Karsten Kreis
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karstenkreis.bsky.social
Karsten Kreis
@karstenkreis.bsky.social
Principal Research Scientist at NVIDIA | Former Physicist | Deep Generative Learning | https://karstenkreis.github.io/

Opinions are my own.
@gembioworkshop.bsky.social
papers:

1⃣ EquiJump: Protein Dynamics Simulation via SO(3)-Equivariant Stochastic Interpolants
arxiv.org/abs/2410.09667 (oral)
(screenshot below)

2⃣ Hierarchical Protein Backbone Generation with Latent and Structure Diffusion
arxiv.org/abs/2504.09374

(4/n)
April 24, 2025 at 8:21 AM
3⃣ Energy-Based Diffusion Language Models for Text Generation
arxiv.org/abs/2410.21357
Posters 2

4⃣ Truncated Consistency Models
arxiv.org/abs/2410.14895
Posters 4
(screenshot below)

(3/n)
April 24, 2025 at 8:19 AM
Main track:

1⃣ Proteina: Scaling Flow-based Protein Structure Generative Models
research.nvidia.com/labs/genair/...
Orals 3B, posters 4
(video below)

2⃣ ProtComposer: Compositional Protein Structure Generation with 3D Ellipsoids
arxiv.org/abs/2503.05025
Orals 2C, posters 3

(2/n)
April 24, 2025 at 8:19 AM
🔥 I'm at ICLR'25 in Singapore this week - happy to chat!

📜 With wonderful co-authors, I'm co-presenting 4 main conference papers and 3
@gembioworkshop.bsky.social papers (gembio.ai), and I contribute to a panel (synthetic-data-iclr.github.io).

🧵 Overview in thread.

(1/n)
April 24, 2025 at 8:17 AM
🔸Proteina is a fantastic collaboration with wonderful colleagues at NVIDIA:

🔥 Tomas Geffner*, @kdidi.bsky.social*, Zuobai Zhang*, Danny Reidenbach, Zhonglin Cao, @jyim.bsky.social , Mario Geiger, @machine.learning.bio, Emine Kucukbenli, @arashv.bsky.social, @karstenkreis.bsky.social* 🔥

(10/n)
March 4, 2025 at 5:17 PM
🔸We also demonstrate LoRA-based fine-tuning on a smaller set of high-quality protein structures from the PDB, and we show that autoguidance, where the model is guided by a weaker version of itself, can be used to boost designability. See our paper for details.

(9/n)
March 4, 2025 at 5:13 PM
🔸Protein structure generation performance is often measured in terms of designability, diversity and novelty. Drawing inspiration from image generation, we explore three complementary metrics that analyze models at the distribution level, providing additional insights.

(8/n)
March 4, 2025 at 5:13 PM
🔸Proteina also outperforms previous models on motif-scaffolding, where a functionally relevant motif is given and the model is tasked with generating a viable supporting scaffold. Below, we show quantitative evaluations for the benchmark introduced by RFDiffusion.

(7/n)
March 4, 2025 at 5:12 PM
🔸Quantitatively, Proteina achieves state-of-the-art designable and diverse protein backbone generation (unconditional or fold class-conditional). In particular at long lengths, it significantly outperforms previous models, which cannot generate proteins at this scale.

(6/n)
March 4, 2025 at 5:12 PM
🔸Proteina uses an efficient and scalable non-equivariant transformer network with up to 400M parameters. We minimize the use of computationally expensive and memory-consuming layers such as triangle attention, allowing Proteina to generate backbones of up to 800 residues.

(5/n)
March 4, 2025 at 5:11 PM
🔸The fold class conditioning provides fine control during generation and allows us to guide with respect to high-level secondary structure content or low-level specific fold classes. The method can also be used to enhance the amount of beta sheets in a controlled manner.

(4/n)
March 4, 2025 at 5:11 PM
🔸We train on synthetic datasets of up to 21M protein structures curated from the AlphaFold Database (left plot). Further, we condition Proteina on hierarchical C.A.T.H protein structure classification labels (right plot), with a tailored classifier-free guidance scheme.

(3/n)
March 4, 2025 at 5:10 PM
🔸Proteina is a novel flow-based protein backbone generative model. It uses an alpha carbon backbone representation, is trained with flow matching, relies on a scalable and efficient transformer network, and offers hierarchical fold class conditioning for enhanced control.

(2/n)
March 4, 2025 at 5:10 PM
📢📢 "Proteina: Scaling Flow-based Protein Structure Generative Models"

#ICLR2025 (Oral Presentation)

🔥 Project page: research.nvidia.com/labs/genair/...
📜 Paper: arxiv.org/abs/2503.00710
🛠️ Code and weights: github.com/NVIDIA-Digit...

🧵Details in thread...

(1/n)
March 4, 2025 at 5:09 PM