Automatic identification of the number of clusters in hierarchical clustering

A Karna, K Gibert - Neural Computing and Applications, 2022 - Springer
Hierarchical clustering is one of the most suitable tools to discover the underlying true
structure of a dataset in the case of unsupervised learning where the ground truth is …

A framework for semi-supervised and unsupervised optimal extraction of clusters from hierarchies

RJGB Campello, D Moulavi, A Zimek… - Data Mining and …, 2013 - Springer
We introduce a framework for the optimal extraction of flat clusterings from local cuts through
cluster hierarchies. The extraction of a flat clustering from a cluster tree is formulated as an …

Fusing different information retrieval systems according to query-topics: a study based on correlation in information retrieval systems and TREC topics

A Bigot, C Chrisment, T Dkaki, G Hubert, J Mothe - Information Retrieval, 2011 - Springer
Abstract To evaluate Information Retrieval Systems on their effectiveness, evaluation
programs such as TREC offer a rigorous methodology as well as benchmark collections …

Unsupervised and supervised learning in cascade for petroleum geology

D Ferraretti, G Gamberoni, E Lamma - Expert Systems with Applications, 2012 - Elsevier
Cascade of unsupervised and supervised learning algorithms are suitable in all those
problems where there are large unlabelled input datasets and the underlying data structure …

Integrating clustering and classification techniques: A case study for reservoir facies prediction

D Ferraretti, E Lamma, G Gamberoni, M Febo… - … Technologies in Industry, 2011 - Springer
The need for integration of different data in the understanding and characterization of
reservoirs is continuously growing in petroleum geology. The large amount of data for each …

A modularity-based measure for cluster selection from clustering hierarchies

FAR dos Anjos, JC Gertrudes, J Sander… - Data Mining: 16th …, 2019 - Springer
Extracting a flat solution from a clustering hierarchy, as opposed to deriving it directly from
data using a partitional clustering algorithm, is advantageous as it allows the hierarchical …

An AI tool for the petroleum industry based on image analysis and hierarchical clustering

D Ferraretti, G Gamberoni, E Lamma, R Di Cuia… - … Data Engineering and …, 2009 - Springer
In petroleum geology, exploration and production wells are often analyzed using image
logs, because they provide a visual representation of the borehole surface and they are …

Clustering and classification techniques for blind predictions of reservoir facies

D Ferraretti, E Lamma, G Gamberoni… - AI* IA 2011: Artificial …, 2011 - Springer
The integration of different data in reservoir understanding and characterization is of prime
importance in petroleum geology. The large amount of data for each well and the presence …

[PDF][PDF] di4g: Uno Strumento di Clustering per l'Analisi Integrata di Dati Geologici.

A Piva, G Gamberoni, D Ferraretti, E Lamma - PAI@ AI* IA, 2013 - ceur-ws.org
1 Introduzione di4g (data integrator for geology) è uno strumento sviluppato per l'analisi di
dati geologici, in particolare per la geologia degli idrocarburi. Questa disciplina si occupa di …

[PDF][PDF] Novel health monitoring technologies for the ageing society

MLE ZECCHILLO - 2013 - politesi.polimi.it
Il progressivo invecchiamento della popolazione e la necessità di avere un sistema sanitario
sostenibile e all'avanguardia ha portato ad una domanda di dispositivi medici innovativi in …