Search Results for author: Georgios Vardakas

Found 4 papers, 2 papers with code

Deep Clustering Using the Soft Silhouette Score: Towards Compact and Well-Separated Clusters

no code implementations1 Feb 2024 Georgios Vardakas, Ioannis Papakostas, Aristidis Likas

Soft silhouette rewards compact and distinctly separated clustering solutions like the conventional silhouette coefficient.

Clustering Deep Clustering

Silhouette Aggregation: From Micro to Macro

no code implementations11 Jan 2024 Georgios Vardakas, John Pavlopoulos, Aristidis Likas

Silhouette coefficient is an established internal clustering evaluation measure that produces a score per data point, assessing the quality of its clustering assignment.

Clustering

UniForCE: The Unimodality Forest Method for Clustering and Estimation of the Number of Clusters

1 code implementation18 Dec 2023 Georgios Vardakas, Argyris Kalogeratos, Aristidis Likas

In this work, we focus on the concept of unimodality and propose a flexible cluster definition called locally unimodal cluster.

Clustering

Global $k$-means$++$: an effective relaxation of the global $k$-means clustering algorithm

1 code implementation22 Nov 2022 Georgios Vardakas, Aristidis Likas

The global $k$-means is a deterministic algorithm proposed to tackle the random initialization problem of k-means but its well-known that requires high computational cost.

Clustering

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