A survey on nature inspired metaheuristic algorithms for partitional clustering

SJ Nanda, G Panda - Swarm and Evolutionary computation, 2014 - Elsevier
The partitional clustering concept started with K-means algorithm which was published in
1957. Since then many classical partitional clustering algorithms have been reported based …

[PDF][PDF] Ant-based clustering algorithms: A brief survey

OAM Jafar, R Sivakumar - International journal of computer theory …, 2010 - academia.edu
Ant-based clustering is a biologically inspired data clustering technique. Clustering task
aims at the unsupervised classification of patterns in different groups. Clustering problem …

Bankruptcy visualization and prediction using neural networks: A study of US commercial banks

FJL Iturriaga, IP Sanz - Expert Systems with applications, 2015 - Elsevier
We develop a model of neural networks to study the bankruptcy of US banks, taking into
account the specific features of the recent financial crisis. We combine multilayer …

Predicting public corruption with neural networks: An analysis of spanish provinces

FJ López-Iturriaga, IP Sanz - Social Indicators Research, 2018 - Springer
We contend that corruption must be detected as soon as possible so that corrective and
preventive measures may be taken. Thus, we develop an early warning system based on a …

A survey: hybrid evolutionary algorithms for cluster analysis

MJ Abul Hasan, S Ramakrishnan - Artificial Intelligence Review, 2011 - Springer
Clustering is a popular data analysis and data mining technique. It is the unsupervised
classification of patterns into groups. Many algorithms for large data sets have been …

Colour quantization with Ant-tree

ML Pérez-Delgado - Applied Soft Computing, 2015 - Elsevier
Ant-tree is a clustering algorithm inspired by biological ants. This paper defines a variant of
such algorithm to perform colour quantization. Some of the features of the basic Ant-tree …

Evaluation of internal validity measures in short-text corpora

D Ingaramo, D Pinto, P Rosso, M Errecalde - International Conference on …, 2008 - Springer
Short texts clustering is one of the most difficult tasks in natural language processing due to
the low frequencies of the document terms. We are interested in analysing these kind of …

Self-organizing maps as a tool to compare financial macroeconomic imbalances: The European, Spanish and German case

FJL Iturriaga, IP Sanz - The Spanish Review of Financial Economics, 2013 - Elsevier
The economic recession in the European countries during the current financial crisis and the
widespread worsening of the financial situation have resulted in wide macroeconomic …

Systemic risk measurement in banking using self-organizing maps

JW Kolari, IP Sanz - Journal of Banking Regulation, 2017 - Springer
This paper utilizes neural network map** technology to assess the dynamic nature of
systemic risk over time in the banking industry. We combine the nonparametric method of …

Measuring systemic risk in the US Banking system

JW Kolari, FJ López-Iturriaga, IP Sanz - Economic Modelling, 2020 - Elsevier
Severe financial crises have periodically battered global economies in recent decades
(Laeven and Valencia, 2012). Crisis periods manifest waves of bank insolvencies, declines …