Search Results for author: Nicos G. Pavlidis

Found 4 papers, 2 papers with code

Weighted Sparse Subspace Representation: A Unified Framework for Subspace Clustering, Constrained Clustering, and Active Learning

1 code implementation8 Jun 2021 Hankui Peng, Nicos G. Pavlidis

Spectral-based subspace clustering methods have proved successful in many challenging applications such as gene sequencing, image recognition, and motion segmentation.

Active Learning Constrained Clustering +1

Subspace Clustering with Active Learning

no code implementations8 Nov 2019 Hankui Peng, Nicos G. Pavlidis

In this paper, we propose an active learning framework for subspace clustering that sequentially queries informative points and updates the subspace model.

Active Learning Clustering +2

Minimum Spectral Connectivity Projection Pursuit

1 code implementation4 Sep 2015 David P. Hofmeyr, Nicos G. Pavlidis, Idris A. Eckley

We study the problem of determining the optimal low dimensional projection for maximising the separability of a binary partition of an unlabelled dataset, as measured by spectral graph theory.

Clustering Dimensionality Reduction

Minimum Density Hyperplanes

no code implementations15 Jul 2015 Nicos G. Pavlidis, David P. Hofmeyr, Sotiris K. Tasoulis

Associating distinct groups of objects (clusters) with contiguous regions of high probability density (high-density clusters), is central to many statistical and machine learning approaches to the classification of unlabelled data.

Classification Clustering +1

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