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Predictability of complex systems
Physics ReportsThe study of complex systems has attracted widespread attention from researchers in the fields of natural sciences, social sciences, and engineering. Prediction is one of the central issues in this field. Although most related studies have focused on prediction methods, research on the predictability of complex systems has received increasing attention
En Xu, Zhiwen Yu, Tao Zhou
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EPJ Data Science, 2021 Working from a dataset of 118 billion messages running from the start of 2009 to the end of 2019, we identify and explore the relative daily use of over 150 languages on Twitter.
Thayer Alshaabi +6 more
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Complexity, 2022 The U.S. stock market is one of the largest and most complex marketplaces in the global financial system. Over the past several decades, this market has evolved at multiple structural and temporal scales.
Colin M. Van Oort +4 more
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Complexity in quantum systems [PDF]
Physical Review E, 1994 We discuss the behavior of a quantum 1/2 spin coupled to a time dependent magnetic field, which can be quasiperiodic or random. For a quasiperiodic field, the time evolution of the system on a coarse grained space has autocorrelation, which does not decay, and positive topological entropy. The information complexity diverges as a stretched exponential,
CRISANTI, Andrea +4 more
openaire +3 more sources
Kernel-based online learning for real-time voltage control in distribution networks
IET Smart Grid, 2020 This paper presents a new data-driven voltage control approach for distribution networks based on kernel methods. Voltage control becomes more and more challenging due to the increased penetration of Distributed Generation (DG), bidirectional power flow ...
Lisette Cupelli +4 more
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Modeling Complex Systems: A Case Study of Compartmental Models in Epidemiology
Complexity, 2022 Compartmental epidemic models have been widely used for predicting the course of epidemics, from estimating the basic reproduction number to guiding intervention policies.
Alexander F. Siegenfeld +2 more
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Identification of mutations in SARS-CoV-2 PCR primer regions
Scientific Reports, 2022 Due to the constantly increasing number of mutations in the SARS-CoV-2 genome, concerns have emerged over the possibility of decreased diagnostic accuracy of reverse transcription-polymerase chain reaction (RT-PCR), the gold standard diagnostic test for ...
Anikó Mentes +7 more
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Toward Prevention of Adverse Events Using Anticipatory Analytics
Progress in Preventive Medicine, 2020 Introduction:. Electronic Medical Records provide new opportunities for studying the historical condition and dynamics of individual patients and populations to enable new insights that may lead to improved care and treatment.
Joseph Norman, PhD, +5 more
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Sentiment and structure in word co-occurrence networks on Twitter
Applied Network Science, 2022 We explore the relationship between context and happiness scores in political tweets using word co-occurrence networks, where nodes in the network are the words, and the weight of an edge is the number of tweets in the corpus for which the two connected ...
Mikaela Irene Fudolig +4 more
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The sleep loss insult of Spring Daylight Savings in the US is observable in Twitter activity
Journal of Big Data, 2021 Sleep loss has been linked to heart disease, diabetes, cancer, and an increase in accidents, all of which are among the leading causes of death in the United States. Population-scale sleep studies have the potential to advance public health by helping to
Kelsey Linnell +6 more
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