National Research University – Higher School of Economics

About: National Research University – Higher School of Economics is a education organization based out in Moscow, Russia. It is known for research contribution in the topics: Population & Computer science. The organization has 12873 authors who have published 23376 publications receiving 256396 citations.

Social Cohesion and Its Correlates: A Comparison of Western and Asian Societies

Abstract: Trust can either be conceived of as a social glue in its own right, or as a constitutive element of a larger societal syndrome, termed social cohesion. This contribution takes the latter perspective, analyzing social trust and trust in institutions as integral parts of social cohesion more generally. Despite ongoing worries about the state of social cohesion in contemporary societies, surprisingly little is known as to which macro-level conditions actually weaken social cohesion, and which foster it. It remains an open question whether social cohesion is shaped by universal social forces that work similarly in various world regions, or by region-specific ones (the same holds true for outcomes of social cohesion). Against this background, the present paper seeks to advance our understanding of correlates of social cohesion by systematically comparing Western and Asian societies. The empirical analysis is based on the most comprehensive index of social cohesion currently available, the Bertelsmann Social Cohesion Radar. In separate analyses of 34 Western and 22 Asian societies, the authors explore the associations of economic, social, political, and cultural conditions with cohesion, as well as the associations between cohesion and population well-being. The results suggest that while some correlates (such as economic prosperity) can indeed be considered universal, others (e.g. income inequality, political freedom) work differently in Western and Asian societies. The authors link these findings to sociological and cross-cultural psychological theories on Asian modernization and Asian values. The practical conclusion is that not all policy recommendations for strengthening social cohesion can easily travel from one world region to another.

Applying CHAID for logistic regression diagnostics and classification accuracy improvement

Abstract: In this study a CHAID-based approach to detecting classification accuracy heterogeneity across segments of observations is proposed. This helps to solve some important problems, facing a model-builder: (1) How to automatically detect segments in which the model significantly underperforms? and (2) How to incorporate the knowledge about classification accuracy heterogeneity across segments to partition observations in order to achieve better predictive accuracy? The approach was applied to churn data from the UCI Repository of Machine Learning Databases. By splitting the data set into four parts, which are based on the decision tree, and building a separate logistic regression scoring model for each segment we increased the accuracy by more than 7 percentage points on the test sample. Significant increase in recall and precision was also observed. It was shown that different segments may have absolutely different churn predictors. Therefore such a partitioning gives a better insight into factors influencing customer behavior.

Search for Axionlike Particles Produced in e^{+}e^{-} Collisions at Belle II.

Abstract: We present a search for the direct production of a light pseudoscalar a decaying into two photons with the Belle II detector at the SuperKEKB collider. We search for the process e+e-→γa, a→γγ in the mass range 0.2