Search Results for author: Panagiotis A. Traganitis

Found 8 papers, 0 papers with code

Detecting adversaries in Crowdsourcing

no code implementations7 Oct 2021 Panagiotis A. Traganitis, Georgios B. Giannakis

Despite its successes in various machine learning and data science tasks, crowdsourcing can be susceptible to attacks from dedicated adversaries.

Bayesian Crowdsourcing with Constraints

no code implementations20 Dec 2020 Panagiotis A. Traganitis, Georgios B. Giannakis

Crowdsourcing has emerged as a powerful paradigm for efficiently labeling large datasets and performing various learning tasks, by leveraging crowds of human annotators.

Variational Inference

Unsupervised Ensemble Classification with Sequential and Networked Data

no code implementations22 Jun 2019 Panagiotis A. Traganitis, Georgios B. Giannakis

data, the present work introduces an unsupervised scheme for learning from ensembles of classifiers in the presence of data dependencies.

Classification Ensemble Learning +1

Nonlinear Dimensionality Reduction on Graphs

no code implementations29 Jan 2018 Yanning Shen, Panagiotis A. Traganitis, Georgios B. Giannakis

The novel framework encompasses most of the existing dimensionality reduction methods, but it is also capable of capturing and preserving possibly nonlinear correlations that are ignored by linear methods.

Dimensionality Reduction Time Series +1

Blind Multiclass Ensemble Classification

no code implementations8 Dec 2017 Panagiotis A. Traganitis, Alba Pagès-Zamora, Georgios B. Giannakis

The rising interest in pattern recognition and data analytics has spurred the development of innovative machine learning algorithms and tools.

Classification Ensemble Learning +1

Sketched Subspace Clustering

no code implementations22 Jul 2017 Panagiotis A. Traganitis, Georgios B. Giannakis

The immense amount of daily generated and communicated data presents unique challenges in their processing.

Clustering Dimensionality Reduction

Large-scale subspace clustering using sketching and validation

no code implementations6 Oct 2015 Panagiotis A. Traganitis, Konstantinos Slavakis, Georgios B. Giannakis

At the heart of SkeVa-SC lies a randomized scheme for approximating the underlying probability density function of the observed data by kernel smoothing arguments.

Clustering

Sketch and Validate for Big Data Clustering

no code implementations22 Jan 2015 Panagiotis A. Traganitis, Konstantinos Slavakis, Georgios B. Giannakis

In response to the need for learning tools tuned to big data analytics, the present paper introduces a framework for efficient clustering of huge sets of (possibly high-dimensional) data.

Clustering Computational Efficiency

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