Posts tagged ‘arcs’

The importance of allowing ties to decay

Evolving networkRecently, a number of network dataset have been constructed from archival data (e.g., email logs) with the aim to study human interaction. This has allowed researchers to study large-scale social networks. If the archival data does not included information about the severing or weakening of ties, non-relevant interaction among people, which occurred far in the past, might be deemed relevant. This post highlights this issue and suggests imposing a lifespan on interactions to record only relevant ties with the current strength.

The content of this post has been integrated in the tnet manual, see Sliding Window.

March 20, 2009 at 12:00 am

Operationalisation of tie strength in social networks

Ties' strength and weightThe method used to operationalise ties’ strength into weights affects the outcomes of weighted networks measures. Simply assigning 1, 2, and 3 to three different levels of tie strength might not be appropriate as this scale might misrepresent the actually difference among the three levels (using an ordinal scale). In this post, I highlight issues with collecting weighted social network data from surveys.

The content of this post has been integrated in the tnet manual, see Defining Weighted Networks.

February 6, 2009 at 12:00 am 1 comment

Article: Prominence and control: The weighted rich-club effect

A paper called Prominence and control: The weighted rich-club effect that I have co-authored was published in Physical Review Letters (PRL). In this paper, we proposed a new general framework for studying the tendency of prominent nodes to direct their strongest ties toward each other.

Continue Reading December 12, 2008 at 12:00 am 4 comments

Network? Weighted network?

social-network_weightedNetworks are the cornerstone of this blog, therefore I have decided to make the first post my definition of a network and a few basic network measures.

The content of this post has been integrated in the tnet manual.

November 28, 2008 at 12:00 am 3 comments

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