming. Benders decomposition, column generation, all of our favourites are there; such a nice work by @JeffLinderoth @jim_luedtke Daniel and Akhilesh! #KnightsOfMIP

[🤓Fischenders🤓 @Fischenders]

… my heart skipped a beat when I misread “Optimization without Benders” conference #orms

[Peter Richtarik @peter_richtarik]

Here is a video of the talk I gave this week at the “Optimization without Borders” conference (Sochi, Russia), organized in honor of the 65th birthday of Yurii Nesterov” https://t.co/0hUxsODLMi

[🤓Fischenders🤓 @Fischenders]

I’m waiting for #Nerd immunity...

[🤓Fischenders🤓 @Fischenders]

Still alive and kicking...

[Thiago Serra (@thserra.bsky.social) @thserra]

The @IFORS_News lecture at #informs2020 on mathematical optimization for social distancing was delivered by @MFischetti, but @Fischenders made a quick and surprising appearance during Q&A! #orms

[Stephen J Maher @sj_maher]

My paper on the Benders' decomposition framework in SCIP has been accepted and now available online. This paper aims to be a guide for future researchers implementing the branch-and-cut approach for Benders' decomposition. https://t.co/foeXn0FGn4

[Martina Fischetti @MartiFischetti]

Quarantine may show a new side of you ;) After 2+ weeks at home alone, I started this YouTube channel of animations for kids. Are magical things happening also in your house? https://t.co/ujremfoxoj
#fun #sapo #kids #stayathome #iorestoacasa

[🤓Fischenders🤓 @Fischenders]

@albertwenger #masks4all #all4masks

[Matteo Fischetti @MFischetti]

@brucefenton @jeremyphoward ... like in the picture below. I know this is just naive, but ... who knows? Maybe someone can elaborate this #HyperVentilator idea

[🤓Fischenders🤓 @Fischenders]

@JeffLinderoth @aghaei_sina @GomezAndres8 @phebe_vayanos

[🤓Fischenders🤓 @Fischenders]

@MFischetti @mluebbecke @MLindahlDK

[🤓Fischenders🤓 @Fischenders]

@nodet @pononomo @dominiqs81 @AndreaOmarT

[Xavier Nodet @nodet]

In their paper, @pononomo, @dominiqs81 and @AndreaOmarT explain how the special ingredients added by the #CPLEX team to their #Benders implementation moved it from 1.5x slower to 5x faster than default MIP! And it's automatic!
https://t.co/pj7qjFut0d
#orms

[Xavier Nodet @nodet]

The presentations made by the #CPLEX development team at #INFORMS2019 are all at https://t.co/1zG5RnDADC. You’ll read about the upcoming 12.10 release, Benders, #MachineLearning, Penalty Variables, infeasible MIPs and the Generic Callback. #orms

[Stephen J Maher @sj_maher]

Checking out how CPLEX does Benders. Nice improvements in version 12.10 presented by Andrea Tramontani.