Search Results for author: Nina Miolane

Found 29 papers, 15 papers with code

A General Framework for Robust G-Invariance in G-Equivariant Networks

2 code implementations NeurIPS 2023 Sophia Sanborn, Nina Miolane

We introduce a general method for achieving robust group-invariance in group-equivariant convolutional neural networks ($G$-CNNs), which we call the $G$-triple-correlation ($G$-TC) layer.

Identifying Interpretable Visual Features in Artificial and Biological Neural Systems

no code implementations17 Oct 2023 David Klindt, Sophia Sanborn, Francisco Acosta, Frédéric Poitevin, Nina Miolane

Single neurons in neural networks are often interpretable in that they represent individual, intuitively meaningful features.

Disentanglement

Geodesic Regression Characterizes 3D Shape Changes in the Female Brain During Menstruation

1 code implementation28 Sep 2023 Adele Myers, Caitlin Taylor, Emily Jacobs, Nina Miolane

We seek to investigate this connection by developing tools that quantify 3D shape changes that occur in the brain during sex hormone fluctuations.

Hippocampus regression

CryoChains: Heterogeneous Reconstruction of Molecular Assembly of Semi-flexible Chains from Cryo-EM Images

no code implementations12 Jun 2023 Bongjin Koo, Julien Martel, Ariana Peck, Axel Levy, Frédéric Poitevin, Nina Miolane

Cryogenic electron microscopy (cryo-EM) has transformed structural biology by allowing to reconstruct 3D biomolecular structures up to near-atomic resolution.

3D Reconstruction Cryogenic Electron Microscopy (cryo-EM)

Architectures of Topological Deep Learning: A Survey of Message-Passing Topological Neural Networks

4 code implementations20 Apr 2023 Mathilde Papillon, Sophia Sanborn, Mustafa Hajij, Nina Miolane

The natural world is full of complex systems characterized by intricate relations between their components: from social interactions between individuals in a social network to electrostatic interactions between atoms in a protein.

Quantifying Extrinsic Curvature in Neural Manifolds

1 code implementation20 Dec 2022 Francisco Acosta, Sophia Sanborn, Khanh Dao Duc, Manu Madhav, Nina Miolane

The neural manifold hypothesis postulates that the activity of a neural population forms a low-dimensional manifold whose structure reflects that of the encoded task variables.

Dimensionality Reduction Topological Data Analysis

Parametric information geometry with the package Geomstats

no code implementations21 Nov 2022 Alice Le Brigant, Jules Deschamps, Antoine Collas, Nina Miolane

We introduce the information geometry module of the Python package Geomstats.

Testing geometric representation hypotheses from simulated place cell recordings

1 code implementation16 Nov 2022 Thibault Niederhauser, Adam Lester, Nina Miolane, Khanh Dao Duc, Manu S. Madhav

Hippocampal place cells can encode spatial locations of an animal in physical or task-relevant spaces.

Regression-Based Elastic Metric Learning on Shape Spaces of Elastic Curves

1 code implementation4 Oct 2022 Adele Myers, Nina Miolane

We propose a metric learning paradigm, Regression-based Elastic Metric Learning (REML), which optimizes the elastic metric for geodesic regression on the manifold of discrete curves.

Metric Learning regression

Intentional Choreography with Semi-Supervised Recurrent VAEs

no code implementations20 Sep 2022 Mathilde Papillon, Mariel Pettee, Nina Miolane

We summarize the model and results of PirouNet, a semi-supervised recurrent variational autoencoder.

Differentially Private Fréchet Mean on the Manifold of Symmetric Positive Definite (SPD) Matrices with log-Euclidean Metric

no code implementations8 Aug 2022 Saiteja Utpala, Praneeth Vepakomma, Nina Miolane

In that spirit, the only geometric statistical query for which a differential privacy mechanism has been developed, so far, is for the release of the sample Fr\'echet mean: the \emph{Riemannian Laplace mechanism} was recently proposed to privatize the Fr\'echet mean on complete Riemannian manifolds.

Defining an action of SO(d)-rotations on images generated by projections of d-dimensional objects: Applications to pose inference with Geometric VAEs

no code implementations23 Jul 2022 Nicolas Legendre, Khanh Dao Duc, Nina Miolane

Recent advances in variational autoencoders (VAEs) have enabled learning latent manifolds as compact Lie groups, such as $SO(d)$.

PirouNet: Creating Dance through Artist-Centric Deep Learning

1 code implementation21 Jul 2022 Mathilde Papillon, Mariel Pettee, Nina Miolane

Using Artificial Intelligence (AI) to create dance choreography with intention is still at an early stage.

Topological Deep Learning: Going Beyond Graph Data

3 code implementations1 Jun 2022 Mustafa Hajij, Ghada Zamzmi, Theodore Papamarkou, Nina Miolane, Aldo Guzmán-Sáenz, Karthikeyan Natesan Ramamurthy, Tolga Birdal, Tamal K. Dey, Soham Mukherjee, Shreyas N. Samaga, Neal Livesay, Robin Walters, Paul Rosen, Michael T. Schaub

Topological deep learning is a rapidly growing field that pertains to the development of deep learning models for data supported on topological domains such as simplicial complexes, cell complexes, and hypergraphs, which generalize many domains encountered in scientific computations.

Graph Learning

CryoAI: Amortized Inference of Poses for Ab Initio Reconstruction of 3D Molecular Volumes from Real Cryo-EM Images

1 code implementation15 Mar 2022 Axel Levy, Frédéric Poitevin, Julien Martel, Youssef Nashed, Ariana Peck, Nina Miolane, Daniel Ratner, Mike Dunne, Gordon Wetzstein

We introduce cryoAI, an ab initio reconstruction algorithm for homogeneous conformations that uses direct gradient-based optimization of particle poses and the electron scattering potential from single-particle cryo-EM data.

Computational Efficiency

Deep Generative Modeling for Volume Reconstruction in Cryo-Electron Microscopy

no code implementations8 Jan 2022 Claire Donnat, Axel Levy, Frederic Poitevin, Ellen Zhong, Nina Miolane

Recent breakthroughs in high-resolution imaging of biomolecules in solution with cryo-electron microscopy (cryo-EM) have unlocked new doors for the reconstruction of molecular volumes, thereby promising further advances in biology, chemistry, and pharmacological research.

Riemannian Functional Map Synchronization for Probabilistic Partial Correspondence in Shape Networks

no code implementations29 Nov 2021 Faria Huq, Adrish Dey, Sahra Yusuf, Dena Bazazian, Tolga Birdal, Nina Miolane

Our experiments demonstrate that constraining the synchronization on the Riemannian manifold $SO(n)$ improves the estimation of the functional maps, while our RLFM sampler provides for the first time an uncertainty quantification of the results.

Graph Matching Uncertainty Quantification

A Bayesian Hierarchical Network for Combining Heterogeneous Data Sources in Medical Diagnoses

no code implementations27 Jul 2020 Claire Donnat, Nina Miolane, Frederick de St Pierre Bunbury, Jack Kreindler

Computer-Aided Diagnosis has shown stellar performance in providing accurate medical diagnoses across multiple testing modalities (medical images, electrophysiological signals, etc.).

Applications

Geomstats: A Python Package for Riemannian Geometry in Machine Learning

1 code implementation ICLR 2019 Nina Miolane, Alice Le Brigant, Johan Mathe, Benjamin Hou, Nicolas Guigui, Yann Thanwerdas, Stefan Heyder, Olivier Peltre, Niklas Koep, Hadi Zaatiti, Hatem Hajri, Yann Cabanes, Thomas Gerald, Paul Chauchat, Christian Shewmake, Bernhard Kainz, Claire Donnat, Susan Holmes, Xavier Pennec

We introduce Geomstats, an open-source Python toolbox for computations and statistics on nonlinear manifolds, such as hyperbolic spaces, spaces of symmetric positive definite matrices, Lie groups of transformations, and many more.

BIG-bench Machine Learning Clustering +2

Estimation of Orientation and Camera Parameters from Cryo-Electron Microscopy Images with Variational Autoencoders and Generative Adversarial Networks

no code implementations19 Nov 2019 Nina Miolane, Frédéric Poitevin, Yee-Ting Li, Susan Holmes

As such, it opens the door to geometric approaches for unsupervised estimations of orientations and camera parameters, making possible fast cryo-EM biomolecule reconstruction.

PVNet: A LRCN Architecture for Spatio-Temporal Photovoltaic PowerForecasting from Numerical Weather Prediction

1 code implementation4 Feb 2019 Johan Mathe, Nina Miolane, Nicolas Sebastien, Jeremie Lequeux

In this paper, we introduce a Long-Term Recurrent Convolutional Network using Numerical Weather Predictions (NWP) to predict, in turn, PV production in the 24-hour and 48-hour forecast horizons.

geomstats: a Python Package for Riemannian Geometry in Machine Learning

2 code implementations ICLR 2019 Nina Miolane, Johan Mathe, Claire Donnat, Mikael Jorda, Xavier Pennec

This paper also presents a review of manifolds in machine learning and an overview of the geomstats package with examples demonstrating its use for efficient and user-friendly Riemannian geometry.

BIG-bench Machine Learning Riemannian optimization

Template shape estimation: correcting an asymptotic bias

no code implementations6 Sep 2016 Nina Miolane, Susan Holmes, Xavier Pennec

We use tools from geometric statistics to analyze the usual estimation procedure of a template shape.

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