Narrow search
Showing 1 - 10 of 2,938
Cover Image
On the breakdown behavior of the TCLUST clustering procedure
Ruwet, C.; García-Escudero, L.; Gordaliza, A.; … - In: TEST: An Official Journal of the Spanish Society of … 22 (2013) 3, pp. 466-487
Clustering procedures allowing for general covariance structures of the obtained clusters need some constraints on the … restriction on the “eigenvalues-ratio” of the clusters scatter matrices. In order to try to achieve robustness with respect to …
Persistent link: https://www.econbiz.de/10010994276
Cover Image
Robust time series models with trend and seasonal components
Caivano, Michele; Harvey, Andrew; Luati, Alessandra - In: SERIEs - Journal of the Spanish Economic Association 7 (2016) 1, pp. 99-120
that are easy to implement and deal with outliers by what amounts to a soft form of trimming in the case of t and a soft …
Persistent link: https://www.econbiz.de/10011650315
Cover Image
Robust time series models with trend and seasonal components
Caivano, Michele; Harvey, Andrew C.; Luati, Alessandra - In: SERIEs : Journal of the Spanish Economic Association 7 (2016) 1, pp. 99-120
that are easy to implement and deal with outliers by what amounts to a soft form of trimming in the case of t and a soft …
Persistent link: https://www.econbiz.de/10011458780
Cover Image
A constrained robust proposal for mixture modeling avoiding spurious solutions
García-Escudero, L.; Gordaliza, A.; Mayo-Iscar, A. - In: Advances in Data Analysis and Classification 8 (2014) 1, pp. 27-43
The high prevalence of spurious solutions and the disturbing effect of outlying observations in mixture modeling are well known problems that pose serious difficulties for non-expert practitioners of this kind of models in different applied areas. An approach which combines the use of Trimmed...
Persistent link: https://www.econbiz.de/10010995269
Cover Image
The influence function of the TCLUST robust clustering procedure
Ruwet, C.; García-Escudero, L.; Gordaliza, A.; … - In: Advances in Data Analysis and Classification 6 (2012) 2, pp. 107-130
Persistent link: https://www.econbiz.de/10010995277
Cover Image
Estimating common principal components in high dimensions
Browne, Ryan; McNicholas, Paul - In: Advances in Data Analysis and Classification 8 (2014) 2, pp. 217-226
solutions to this problem and are effective in higher dimensions. We use mixture model-based clustering applications to …
Persistent link: https://www.econbiz.de/10010846120
Cover Image
Mixtures of skew-t factor analyzers
Murray, Paula M.; Browne, Ryan P.; McNicholas, Paul D. - In: Computational Statistics & Data Analysis 77 (2014) C, pp. 326-335
Gaussian and t-distribution analogues, mixtures of skew-t factor analyzers are very well-suited for model-based clustering of … data, giving superior clustering results when compared to a well-established family of Gaussian mixture models. …
Persistent link: https://www.econbiz.de/10010871318
Cover Image
Robust multivariate analysis for mixed-type data : novel algorithm and its practical application in socio-economic research
Grané, Aurea; Salini, Silvia; Verdolini, Elena - In: Socio-economic planning sciences : the international … 73 (2021), pp. 1-8
Persistent link: https://www.econbiz.de/10012496481
Cover Image
The forward search and data visualisation
Atkinson, Anthony; Riani, Marco - In: Computational Statistics 19 (2004) 1, pp. 29-54
Persistent link: https://www.econbiz.de/10005613169
Cover Image
Accuracy and robustness of clustering algorithms for small-size applications in bioinformatics
Minicozzi, Pamela; Rapallo, Fabio; Scalas, Enrico; … - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 25, pp. 6310-6318
The performance (accuracy and robustness) of several clustering algorithms is studied for linearly dependent random … posteriori criterion to choose between two discordant clustering algorithm is presented. …
Persistent link: https://www.econbiz.de/10010589295