Search Results for author: Raviv Raich

Found 9 papers, 0 papers with code

Identifiable Solutions to Foreground Signature Extraction from Hyperspectral Images in an Intimate Mixing Scenario

no code implementations20 Mar 2023 Jarrod Hollis, Raviv Raich, Jinsub Kim, Barak Fishbain, Shai Kendler

The problem of foreground material signature extraction in an intimate (nonlinear) mixing setting is considered.

On Asymptotic Linear Convergence of Projected Gradient Descent for Constrained Least Squares

no code implementations22 Dec 2021 Trung Vu, Raviv Raich

This manuscript presents a unified framework for the local convergence analysis of projected gradient descent in the context of constrained least squares.

Image Restoration Matrix Completion

A Closed-Form Bound on the Asymptotic Linear Convergence of Iterative Methods via Fixed Point Analysis

no code implementations16 Dec 2021 Trung Vu, Raviv Raich

In this letter, we take into account the effect of the first-order approximation error and present a closed-form bound on the convergence in terms of the number of iterations required for the distance between the iterate and the limit point to reach an arbitrarily small fraction of the initial distance.

Active Learning in Incomplete Label Multiple Instance Multiple Label Learning

no code implementations22 Jul 2021 Tam Nguyen, Raviv Raich

Due to the partial availability of bag-level labels, we focus on the incomplete-label MIML setting for the proposed active learning approach.

Active Learning

Exact Linear Convergence Rate Analysis for Low-Rank Symmetric Matrix Completion via Gradient Descent

no code implementations4 Feb 2021 Trung Vu, Raviv Raich

Factorization-based gradient descent is a scalable and efficient algorithm for solving low-rank matrix completion.

Low-Rank Matrix Completion

Weakly-supervised Dictionary Learning

no code implementations5 Feb 2018 Zeyu You, Raviv Raich, Xiaoli Z. Fern, Jinsub Kim

The performance of the proposed model is demonstrated on both synthetic and real-world data.

Denoising Dictionary Learning +3

Dynamic Programming for Instance Annotation in Multi-instance Multi-label Learning

no code implementations14 Nov 2014 Anh T. Pham, Raviv Raich, Xiaoli Z. Fern

To reduce labeling cost, instead of labeling every instance, a group of instances (bag) is labeled by a single bag label.

Activity Recognition Multi-Label Learning

Novelty Detection Under Multi-Instance Multi-Label Framework

no code implementations25 Nov 2013 Qi Lou, Raviv Raich, Forrest Briggs, Xiaoli Z. Fern

Contrary to the common assumption in MIML that each instance in a bag belongs to one of the known classes, in novelty detection, we focus on the scenario where bags may contain novel-class instances.

Novelty Detection Object +1

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