Aleš Žiberna is a Slovene

statistician A statistician is a person who works with theoretical or applied statistics. The profession exists in both the private and public sectors. It is common to combine statistical knowledge with expertise in other subjects, and statisticians may wor ...

, whose specialty is network analysis. His specific research interests include

blockmodeling Blockmodeling is a set or a coherent framework, that is used for analyzing social structure and also for setting procedure(s) for partitioning (clustering) social network's units ( nodes, vertices, actors), based on specific patterns, which form ...

multivariate analysis Multivariate statistics is a subdivision of statistics encompassing the simultaneous observation and analysis of more than one outcome variable. Multivariate statistics concerns understanding the different aims and background of each of the dif ...

and computer intensive methods (e.g.,

computer simulation Computer simulation is the process of mathematical modelling, performed on a computer, which is designed to predict the behaviour of, or the outcome of, a real-world or physical system. The reliability of some mathematical models can be dete ...

s, resampling methods). Currently, he is employed at the Faculty of Social Sciences of the

University of Ljubljana The University of Ljubljana ( sl, Univerza v Ljubljani, , la, Universitas Labacensis), often referred to as UL, is the oldest and largest university in Slovenia. It has approximately 39,000 enrolled students. History Beginnings Although certain ...

, specifically at the Chair of Social Informatics and Methodology, and Centre for Methodology and Informatics.

Work

In 2007, he proposed a solution to the

generalized valued blockmodeling Generalized blockmodeling of valued networks is an approach of the generalized blockmodeling, dealing with valued networks (e.g., non–binary). While the generalized blockmodeling signifies a "formal and integrated approach for the study of the u ...

by introducing homogeneity blockmodeling with the basic idea "that the inconsistency of an empirical block with its ideal block can be measured by within block variability of appropriate values". The newly-formed ideal blocks, which are appropriate for blockmodeling of valued networks, are then presented together with the definitions of their block inconsistencies. He also (in 2007/08) developed an

implicit blockmodeling Implicit blockmodeling is an approach in blockmodeling, similar to a valued and homogeneity blockmodeling, where initially an additional normalization is used and then while specifying the parameter of the relevant link is replaced by the block m ...

approach, based on previous work of Batagelj and Ferligoj (2000). In 2014, he proposed a new approach to the

- blockmodeling linked networks.

Selected bibliography

* ŽIBERNA, Aleš. Generalized blockmodeling of valued networks. Social Networks. rint ed. Jan. 2007, vol. 29, no. 1, str. 105-126. ISSN 0378-8733. * ŽIBERNA, Aleš. Blockmodeling of multilevel networks. Social Networks. rint ed. Oct. 2014, vol. 39, str. 46-61, ilustr. ISSN 0378-8733. DOI: 10.1016/j.socnet.2014.04.002. OBISS.SI-ID 32697949* ŽIBERNA, Aleš. Generalized blockmodeling of sparse networks. Metodološki zvezki. iskana izd. 2013, vol. 10, no. 2, str. 99-119, graf. prikazi. ISSN 1854-0023. http://www.stat-d.si/mz/mz10.1/Ziberna2013.pdf. OBISS.SI-ID 32428893* MATJAŠIČ, Miha, CUGMAS, Marjan, ŽIBERNA, Aleš. Blockmodeling : an R package for generalized blockmodeling. Metodološki zvezki. iskana izd. 2020, vol. 17, no. 2, str. 49-66, ilustr. ISSN 1854-0023. OBISS.SI-ID 53164547

Work

Selected bibliography

References

See also