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Nicolas Keriven

@nicolaskeriven.bsky.social

240 followers 57 following 73 posts

CNRS researcher. Hates genAI with passion. Food and music 🎹 https://linktr.ee/bluecurlmusic

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Nicolas Keriven @nicolaskeriven.bsky.social · Aug 5

I'm BEYOND THRILLED to tell you that our first original song is now available on all platforms!

Plz share if you like it 🙏🏼🙏🏼😊

Cheers

1 1 4

Nicolas Keriven @nicolaskeriven.bsky.social · Aug 7

Nicolas Keriven @nicolaskeriven.bsky.social · Aug 6

Here you go good sir :)

distrokid.com/hyperfollow/...

Horizon by Blue Curl

Stream and Save Horizon - Distributed by DistroKid

distrokid.com

Nicolas Keriven @nicolaskeriven.bsky.social · Aug 5

I'm BEYOND THRILLED to tell you that our first original song is now available on all platforms!

Plz share if you like it 🙏🏼🙏🏼😊

Cheers

1 1 4

Nicolas Keriven @nicolaskeriven.bsky.social · Jul 29

New cover! A fun and funky OST

youtu.be/mupu15xDCuk

RESCUE GIRL (Mighty Switch Force 2 OST) - Piano Cover with MIDI file

YouTube video by NK piano

youtu.be

Nicolas Keriven @nicolaskeriven.bsky.social · Jul 6

New cover! We continue the third album, with a bit of stompbox on the chorus. Cheers!

youtu.be/jlKAQjlnpEg

WHAT IF - Coldplay Piano Cover 023 (with MIDI)

YouTube video by NK piano

youtu.be

Nicolas Keriven @nicolaskeriven.bsky.social · Jun 20

New cover with Blue Curl! Take it with me is an astoundingly beautiful love song by legendary songwriter Tow Waits. We've been playing this one since the very first gig!

youtu.be/qwa95TBJw4Q

TAKE IT WITH ME (Tom Waits) - Blue Curl cover

YouTube video by Blue Curl

youtu.be

Nicolas Keriven @nicolaskeriven.bsky.social · Jun 12

Some more chill piano improv for you :)

youtu.be/uhjG4Sxa9Q8

Piano Chill 04 - Improvisation (with MIDI file)

YouTube video by NK piano

youtu.be

Nicolas Keriven @nicolaskeriven.bsky.social · Jun 6

New cover!

AURORA is one of my fav artist, the river is the absolute banger that opens the album A Different Kind of Human. Here is a chill piano cover. Hope you enjoy!

youtu.be/4fTCr__hWJQ

THE RIVER (AURORA) - Piano Cover

YouTube video by NK piano

youtu.be

Nicolas Keriven @nicolaskeriven.bsky.social · May 27

Coldplay 022 Square One
Let's start the third album !

youtu.be/RoTHZ5dZ9QA

SQUARE ONE - Coldplay Piano Cover 022 (with MIDI)

YouTube video by NK piano

youtu.be

Nicolas Keriven @nicolaskeriven.bsky.social · May 23

Colon, question mark, ticking all the boxes

Nicolas Keriven @nicolaskeriven.bsky.social · May 23

Also note that we limit ourselves to vanilla GNNs: no skip connections, normalization, etc classical anti-oversmoothing strategies. That's for the future!

7/7

Nicolas Keriven @nicolaskeriven.bsky.social · May 23

Note that, while many optimization results are adapted from MLP to GNNs, here this is *specific* to GNNs: we show that this does not happen for MLPs.

6/7

Nicolas Keriven @nicolaskeriven.bsky.social · May 23

...and that's bad! As soon as the last layer is trained (that happens immediately!), this average vanishes. The entire GNN is quickly stuck in a terrible near-critical point!
(*at every layers*, due to further mechanisms).

That's the main result of this paper.

5/7

Nicolas Keriven @nicolaskeriven.bsky.social · May 23

...the "oversmoothing" of the backward signal is very particular: *when the forward is oversmoothed*, the updates to the backward are almost "linear-GNN" with no non-linearity.

So we *can* compute its oversmoothed limit! It is the **average** of the prediction error...

4/7

Nicolas Keriven @nicolaskeriven.bsky.social · May 23

... but at the *middle* layers! Due to the non-linearity, it oversmoothes *when the forward is also oversmoothed* 😲

Why is it bad for training? Well...

3/7

Nicolas Keriven @nicolaskeriven.bsky.social · May 23

The gradients are formed of two parts: the forward signal, and the backward "signal", initialized at the prediction error at the output then backpropagated.

Like the forward, the backward is multiplied by the graph matrix, so it will oversmooth...

2/7

Nicolas Keriven @nicolaskeriven.bsky.social · May 23

New preprint! 🤓

"Backward Oversmoothing: why is it hard to train deep Graph Neural Networks?"

GNNs could learn to anti-oversmooth. But they generally don't. Why is that? We uncover many interesting stuff 🤔 1/7

arxiv.org/abs/2505.16736

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Nicolas Keriven @nicolaskeriven.bsky.social · May 22

New cover ! A sweet song by the mighty Pomme

youtu.be/vnZpxgWv5-E

JANE & JOHN (Pomme) - Blue Curl cover

YouTube video by Blue Curl

youtu.be

Reposted by Nicolas Keriven

Docteur Bagarre @docteurbagarre.bsky.social · May 12

Je sais pas si ça servira à quelque chose, mais je partage ici la réponse de John Tolan, l'un des pilotes du projet ERC sur le Coran européen, à propos de la polémique et des réactions sur le projet de recherche en question.

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Nicolas Keriven @nicolaskeriven.bsky.social · May 5

New cover! Like everyone I'm a bit obsessed with Expedition 33 right now, here is my version of the main track of the incredible OST :)

Cheers!

youtu.be/2aEGaOojEKA?...

LUMIERE (Clair-Obscur: Expedition 33) - Piano Cover with MIDI file

YouTube video by NK piano

youtu.be

Nicolas Keriven @nicolaskeriven.bsky.social · May 3

Hello! A small excerpt from our last rehearsal. Too Fast is a fantastic song by Camélia Jordana with a minimalist instrumentation. Hope you enjoy! :)

youtu.be/z7mjcU9tb_o

TOO FAST (Camélia Jordana) - Blue Curl cover

YouTube video by Blue Curl

youtu.be

Nicolas Keriven @nicolaskeriven.bsky.social · Apr 25

Blue in Green has got to be one of the greatest jazz standard of all time, by the greatest jazz pianist, on the greatest jazz album. Definitely a fav of mine. Here is my humble, chillest version.

youtu.be/JjkUdIgW6CQ

BLUE IN GREEN (Bill Evans) - Jazz Standards 003 (with MIDI)

YouTube video by NK piano

youtu.be

Nicolas Keriven @nicolaskeriven.bsky.social · Apr 23

Si vous passez en Bretagne, prochain concert avec Blue Curl le 24 mai !

En extérieur (abrité, c'est la Bretagne) avec buvette et food truck, viendez ça va être chouette !

Reposted by Nicolas Keriven

Ouest-France @ouest-france.fr · Apr 16

Le directeur de la plateforme nous annonce une forte augmentation des chansons générées par l’IA. « Ces contenus sont désormais clairement signalés aux utilisateurs et sortent de l’algorithme », complète-t-il, se réjouissant que les auditeurs préfèrent les « vrais » artistes.

INFO OUEST-FRANCE. « Deezer : 30 000 titres générés par IA arrivent chaque jour, 18 % des contenus »

Le directeur de la plateforme de streaming, Alexis Lanternier, annonce à « Ouest-France » une forte augmentation des chansons générées par l’Intelligence artificielle. « Ces contenus, que nous repéron...

www.ouest-france.fr

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Nicolas Keriven @nicolaskeriven.bsky.social · Apr 16

Playlist for my covers for the full second album of Coldplay!
Remember, we aim to cover *everything*

www.youtube.com/playlist?lis...

Coldplay - A Rush of Blood to the Head (Full Album) - Piano Cover - YouTube

All my covers for Coldplay's second album, in the original order.