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Showing papers from University of Copenhagen Show all papers

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NeurIPS 2026SpotlightU CopenhagenPrivacy

Optimal Rates for Adaptive Private $k$-PCA

Johanna Düngler, Amartya Sanyal

Paris Poster Session 4, Thu, Dec 10, 5:30 PM–7:30 PM, Paris Poster Hall · Published 2026

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57%Worth a look
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SurvCancel: A Longitudinal Dataset and Benchmark for Dynamic Order Cancellation Prediction in On-Demand Ride-Sharing Systems

Huayang Liu, Mingyu Zheng, Wei Zhang, Yijun Bian and 1 more

Sydney Poster Session 1, Tue, Dec 8, 10:00 AM–1:00 PM, Hall 1-4 · Published 2026

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45%Niche pick
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Looking Under the Streetlight: Evaluation in Generative Molecular Dynamics

Simon Olsson, Frank Noe, Grant Rotskoff, Kresten Lindorff-Larsen

Paris Poster Session 6, Fri, Dec 11, 2:30 PM–4:30 PM, Paris Poster Hall · Published 2026

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45%Niche pick
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Characterizing Learning in Deep Neural Networks using a Tractable Algorithmic Complexity Estimator

Pedram Bakhtiarifard, Sophia Natasha Wilson, Mahmoud H. A. Afifi, Jonathan Wenshøj and 1 more

Sydney Poster Session 1, Tue, Dec 8, 10:00 AM–1:00 PM, Hall 1-4 · Published 2026

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72%Highly rated
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On the Depth of Monotone ReLU Neural Networks and ICNNs

Monotone ReLU networks cannot compute or approximate maximum, ICNNs need depth n for it, and depth-k ICNNs cannot simulate some depth-2 ReLU networks.

Egor Bakaev, Florestan Brunck, Christoph Hertrich, Daniel Reichman and 1 more

Sydney Poster Session 1, Tue, Dec 8, 10:00 AM–1:00 PM, Hall 1-4 · Published 2026

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lenient 1/5
medium 4/10
strict 3/5
80%Must read
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Coarsening Linear Non-Gaussian Causal Models with Cycles

Linear non-Gaussian cyclic models yield recoverable low-dimensional acyclic summaries representing observational equivalence classes, learnable in cubic time with sample complexity bounds.

Francisco Madaleno, Francisco Pereira, Alex Markham

Sydney Poster Session 2, Tue, Dec 8, 5:00 PM–8:00 PM, Hall 1-4 · Published 2026

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AI panel: 12 of 20 reviewers recommend it
lenient 2/5
medium 7/10
strict 3/5
71%Highly rated
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Metropolis-Adjusted Diffusion Models

Metropolis-adjusted Langevin correctors using score-based acceptance probabilities and a two-coin Bernoulli factory reduce diffusion model sampling bias and improve FID.

Kevin H. Lam, Tyler Farghly, Christopher Williams, Jun Yang and 2 more

Sydney Poster Session 1, Tue, Dec 8, 10:00 AM–1:00 PM, Hall 1-4 · Published 2026

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AI panel: 6 of 20 reviewers recommend it
lenient 2/5
medium 4/10
strict 0/5
70%Highly rated
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Neural Backward Filtering Forward Guiding

NBFFG uses a proxy linear-Gaussian backward filter and neural residual to guide inference in nonlinear continuous tree processes, reducing training cost to path-length dependence and outperforming baselines in phylogenetic reconstruction.

Gefan Yang, Frank van der Meulen, Stefan Sommer

Sydney Poster Session 1, Tue, Dec 8, 10:00 AM–1:00 PM, Hall 1-4 · Published 2026

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AI panel: 5 of 20 reviewers recommend it
lenient 3/5
medium 2/10
strict 0/5
76%Highly rated
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Not Another Text Benchmark: Putting the “Visual" Back in Visual Question Answering for Large Video Models

Three visual benchmarks for video understanding expose large video model weaknesses when reasoning through visual queries instead of text options.

Rwiddhi Chakraborty, Yinong O Wang, Cheng Zhang, Fan Bai and 5 more

Paris Poster Session 5, Fri, Dec 11, 11:30 AM–1:30 PM, Paris Poster Hall · Published 2026

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AI panel: 10 of 20 reviewers recommend it
lenient 4/5
medium 5/10
strict 1/5
80%Must read
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Stitched Value Model for Diffusion Alignment

StitchVM stitches pretrained pixel-space reward models onto frozen diffusion backbones to build accurate noisy-latent value functions for efficient diffusion alignment, accelerating DPS 3.2× and DiffusionNFT 2.3×.

Hyojun Go, Hyungjin Chung, Prune Truong, Goutam Bhat and 7 more

Sydney Poster Session 3, Wed, Dec 9, 10:00 AM–1:00 PM, Hall 1-4 · Published 2026 · ▲ 10 on Hugging Face

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AI panel: 12 of 20 reviewers recommend it
lenient 5/5
medium 7/10
strict 0/5
83%Must read
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Lumberjack: Better Differentially Private Random Forests through Heavy Hitter Detection in Trees

Lumberjack improves differentially private random forests via heavy hitter pruning of deep trees, achieving state-of-the-art privacy-utility trade-offs.

Christian J Lebeda, David Erb, Tudor Cebere, Aurélien Bellet

Sydney Poster Session 4, Wed, Dec 9, 5:00 PM–8:00 PM, Hall 1-4 · Published 2026

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13/20 AI panelreviewers recommend it

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AI panel: 13 of 20 reviewers recommend it
lenient 5/5
medium 7/10
strict 1/5
74%Highly rated
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A Topological Sorting Criterion for Random Causal Directed Acyclic Graphs

In randomly ordered DAGs, relative counts increase monotonically along causal order, enabling recovery via sorting and yielding singular equivalence classes.

Alexander Reisach, Antoine Chambaz, Gilles Blanchard, Sebastian Weichwald

Paris Poster Session 5, Fri, Dec 11, 11:30 AM–1:30 PM, Paris Poster Hall · Published 2026

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9/20 AI panelreviewers recommend it

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AI panel: 9 of 20 reviewers recommend it
lenient 3/5
medium 5/10
strict 1/5
71%Highly rated
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Privacy by Postprocessing the Discrete Laplace Mechanism

Discrete Laplace post-processing yields unbiased subexponential estimators and simulates Laplace and Staircase mechanisms, outperforming them for discrete data.

Quentin Hillebrand, Jacob Imola, Rasmus Pagh, Sia Sejer

Paris Poster Session 2, Wed, Dec 9, 5:00 PM–7:00 PM, Paris Poster Hall · Published 2026

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7/20 AI panelreviewers recommend it

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AI panel: 7 of 20 reviewers recommend it
lenient 2/5
medium 3/10
strict 2/5