activity
20032022
most citedSparse and stable Markowitz portfolios

502 citations · 1.8k across the 42 of their papers we have counts for

collaborators

47 papers

math.FA2022★ 2 cited

Stable phase retrieval for infinite dimensional subspaces of

Robert Calderbank, Ingrid Daubechies, Daniel Freeman +1

Phase retrieval is known to always be unstable when using a frame or continuous frame for an infinite dimensional Hilbert space. We consider a generalization of phase retrieval to…

stat.ML2022

Diffusion Maps : Using the Semigroup Property for Parameter Tuning

Shan Shan, Ingrid Daubechies

Diffusion maps (DM) constitute a classic dimension reduction technique, for data lying on or close to a (relatively) low-dimensional manifold embedded in a much larger dimensional…

cs.CV2022★ 11 cited

Mixed X-Ray Image Separation for Artworks with Concealed Designs

Wei Pu, Jun-Jie Huang, Barak Sober +5

In this paper, we focus on X-ray images of paintings with concealed sub-surface designs (e.g., deriving from reuse of the painting support or revision of a composition by the artis…

cs.LG2021

Neural Network Approximation of Refinable Functions

Ingrid Daubechies, Ronald DeVore, Nadav Dym +6

In the desire to quantify the success of neural networks in deep learning and other applications, there is a great interest in understanding which functions are efficiently approxi…

eess.IV2020

Image Separation with Side Information: A Connected Auto-Encoders Based Approach

Wei Pu, Barak Sober, Nathan Daly +4

X-radiography (X-ray imaging) is a widely used imaging technique in art investigation. It can provide information about the condition of a painting as well as insights into an arti…

math.NA2020★ 3 cited

Approximating the Riemannian Metric from Point Clouds via Manifold Moving Least Squares

Barak Sober, Robert Ravier, Ingrid Daubechies

The approximation of both geodesic distances and shortest paths on point cloud sampled from an embedded submanifold of Euclidean space has been a long-standing challe…