Finding compact and well-separated clusters: Clustering using silhouette coefficients

AM Bagirov, RM Aliguliyev, N Sultanova - Pattern Recognition, 2023 - Elsevier
Finding compact and well-separated clusters in data sets is a challenging task. Most
clustering algorithms try to minimize certain clustering objective functions. These functions …

Comparison and application of SOFM, fuzzy c-means and k-means clustering algorithms for natural soil environment regionalization in China

W Zhao, J Ma, Q Liu, J Song, M Tysklind, C Liu… - Environmental …, 2023 - Elsevier
Soil attributes and their environmental drivers exhibit different patterns in different
geographical directions, along with distinct regional characteristics, which may have …

Approaches for finding optimal number of clusters using k-means and agglomerative hierarchical clustering techniques

P Patel, B Sivaiah, R Patel - 2022 international conference on …, 2022 - ieeexplore.ieee.org
Machine learning and pattern recognition both benefit greatly from the study of clustering
techniques. Choosing the right number of clusters in cluster analysis is quite tough. Quality …

Adaptive weighted fuzzy clustering based on intra-cluster data divergence

Z Wu, Y Zhao, W Wang, C Li - Neurocomputing, 2023 - Elsevier
Fuzzy C-means clustering (FCM) approach is an effective method for clustering and has
been successfully applied in numbers of real-world problems. In this paper, we propose an …

Terrestrial nanoparticle contaminants and geospatial optics using the Sentinel-3B OLCI satellite in the Tinto River estuary region of the Iberian Peninsula

A Neckel, MLS Oliveira, LS Maculan, B Adelodun… - Marine Pollution …, 2023 - Elsevier
Abstract The Tinto River is known globally for having a reddish color due to the high
concentration of dissolved metals in its waters. The general objective of this study is to …

Deep clustering framework review using multicriteria evaluation

F Ros, R Riad, S Guillaume - Knowledge-Based Systems, 2024 - Elsevier
The application of clustering has always been an important method for problem-solving. In
the era of big data, most classical clustering methods suffer from the curse of dimensionality …

Sentinel-3B OLCI satellite imagery and advanced electron microscopy of nanoparticle analysis in a marine estuary and watershed: Robust multi-analytics and …

A Neckel, MLS Oliveira, GL Dotto, LS Maculan… - Journal of …, 2022 - Elsevier
Globally, hydrographic basins are routinely contaminated by anthropogenic contaminants
originating from coal mining, swine farming, urban sewage, pesticide use, and other various …

Nanoparticles containing hazardous elements and the spatial optics of the Sentinel-3B OLCI satellite in Amazonian rivers: a potential tool to understand environmental …

LFO Silva, BW Bodah, LP Lozano, MLS Oliveira… - … Science and Pollution …, 2023 - Springer
Abstract The Amazon River is the longest river in the world. The Tapajós River is a tributary
to the Amazon. At their junction, a marked decrease in water quality is evident from negative …

Automatic update strategy for real-time discovery of hidden customer intents in chatbot systems

HD Rebelo, LAF de Oliveira, GM Almeida… - Knowledge-Based …, 2022 - Elsevier
Abstract Model degradation is still a challenge in real-time applications such as chatbot
systems. This work refers to a webchat service of a Brazilian energy utility company, whose …

An effective clustering scheme for high-dimensional data

X He, F He, Y Fan, L Jiang, R Liu, A Maalla - Multimedia Tools and …, 2024 - Springer
While the classical K-means algorithm has been widely used in many fields, it still has some
defects. Therefore, this paper proposes a scheme to improve the clustering quality of K …