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Università della Svizzera italiana

Hard and soft EM in bayesian network learning from incomplete data

Ruggieri, Andrea ; Stranieri, Francesco ; Stella, Fabio ; Scutari, Marco

In: Algorithms, 2020, vol. 13, no. 12, p. 17

Incomplete data are a common feature in many domains, from clinical trials to industrial applications. Bayesian networks (BNs) are often used in these domains because of their graphical and causal interpretations. BN parameter learning from incomplete data is usually implemented with the Expectation-Maximisation algorithm (EM), which computes the relevant sufficient statistics (“soft EM”) ...

Università della Svizzera italiana

Institutional barriers to participation in EU framework programs : contrasting the Swiss and UK cases

Cavallaro, Marco ; Lepori, Benedetto

In: Scientometrics, 2021, vol. 126, no. 2, p. 1311–1328

The aim of this study was to examine how institutional barriers arising from policy decisions influence the level of participation of third- party countries in European Framework Programs (EU-FPs). To achieve this, we contrasted the effect of EU funding restrictions following Switzerland’s 2014 reclassification as a “third country” in Horizon 2020, and the political uncertainties resulting...

Consortium of Swiss Academic Libraries

The rise and fall of R&D networks

Tomasello, Mario V. ; Napoletano, Mauro ; Garas, Antonios ; Schweitzer, Frank

In: Industrial and Corporate Change, 2017, vol. 26, no. 4, p. 617-646

Consortium of Swiss Academic Libraries

Age and complementarity in scientific collaboration

Krapf, Matthias

In: Empirical Economics, 2015, vol. 49, no. 2, p. 751-781

Université de Fribourg

Ranking game on networks: The evolution of hierarchical society

Zhang, Xin-Jie ; Tanga, Yong ; Xiong, Jason ; Wang, Wei-Jia ; Zhang, Yi-Cheng

In: Physica A: Statistical Mechanics and its Applications, 2020, vol. 540, p. 123140

Interacting with each other, individuals in a population form various social network topologies. Models of evolutionary games on networks provide insight into how the collective behaviors of structured populations are influenced by individual decision making and network topologies. In a hierarchical society, many social resources are allocated according to certain social rankings, such as...

Haute Ecole pédagogique Fribourg

Collaborative online international learning : from a systematic review of literature about barriers to an implementation plan

Alvarez, Lionel ; Steiner, Mariana

In: ASEM Education in a digital world : bridging the continents - connecting the people, 2019, p. 18-29

A university program that allow students to collaborate online with culturally-diverse learners is an opportunity that is currently valued. Collaborative online international learning (COIL) programs have been developed for several years, and previous experiences offer insights about what makes their design and implementation difficult. The systematic literature review presented in this paper...

Université de Fribourg

K-core: Theories and applications

Kong, Yi-Xiu ; Shi, Gui-Yuan ; Wu, Rui-Jie ; Zhang, Yi-Cheng

In: Physics Reports, 2019, vol. 832, p. 1–32

With the rapid development of science and technology, the world is becoming increasingly connected. The following dire need for understanding both the relationships amongst individuals and the global structural characteristics brings forward the study of network sciences and many interdisciplinary subjects in recent years. As a result, it is crucial to have methods and algorithms that help us...

Université de Fribourg

How network topologies impact project alliance performance: evidence from the movie industry

Zhang, Xin-Jie ; Tang, Yong ; Xiong, Jason ; Wang, Wei-Jia ; Zhang, Yi-Cheng

In: Entropy, 2019, vol. 21, no. 9, p. 859

In many industries, partners are interconnected in project alliances that have limited lifespans and clearly-defined boundaries. The transparency of the movie industry provides a unique opportunity to study how alliance network topologies impact the performance of project alliances from the perspectives of social networks and organization theories. In this work, we compiled a massive movie...