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Is there any way of normalizing tie strength in the literature? If one 
defines tie strength between A and B as the number of times A and B have 
seen each other, then tie strengths (for the whole social network) are 
not comparable. To see why, consider that A and B have met four times. 
Those four times entail completely different meanings in different 
situations - for instance, they would reflect either an absent tie (if A 
and B are jet setters and go out a lot) or a strong tie (if they are 
homebodies and rarely go out). Also, if one normalizes the strength on 
A->B based on A's total number of encounters, then one should choose a 
threshold that differentiates strong ties from weak ties, and this begs 
the question of how to choose that threshold :-)


Daniele.
http://www.cs.ucl.ac.uk/staff/d.quercia/
group blog: http://mobblog.cs.ucl.ac.uk/ (join us!)

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