Scientific Program 2024

Download the Program Schedule here

Download the Book of Abstracts here

27 August 2024

19.00-20.00 Preregistration

28 August 2024

15.15-15.45 Registration

15.45-16.00 Opening

16.00-17.40 Talk Session 1
Models for high dimensional data
Chair: Volodymyr Melnykov (University of Alabama, USA)

Silvia Dallari (Università di Bologna, Italy), Laura Anderlucci, Angela Montanari
Model-based clustering of high dimensional data via random projections
Stefano Antonio Gattone, Roberto Rocci (Sapienza Università di Roma, Italy)
Model based clustering in functional subspaces
Andrew Pope, Garritt L. Page (Brigham Young University, USA)
Functional Clustering Using Derivative Curves
Furio Urso (Università di Palermo, Italy), Antonino Abbruzzo, Marcello Chiodi, Maria Francesca Cracolici
Clickstream data analysis and web user profiling via mixture hidden Markov models

17.40-18.00 Lightning Talk Session 1
Chair: Yingying Zhang (Western Michigan University, USA)

CJ Clarke (University College Dublin, Ireland), Michael Fop
A Mixture of latent position cluster models for model-based clustering of collections of networks
Gabriele d'Angella (Università di Bologna, Italy), Christian Hennig
A clustering method for biological data in the presence of spatial patterns of differentiation
Arno F. Otto (University of Pretoria, South Africa), Johan T. Ferreira, Andriëtte Bekker, Salvatore Daniele Tomarchio
Robust inference and classification via the mean parameterised negative binomial regression model
Francesca Torti (European Commission, Joint Research Center, Italy), Domenico Perrotta, Andrea Cerioli, Lucio Barabesi, Luis Angel Garcia-Escudero, Agustin Mayo-Iscar
Outlier detection under the multivariate Student-t distribution
Luca Scaffidi Domianello (Università di Catania, Italy), Salvatore Ingrassia
On assessing the properties of noise contrastive estimation: a simulation approach

18.00-18.15 Break

18.15-18.35 Lightning Talk Session 2
Chair: Mariaelena Bottazzi Schenone (Sapienza Università di Roma, Italy)

Fabrizio Di Mari (Sapienza Università di Roma, Italy), Roberto Rocci, Roberta De Angelis, Silvia Rossi, Giovanna Tagliabue
Estimation of the non-parametric component in a relative survival cure model with flexible functions of the covariates
Semhar Michael (South Dakota State University, USA), Nathan Meyer, Hossein Moradi, Brandon Varilek, Surachat Ngorsuraches, Patti Brooks
Mixture survival models for a study of end-stage renal disease
Edoardo Redivo (Università di Bologna, Italy), Cinzia Viroli
Bayesian Inference for Mixtures of Quantile-based Factor Models
Jan Vávra, Arnošt Komárek, Bettina Grün, Gertraud Malsiner-Walli (Vienna University of Economics and Business, Austria)
Clustering of mixed-type panel data
Lingge Wang (University of Alabama, USA), Volodymyr Melnykov
Finite mixture modeling in dendrochronology: predicting trees’ locations and time periods based on tree ring sequence data

18.35-19.35 Keynote Talk 1
Looking for elliptical-symmetric shaped clusters
Pietro Coretto (Università di Salerno, Italy)
Chair: Mia Hubert (KU Leuven, Belgium)

19.35-21.00 Welcome Cocktail

29 August 2024

08.30-09.55 Talk Session 2
Clustering approaches for categorical and discrete data
Chair: Christian Hennig (Università di Bologna, Italy)

Silvia D'Angelo (Trinity College Dublin, Ireland), Michael Fop
Data compression for clustering high-dimensional discrete data
Kemmawadee Preedalikit, Daniel Fernández, Ivy Liu, Louise McMillan, Marta Nai Ruscone (Università di Genova, Italy), Roy Costilla
Mixture-based clustering with covariates for ordinal responses
Yingying Zhang (Western Michigan University, USA), Volodymyr Melnykov
Finite mixture modeling and model-based clustering for multivariate categorical sequences

09.55-10.55 Keynote Talk 2
Challenges of cellwise outliers
Peter Rousseeuw (KU Leuven, Belgium)
Chair: Agustín Mayo-Iscar (Universidad de Valladolid, Spain)

10.55-11.25 Coffee Break

11.25-12.50 Talk Session 3
Complex model-based clustering in action
Chair: Michael Fop (University College Dublin, Ireland)

Roberto Di Mari, Matteo Farnè (Università di Bologna, Italy)
endogeNOVA: a latent variable approach to assess endogenous bank performance from ECB supervisory data
Thais Pacheco Menezes (University College Dublin, Ireland), Thomas Brendan Murphy, Michael Fop
An unsupervised record linkage approach using household information to enhance individual matching across different databases
Quoc L. Huynh, Cristina Tortora (San José State University, USA), Antonio Punzo, Meredith L. Wallace
Dealing with mixed-type variables, complex cluster shapes, and local dependencies, in model-based clustering

12.50-13.10 Lightning Talk Session 3
Chair: Zsuzsa Bakk (Leiden University, Netherlands)

Federico Bacchi (Università di Bologna, Italy), Pinuccia Pasqualina Calia, Maria Rosaria Ferrante
The digital skill diffusion in Europe: a multilevel latent class analysis of “ICT usage in households and by individuals” survey
Mara Bernardi, Domenico Perrotta (European Commission, Joint Research Center, Italy), Francesca Torti, Gianluca Morelli, Marco Riani
Extensions of the least trimmed squares for time series (LTSts) with applications to international trade data
Pierdomenico Duttilo (Università di Padova, Italy) , Marina Bertolini, Stefano Antonio Gattone
Clustering electricity market dynamics with hidden Markov models
Przemysław Jaśko (Krakow University of Economics, Poland)
Stochastic dynamical models in a statistical arbitrage strategy on the stock market
Caterina Morelli (Università di Milano-Bicocca, Italy), Simone Boccaletti, Paolo Maranzano, Philipp Otto
Pattern and dynamics of ESG scores of European firms: a spatiotemporal cluster analysis

13.10-14.10 Lunch

14.10-15.10 Keynote Talk 3
Rank-based Bayesian joint variable selection and clustering in the presence of ultra-high-dimensional pools of items
Emilie Eliseussen, Haakon Muggerud, Luca Coraggio, Ida Scheel, Thomas Fleischer, Valeria Vitelli (University of Oslo, Norway)
Chair: Weixin Yao (University of California, USA)

15.10-16.35 Talk Session 4
Robust clustering and applications
Chair: Andrea Cerioli (Università di Parma, Italy)

Claudio Agostinelli (Università di Trento, Italy), Giacomo Francisci, Alicia Nieto-Reyes, Anand N. Vidyashankar
Clustering using statistical local depth functions
Christian Hennig (Università di Bologna, Italy)
On decision making in cluster analysis
Giorgia Zaccaria (Università di Milano-Bicocca, Italy), Luis Angel García-Escudero, Francesca Greselin, Agustín Mayo-Iscar
Cellwise outlier detection in Gaussian mixture models

16.35-17.05 Coffee Break

17.05-18.30 Talk Session 5
Flexible approaches against model misspecification
Chair: Garritt L. Page (Brigham Young University, USA)

Elena Ballante, Silvia Figini, Antonietta Mira (Università della Svizzera Italiana e dell'Insubria, Italy)
A fully non-parametric similarity measure for clustering
Nina Deliu, Brunero Liseo (Sapienza Università di Roma, Italy)
A multivariate copula-based conformal Bayesian framework for doping detection
Yanyuan Ma, Shaoli Wang, Lin Xu, Weixin Yao (University of California, USA)
Semiparametric mixture of regression with unspecified error distributions

20.30 Workshop Dinner (meeting at 19.15, Piazza Verga)

30 August 2024

08.45-10.10 Talk Session 6
Fuzzy clustering
Chair: Roberto Rocci (Sapienza Università di Roma, Italy)

Mariaelena Bottazzi Schenone (Sapienza Università di Roma, Italy), Maurizio Vichi
Advances in fuzzy clustering and dimensionality reduction
Houyem Demni (Università di Cassino e Lazio Meridionale, Italy), Paolo Giordani, Giovanni C. Porzio
Fuzzy k-medoids clustering algorithms for directional data
Lazhar Labiod (Université Paris Cité, France), Mohamed Nadif
Joint fuzzy spectral attributed graph embedding and clustering

10.10-10.35 Lightning Talk Session 4
Chair: Arno F. Otto (University of Pretoria, South Africa)

Giulio Giacomo Cantone (Università di Catania, Italy), Venera Tomaselli, Er-Te Zheng, Paul Nightingale
Similarity-reduced error and uncertainty of classification: what role for large language models?
Cinzia Di Nuzzo (Università di Catania, Italy)
Laplacian embedding and spectral clustering for three-way data
Ewa Genge (University of Economics in Katowice, Poland)
A study of saving practices among older adults in Poland
Mathijs Mol, Barbara Belfi, Zsuzsa Bakk (Leiden University, Netherlands)
Unravelling the skillsets of data scientists: an unsupervised clustering using text mining analysis of Dutch university master
Andrew Simpson (South Dakota State University, USA), Semhar Michael
Clustering singular and non-singular covariance matrices for classification
Tamara G. Vasiljev (Università di Milano-Bicocca, Italy) Lucia Salvioni, Miriam Colombo, Paolo Galli and Francesca Greselin
Computational classification techniques for predicting compound toxicity

10.35-11.05 Coffee Break

11.05-12.05 Keynote Talk 4
Inferences on mixing probabilities and ranking in mixed-membership models
Sohom Bhattacharya, Jianqing Fan (Princeton University, USA), Jikai Hou
Chair: Angela Montanari (Università di Bologna, Italy)

12.05-13.30 Talk Session 7
Models for dimensionality reduction, skew and heavy tails data
Chair: Gertraud Malsiner-Walli (Vienna University of Economics and Business, Austria)

Volodymyr Melnykov (University of Alabama, USA), Aqi Dong, Yingying Zhang, Igor Melnykov
Modeling heterogeneous directional data with heavy tails
David Rodríguez-Vítores (Universidad de Valladolid, Spain)
Wasserstein methods for dimensionality reduction
Mahdi Salehi (University of Neyshabur and University of Pretoria, Iran), Mohammad Arashi, Andriette Bekker
Enhancing skew-normal modeling through kernel density estimation: a semi-parametric framework

13.30-14.30 Lunch

14.30-15.55 Talk Session 8
Robust methods for complex data
Chair: Luis-Angel García Escudero (Universidad de Valladolid, Spain)

Edoardo Fibbi (KU Leuven, Belgium), Domenico Perrotta, Francesca Torti, Stefan Van Aelst, Tim Verdonck
Co-clustering count data with cellwise outliers and an application to trade monitoring
Mia Hubert (KU Leuven, Belgium), Mehdi Hirari
MacroPARAFAC for handling rowwise and cellwise outliers in incomplete multiway data
Valentin Todorov (UNIDO, Austria), Violetta Simonacci, Michele Gallo
Robust SIMCA for classification of three-way data

15.55-16.20 Lightning Talk Session 5
Chair: Thais Pacheco Menezes (University College Dublin, Ireland)

Ultán P. Doherty (Trinity College Dublin, Ireland), Rachel M. McLoughlin, Arthur White
A semi-supervised mixture model with must-link constraints based on minimal cluster descriptions
Yana Melnykov (University of Alabama, USA)
On modeling heavy tails and outliers in finite mixture models
Ana Moreira (University of Minho, Portugal), Susana Faria
Extended Comparisons of Variable Selection Methods in the Context of Mixtures of Linear Regressions Models
Jason Pillay (University of Pretoria, South Africa), Antonio Punzo, Johan T. Ferreira, Andriëtte Bekker
Clustering via scale mixtures of multivariate skew normal distributions with missing data
Hung Tong (San José State University, USA), Cristina Tortora
Robust and flexible model-based clustering of missing data using the R package MixtureMissing
Delene M. van Wyk-de Ridder (University of Pretoria, University of Cape Town, South Africa), Johan T. Ferreira, Priyanka Nagar
Spherical normal modulated (SNM) and contaminated spherical normal mixture (CSNM) models for visualisation and clustering

16.20-16.50 Coffee Break

16.50-17.50 Keynote Talk 5
Understanding uncertainty in Bayesian cluster analysis
Sara Wade (University of Edinburgh, UK), Cecilia Balocchi
Chair: Brunero Liseo (Sapienza Università di Roma, Italy)

17.50-18.00 Closing

Wine Session

18.00-19.30 Wine tours in Sicily
Chair: Mariella Ferrara (L’Archestrato, Catania, Italy)

Wineries, wines and vine varieties:

Agata Santangelo - Tenuta Stagliata