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SUMMARY:CNN seminar - Community Structure and Patterns of Scientific Colla
 boration in Co-authorship Networks: Evidence from Business and Management 
 - Dr Pietro Panzarasa (Queen Mary University of London)
DTSTART:20121009T160000Z
DTEND:20121009T170000Z
UID:TALK42226@talks.cam.ac.uk
CONTACT:Petra Vertes
DESCRIPTION:In this talk I will investigate the role of homophily and focu
 s constraint in shaping collaborative scientific research. On the one hand
 \, homophily structures collaboration when scientists adhere to a norm of 
 exclusivity in selecting similar partners at a higher rate than dissimilar
  ones. Two forms of homophily can underpin scientific collaboration: statu
 s-based homophily\, when scientists preferentially select collaborators wi
 th whom they share the same status position\, and research-based homophily
 \, when scientists from the same research specialty are more likely to col
 laborate than scientists across different specialties. On the other\, focu
 s constraint shapes collaboration when connections among scientists depend
  on opportunities for social contact. Constraint comes in two forms\, depe
 nding on whether it originates from the institutional or geographic space.
  Institutional constraint refers to the tendency of scientists to select c
 ollaborators within rather than across institutional boundaries\, whereas 
 geographic constraint implies that\, when collaborations span different in
 stitutions\, they are more likely to involve scientists that are geographi
 cally co-located than dispersed. To study homophily and focus constraint\,
  I will argue in favour of an idea of collaboration that moves beyond form
 al co-authorship to include also other forms of informal intellectual exch
 ange that do not translate into the publication of joint work. A community
 -detection algorithm for formalising this perspective will be proposed and
  applied to a co-authorship network based on papers published in Business 
 and Management between 1996 and 2000. While results only partially support
  research-based homophily\, they indicate that scientists use status posit
 ions for discriminating between potential partners by selecting collaborat
 ors from institutions with a rating similar to their own. Strong support i
 s provided in favour of institutional and geographic constraints. Scientis
 ts tend to forge intra-institutional collaborations\; yet\, when they seek
  collaborators outside their own institutions\, they tend to select those 
 who are in geographic proximity. The implications of these findings for ti
 e creation in joint scientific endeavours will be discussed.
LOCATION:Keynes Hall in Kings College
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