EVOLUTIONARY DYNAMICS OF COMPETING BOOLEAN NETWORK AGENTS

2007 ◽  
Vol 21 (23n24) ◽  
pp. 4041-4047
Author(s):  
BING-HONG WANG ◽  
BAOSHENG YUAN
Keyword(s):  
Phase Structure ◽  
Boolean Network ◽  
Evolutionary Dynamics ◽  
Random Choice ◽  
Directed Networks ◽  
Connection Number ◽  
Minority Games ◽  
Evolutionary Scheme ◽  
Underlying Network

We investigate the dynamics of network minority games on Kauffman's NK networks (Kauffman nets) and growing directed networks (GDNets). We show that the dynamics and the associated phase structure of the game depend crucially on the structure of the underlying network. The dynamics on GDNets is very stable for all values of the connection number K, in contrast to the dynamics on Kauffman's NK networks, which becomes chaotic when K > Kc = 2. For Kauffman nets with K > 3, the evolutionary scheme has no effect on the dynamics (it remains chaotic) and the performance of the MG resembles that of a random choice game (RCG).

scholarly journals Causal motifs and existence of endogenous cascades in directed networks with application to company defaults

2021 ◽  
Author(s):  
Irena Barjašić ◽  
Hrvoje Štefančić ◽  
Vedrana Pribičević ◽  
Vinko Zlatić
Keyword(s):  
Stochastic Processes ◽  
Time Window ◽  
Directed Networks ◽  
Change Of State ◽  
Underlying Network ◽  
Synthetic Networks

Abstract Motivated by the detection of cascades of defaults in economy, we developed a detection framework for an endogenous spreading based on causal motifs we define in this paper. We assume that the change of state of a vertex can be triggered by an endogenous or an exogenous event, that the underlying network is directed and that times when vertices changed their states are available. In addition to the data of company defaults, we also simulate cascades driven by different stochastic processes on different synthetic networks. We show that some of the smallest motifs can robustly detect endogenous spreading events. Finally, we apply the method to the data of defaults of Croatian companies and observe the time window in which an endogenous cascade was likely happening.

scholarly journals Causal motifs and existence of endogenous cascades in directed networks with application to company defaults

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Irena Barjašić ◽  
Hrvoje Štefančić ◽  
Vedrana Pribičević ◽  
Vinko Zlatić
Keyword(s):  
Stochastic Processes ◽  
Time Window ◽  
Directed Networks ◽  
Change Of State ◽  
Underlying Network ◽  
Network Event ◽  
Synthetic Networks

AbstractMotivated by the problem of detection of cascades of defaults in economy, we developed a detection framework for an endogenous spreading based on causal motifs we define in this paper. We assume that the change of state of a vertex can be triggered either by an endogenous (related to the network) or an exogenous (unrelated to the network) event, that the underlying network is directed and that times when vertices changed their states are available. After simulating default cascades driven by different stochastic processes on different synthetic networks, we show that some of the smallest causal motifs can robustly detect endogenous spreading events. Finally, we apply the method to the data of defaults of Croatian companies and observe the time window in which an endogenous cascade was likely happening.

Beckett's Early Verse and the Modernist Long Poem: A Study of ‘Enueg I’

2019 ◽  
Vol 28 (2) ◽  
pp. 197-213
Author(s):  
Sławomir Studniarz
Keyword(s):  
Long Poem ◽  
The Waste Land ◽  
Waste Land ◽  
Artistic Activity ◽  
Underlying Network ◽  
Experimental Works ◽  
The Cantos ◽  
Semantic Dimension ◽  
Psychological Dimensions

The premise of the article is the contention that Beckett studies have been focused too much on the philosophical, cultural and psychological dimensions of his established canon, at the expense of the artistry. That research on Beckett's work is issue-driven rather than otherwise, and the slender extant body of criticism specifically on his poetic achievements bears no comparison with the massive exploration of the other facets of Beckett's artistic activity. The critical neglect of Beckett's poetry may not be commensurate with the quality of his verse. And it is in the spirit of remedying this oversight that the present article is offered, focusing on ‘Enueg I’, a representative poem from Echo's Bones, which exhibits all the salient features of Beckett's early poetry. It is argued that Beckett's early verse display the twofold influence, that of the transatlantic Modernism of Eliot and Pound, and of French poetry, specifically the visionary and experimental works of Rimbaud, Apollinaire, and the surrealists. Furthermore, the article also demonstrates that ‘Enueg I’ testifies to Beckett's ambition to compose a complex long Modernist poem in the vein of The Waste Land or The Cantos. Beckett's ‘Enueg I’ has much in common with Eliot's exemplary disjunctive Modernist long poem. Both poems are premised on the acutely felt cultural crisis and display the similar tenor in their ending. Finally, they both close with the vision of the doomed and paralyzed world, and the prevalent sense of sterility and dissolution. In the subsequent analysis, which takes up the bulk of the article, careful attention is paid to the patterning of the verbal material, including also the most fundamental level, that of the arrangements of phonemes, with a view to uncovering the underlying network of sound patterns, which contributes decisively to the semantic dimension of the poem.

Evolutionary dynamics modeling of symbolic social network structure equilibrium

2020 ◽  
Vol 17 (10) ◽  
pp. 229-240
Author(s):  
Weijin Jiang ◽  
Sijian Lv ◽  
Yirong Jiang ◽  
Jiahui Chen ◽  
Fang Ye ◽  
...  
Keyword(s):  
Social Network ◽  
Network Structure ◽  
Evolutionary Dynamics ◽  
Dynamics Modeling ◽  
Social Network Structure
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