Search Results for author: Shahana Ibrahim

Found 10 papers, 4 papers with code

Deep Learning From Crowdsourced Labels: Coupled Cross-entropy Minimization, Identifiability, and Regularization

1 code implementation5 Jun 2023 Shahana Ibrahim, Tri Nguyen, Xiao Fu

The contribution of this work is twofold: First, performance guarantees of the CCEM criterion are presented.

Under-Counted Tensor Completion with Neural Incorporation of Attributes

1 code implementation5 Jun 2023 Shahana Ibrahim, Xiao Fu, Rebecca Hutchinson, Eugene Seo

Systematic under-counting effects are observed in data collected across many disciplines, e. g., epidemiology and ecology.

Epidemiology

Deep Clustering with Incomplete Noisy Pairwise Annotations: A Geometric Regularization Approach

1 code implementation30 May 2023 Tri Nguyen, Shahana Ibrahim, Xiao Fu

The recent integration of deep learning and pairwise similarity annotation-based constrained clustering -- i. e., $\textit{deep constrained clustering}$ (DCC) -- has proven effective for incorporating weak supervision into massive data clustering: Less than 1% of pair similarity annotations can often substantially enhance the clustering accuracy.

Constrained Clustering Deep Clustering

Crowdsourcing via Annotator Co-occurrence Imputation and Provable Symmetric Nonnegative Matrix Factorization

no code implementations14 Jun 2021 Shahana Ibrahim, Xiao Fu

Unsupervised learning of the Dawid-Skene (D&S) model from noisy, incomplete and crowdsourced annotations has been a long-standing challenge, and is a critical step towards reliably labeling massive data.

Imputation

Stochastic Mirror Descent for Low-Rank Tensor Decomposition Under Non-Euclidean Losses

no code implementations29 Apr 2021 Wenqiang Pu, Shahana Ibrahim, Xiao Fu, Mingyi Hong

This work offers a unified stochastic algorithmic framework for large-scale CPD decomposition under a variety of non-Euclidean loss functions.

Tensor Decomposition

Recovering Joint Probability of Discrete Random Variables from Pairwise Marginals

no code implementations30 Jun 2020 Shahana Ibrahim, Xiao Fu

Recent work has proposed to recover the joint probability mass function (PMF) of an arbitrary number of RVs from three-dimensional marginals, leveraging the algebraic properties of low-rank tensor decomposition and the (unknown) dependence among the RVs.

Tensor Decomposition

On Recoverability of Randomly Compressed Tensors with Low CP Rank

no code implementations8 Jan 2020 Shahana Ibrahim, Xiao Fu, Xingguo Li

Our interest lies in the recoverability properties of compressed tensors under the \textit{canonical polyadic decomposition} (CPD) model.

Compressive Sensing Video Compression

Block-Randomized Stochastic Proximal Gradient for Low-Rank Tensor Factorization

no code implementations16 Jan 2019 Xiao Fu, Shahana Ibrahim, Hoi-To Wai, Cheng Gao, Kejun Huang

In this work, we propose a stochastic optimization framework for large-scale CPD with constraints/regularizations.

Stochastic Optimization

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