Contagion in networks

layer/multiplex nature of the networks involved in

By constructing trade–investment networks and modeling the contagion of systemic risk in trade and investment channels within different countries, we design three immune strategies, namely, Random Immune, Target Immune, and Neighbor Immune, and compare the inhibitory effect of these strategies on the shock contagion of multilayer …Dec 28, 2015 · Contagion in Financial Networks by Paul Glasserman and H. Peyton Young. Published in volume 54, issue 3, pages 779-831 of Journal of Economic Literature, September 2016, Abstract: The recent financial crisis has prompted much new research on the interconnectedness of the modern financial system and...

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Due to the complicated transport and reactive behavior of organic contamination in groundwater, the development of mathematical models to aid field …Feinstein Zachary & El-Masri Fatena, 2017. "The effects of leverage requirements and fire sales on financial contagion via asset liquidation strategies in financial networks," Statistics & Risk Modeling, De Gruyter, vol. 34(3-4), pages 113-139, September.Bardoscia, Marco & Barucca, Paolo & Brinley Codd, Adam & Hill, John, 2017. "The decline of solvency …Abstract The importance of adequately modeling credit risk has once again been highlighted in the recent financial crisis. Defaults tend to cluster around times of economic stress due to poor macro-economic conditions, but also by directly triggering each other through contagion. Although credit default swaps have radically altered the dynamics of …Given ɛ > 0, a defended network (g, d) is ɛ-optimal if for all defended networks (g′, d ′). 2.2. Application: computer network security. We discuss the problem …This paper develops an analytical model of contagion in financial networks with arbitrary structure. We explore how the probability and potential impact of contagion is influenced by aggregate and idiosyncratic shocks, changes in network structure, and asset market liquidity. Our findings suggest that financial systems exhibit a robust-yet ...The pandemic altered many aspects of jobs as well as careers. And the changes in networking closely mirror how workplace trends have evolved in recent years. "We're probably better than 50% back ...Contagion in online social networks (OSN) occurs when users are exposed to information disseminated by other users. Studies of contagion are largely devoted to the spread of viral information and to local neighbor-to-neighbor contagion. However, many contagion events can be non-viral in the sense of being unpopular with low reach size, or global in the sense of being exposed to non-adjacent ...This contribution focuses on the methodology applied in papers that investigate the dynamics of contagion in financial networks using numerical simulations. In these papers, a propagation of losses and defaults in a financial system is modeled as a direct balance-sheet contagion (a.k.a. counterparty contagion), that is the direct …Miritello et al. (2011) use an approach that combines an explicit SIR disease model and a dynamic network to produce a static network that describes the spread of contagion in that network. Their method gives an estimate of the expected outbreak size, as well as the epidemic threshold on that network.Social media are used as main discussion channels by millions of individuals every day. The content individuals produce in daily social-media-based micro-communications, and the emotions therein expressed, may impact the emotional states of others. A recent experiment performed on Facebook hypothesized that emotions spread online, even in absence of non-verbal cues typical of in-person ...“This book is an attempt to crystallize the early results of research that focusses on the basic modelling structure of financial systemic risk in a financial network. … The book will be useful for those working and researching in the areas of systemic risk, financial networks and risk management.” (Anatoliy Swishchuk, zbMATH 1369.91005 ...ST. LOUIS (AP) — The estimated future cost to clean up 19 sites contaminated by nuclear waste from the Cold War era has risen by nearly $1 billion in …Contagion is a process whereby the collapse of a node in a network leads to the collapse of neighboring nodes and thereby sets off a chain reaction in the network. It thus creates a special type of time-dependent network. Such processes are studied.Using these algorithms, we study the spread of contagion in scale-free networks with 1,000 players using millions of Monte Carlo simulations. Our analysis …At that time, an individual’s sentiment contagion system will deviate from the balanced condition under the combined action, and the individuals in the system will go to extremes. 3. Numerical simulation in complex networks. In this section, by simulation we discuss some characteristics of our novel model.Contagion theory is mixed. Results Naive contagion estimates. We estimated social contagion in the exercise behaviours of runners worldwide in a data set that precisely records the geographic locations, social network ties and daily running patterns of B1.1M individuals, who ran B359Mkm in a global social network of runners over 5 years.The presence of complex contagion mechanisms has been assessed in various contexts 27, but largely in online social networks and forums 28,29, thanks to their unique data traceability.Contagion: In economics and finance, a contagion can be explained as a situation where a shock in a particular economy or region spreads out and affects others by way of, say, …Download Citation | Contagion in Financial Networks | The recent financial crisis has prompted much new research on the interconnectedness of the modern financial system and the extent to which it ...Social Contagion is defined as the spread of behaviors, attitudes, and affect through crowds and other types of social aggregates from one member to another. Adolescents are prone to social contagion because they may be especially susceptible to peer influence and social media. In this article, we provide a brief review of the most recent ...Bartering Networks - Bartering networks are more common than you might think in modern life. Learn about modern bartering, bartering networks and other forms of bartering. Advertisement We've seen how the barter system isn't as easy or as p...Adventure sports clubs and networks let you share your passion for adventure. Visit HowStuffWorks to learn about adventure sports clubs and networks. Advertisement Adventure sports clubs and networks have become very popular in recent years...Contagion effects, also known as peer effects or sYou can install a Dish Network satellite system into your home Prediction of contagion dynamics is of relevance for epidemic and social complex networks. Murphy et al. propose a data-driven approach based on deep learning which allows to learn mechanisms ... Here we extend simplicial contagion to time-varying netwo We develop a theoretical framework for the study of epidemic-like social contagion in large scale social systems. We consider the most general setting in which different communication platforms or categories form multiplex networks. Specifically, we propose a contact-based information spreading model, and show that the critical point of …Abstract. This paper studies intertemporal asset pricing in network economies when distress shocks can propagate through the network, similarly to epidemic outbreaks. Two classes of equilibria exist. In the first, idiosyncratic shocks are diversifiable and do not affect valuations; the consumption capital asset pricing model applies. Financial Networks and Contagion. SSRN Electronic Journal, Vo

The study of informational contagion did not originally require the use of an explicit network, but the concept of a network is a natural framework for the study of informational contagion. Two of the earliest studies, Kodres and Pritzker (2002) [KP] and Pavlova and Rigobon (2008) [PR], illustrate the network structure that is implicit in the ... New contagion measures based on theories of copula, heavy-tailed distributions and networks are introduced. The measures are applied to study international stock markets contagion during the Global Financial Crisis 2008. Having declined post-crisis, the contagion risk remains above its pre-crisis level for both advanced and emerging economies.Modeling contagion dynamics of network traffic jams. Consider a network with N directed links. At time t = 0 every link in the network is in the free flow or uncongested regime, F (0) = N and no ...Here, we propose an alternative method for detecting emotional contagion in massive social networks that is based on instrumental variables regression, a technique pioneered in economics [23]. In an experiment we would directly control each user's emotional expression to see what impact it has on their friends' emotional expression.Whether you’re cooking for a crowd or serving yourself, these Food Network recipes are the most popular around. Find your favorite and dig in. This easy and elegant recipe is aCC0mpanied by a flavorful Asian-inspired blend that doubles as a...

Contagions and homophilous diffusion are both typified by correlations between network structure and individual outcomes over time ( 1 – 3, 5 – 11, 17, 21, 22 ). Two empirical patterns have been used to substantiate claims of peer influence and contagion in networks ( i) assortative mixing —correlations of behaviors among linked …Security and privacy are big concerns these days, particularly when it comes to dealing with sensitive information on the internet. Interested in maintaining your anonymity online? That’s where a virtual private network, or VPN, comes in.…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. First, we derive a contagion ripple-spreading network model (CRNM). Possible cause: According to social contagion theory [29, 30], a person's attitudes and behavior c.

In terms of Internet speed, most people agree that faster is always better. If you’re wondering what your network speed is, there are speed tests available on the Internet that enable you to test and measure the speed of your connection.Explosive contagion in SIS epidemics. The evolution of the spreading process depends both on transmission rates and dynamical rules imposed. For concreteness, we start the analysis by employing the exponential synergistic transmission rates (2) for contagion dynamics given by the rules of the SIS epidemic model applied to a population of N individuals.Contagion is defined as a significant increase in cross-market co-movement of asset returns (Dungey et al., Citation 2004; Forbes & Rigobon, Citation 2002). According to Forbes and Rigobon (Citation 2002) and Celik (Citation 2012), the co-movements between financial markets may arise from the contagion or interdependence among financial markets ...

We measure the emotional valence of content the users are exposed to before posting their own tweets. We determine that on average a negative post follows an over-exposure to 4.34% more negative ...2. Social networks and contagion. Formally, a social network is a collection of individuals and the ties between them. The presence of a tie between two indi viduals indicates that the individuals share some kind of a relationship; what types of relationships are encoded by network ties depends on the context. For exam

Explosive Contagion in Networks | Scientific The risk contagion research is carried out from three aspects:guarantee mechanism, partner selection mechanism, and production parameter. The research shows that: (1) Firm size distribution takes on a power-law tail. (2) Guarantee network provides a channel for risk contagion and aggravates risk contagion among firms.In prior research, such propagation of behavior on social networks has been found to exhibit a transition from simple contagion—i.e, based on pairwise interactions—to a complex one—i.e ... Dec 28, 2015 · tion is how network strucIntroduction. The aim of this chapter is to pro Given ɛ > 0, a defended network (g, d) is ɛ-optimal if for all defended networks (g′, d ′). 2.2. Application: computer network security. We discuss the problem … Adventure sports clubs and networks let you share your Using these algorithms, we study the spread of contagion in scale-free networks with 1,000 players using millions of Monte Carlo simulations. Our analysis provides quantitative and qualitative ... 1. Introduction. The interconnectedness of the mIn terms of Internet speed, most people agree that faster Downloadable (with restrictions)! By considering ove Due to the complicated transport and reactive behavior of organic contamination in groundwater, the development of mathematical models to aid field …We measure the emotional valence of content the users are exposed to before posting their own tweets. We determine that on average a negative post follows an over-exposure to 4.34% more negative ... Back to Our Network. Ho Chi Minh City. Location Type: tion is how network structure interacts with other potential sources of contagion. In the run-up to the crisis, leverage levels increased and capital buffers at some banks were extremely thin. Large financial institutions had increased their reliance on short-term Contagion in Financial Networks † Paul Glasserman and H. Peyton Young* This paper applies consolidated banking statistics data from[Distinguishing influence-based contagion from homophily-drivenExplosive Contagion in Networks J. Gó Fig. 1. Simplicial contagion model (SCM). The underlying structure of a social system is made of simplices, representing d-dimensional group interactions ( a ), organized in a simplicial complex ...First, we derive a contagion ripple-spreading network model (CRNM) from the pioneering work of Hu et al. (2011) to reveal the ripple-spreading paths of financial contagion. In the CRNM, we integrate information on the amplifying effect and risk prevention capability of financial markets, market distances, and contagion spreading …