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Some Inquiries to Spontaneous Opinions: A case with Twitter in Indonesia

Maulana, Ardian; Situngkir, Hokky - 2010

The paper discusses opportunities to utilize the series of micro-blogs as provided by the Twitter in observation of opinion dynamics. The spontaneity of tweets is more, as the service is attached more to the mobile communications. The extraction of information in the series of tweets is...

Persistent link: https://www.econbiz.de/10015224087

Corporate competition: A self-organized network

Braha, Dan; Stacey, Blake; Bar-Yam, Yaneer - 2011

A substantial number of studies have extended the work on universal properties in physical systems to complex networks in social, biological, and technological systems. In this paper, we present a complex networks perspective on interfirm organizational networks by mapping, analyzing and...

Persistent link: https://www.econbiz.de/10015227719

Allocation rules for fixed and flexible networks: the role of players and their links

Borkotokey, Surajit; Sarangi, Sudipta - 2011

We propose an allocation rule that takes into account the importance of players and their links and characterizes it for a fixed network. Unlike previous rules, our characterization does not require component additivity. Next, we extend it to flexible networks a la Jackson (2005). Finally, we...

Persistent link: https://www.econbiz.de/10015231758

Efficient networks in connections models with heterogeneous nodes and links

Olaizola, Norma; Valenciano, Federico - 2022

We culminate the extension of the results on efficiency in the seminal connections model of Jackson and Wolinsky (1996), partially addressed in previous papers. In a model where both nodes and links are heterogeneous, we prove that efficiency is reached by networks with a particular type of...

Persistent link: https://www.econbiz.de/10015268722

Making friends: the role of assortative interests and capacity constraints

Jimenez Martínez, Antonio; Melguizo Lopez, Isabel - 2022

We study friendship networks under the assumption that people are constrained to build the qualities of their relations. We investigate the connection between (exogenous) assor- tative interests and (endogenous) homophilic patterns, and its welfare implications. Un- der a simple link formation...

Persistent link: https://www.econbiz.de/10015268858

A connections model with decreasing returns link-formation technology

Olaizola, Norma; Valenciano, Federico - 2020

We study a connections model where the strength of a link depends on the amount invested in it and is determined by an increasing strictly concave function. The revenue from investments in links is the information that the nodes receive through the network. First, the structures of efficient...

Persistent link: https://www.econbiz.de/10015242572

Efficiency and stability in the connections model with heterogeneous node

Olaizola, Norma; Valenciano, Federico - 2021

This paper studies the connections model (Jackson and Wolinsky, 1996) when nodes may have different values. It is shown that efficiency is reached by a strongly hierarchical structure that we call strong NSG-networks: Nested Split Graph networks where the hierarchy or ranking of nodes inherent...

Persistent link: https://www.econbiz.de/10015243676

Landscape in the Economy of Conspicuous Consumptions

Situngkir, Hokky - 2010

Psychological states side by side with the bounded rational expectations among social agents contributes to the pattern of consumptions in economic system. One of the psychological states are the envy – a tendency to emulate any gaps with other agents’ properties. The evolutionary game...

Persistent link: https://www.econbiz.de/10015221795

On social and economic spheres: an observation of the “gantangan” Indonesian tradition

Situngkir, Hokky; Prasetyo, Yanu Endar - 2012

Indonesian traditional villagers have a tradition for the sake of their own social and economic security named “nyumbang”. There are wide variations of the traditions across the archipelago, and we revisit an observation to one in Subang, West Java, Indonesia. The paper discusses and employs...

Persistent link: https://www.econbiz.de/10015232618

Markets in political influence: rent-seeking, networks and groups

Murray, Cameron K. - 2012

models of rent-seeking appear to be a promising avenue for developing an integrated theory of the market for political … influence that predicts many of the observed stylised facts, and can better inform policy makers. Such a theory has the …. This review highlights the shortcomings of basic rent-seeking theory and analyses how network and group concepts can …

Persistent link: https://www.econbiz.de/10015234282