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Internet
Social network
Social network
 A social network is a social structure made
  of nodes (which are generally individuals or
  organizations) that are tied by one or more
  specific types of interdependency, such as
  values, visions, ideas, financial exchange,
  friendship, sexual relationships, kinship,
  dislike, conflict or trade.
Social network
 Social network analysis views social relationships
  in terms of nodes and ties.

 Nodes are the individual actors within the
  networks, and ties are the relationships between
  the actors. The resulting graph-based structures
  are often very complex.

 There can be many kinds of ties between the
  nodes.
Social network
 Research in a number of academic fields
  has shown that social networks operate on
  many levels, from families up to the level of
  nations, and play a critical role in
  determining the way problems are solved,
  organizations are run, and the degree to
  which individuals succeed in achieving their
  goals.
Social network
 In its simplest form, a social network is a
  map of all of the relevant ties between the
  nodes being studied. The network can also
  be used to determine the social capital of
  individual actors. These concepts are often
  displayed in a social network diagram,
  where nodes are the points and ties are the
  lines.
Internet
History of social network analysis
History of social network analysis
 Precursors of social networks in the late

 1800s include mile Durkheim and

 Ferdinand T旦nnies.
History of social network analysis
 T旦nnies argued that social groups can exist as
  personal and direct social ties that either link
  individuals who share values and belief
  (gemeinschaft) or impersonal, formal, and
  instrumental social links (gesellschaft). Durkheim
  gave a non-individualistic explanation of social
  facts arguing that social phenomena arise when
  interacting individuals constitute a reality that can
  no longer be accounted for in terms of the
  properties of individual actors.
History of social network analysis
 He distinguished between a traditional
  society  "mechanical solidarity"  which
  prevails if individual differences are
  minimized, and the modern society 
  "organic solidarity"  that develops out of
  cooperation between differentiated
  individuals with independent roles.
History of social network analysis
 Georg Simmel, writing at the turn of the
  twentieth century, was the first scholar to
  think directly in social network terms. His
  essays pointed to the nature of network size
  on interaction and to the likelihood of
  interaction in ramified, loosely-knit networks
  rather than groups (Simmel, 1908/1971).
History of social network analysis
 Social network analysis developed with the kinship
  studies of Elizabeth Bott in England in the 1950s
  and the 1950s-1960s urbanization studies of the
  University of Manchester group of anthropologists
  (centered around Max Gluckman and later J.
  Clyde Mitchell) investigating community networks
  in southern Africa, India and the United Kingdom.
  Concomitantly, British anthropologist S.F. Nadel
  codified a theory of social structure that was
  influential in later network analysis.
History of social network analysis
 In the 1960s-1970s, a growing number of scholars
  worked to combine the different tracks and
  traditions.
 One large group was centered around Harrison
  White and his students at Harvard University: Ivan
  Chase, Bonnie Erickson, Harriet Friedmann, Mark
  Granovetter, Nancy Howell, Joel Levine, Nicholas
  Mullins, John Padgett, Michael Schwartz and
  Barry Wellman.
History of social network analysis
 Also important in this early group were
  Charles Tilly, who focused on networks in
  political sociology and social movements,
  and Stanley Milgram, who developed the
  "six degrees of separation" thesis.

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Internet

  • 2. Social network A social network is a social structure made of nodes (which are generally individuals or organizations) that are tied by one or more specific types of interdependency, such as values, visions, ideas, financial exchange, friendship, sexual relationships, kinship, dislike, conflict or trade.
  • 3. Social network Social network analysis views social relationships in terms of nodes and ties. Nodes are the individual actors within the networks, and ties are the relationships between the actors. The resulting graph-based structures are often very complex. There can be many kinds of ties between the nodes.
  • 4. Social network Research in a number of academic fields has shown that social networks operate on many levels, from families up to the level of nations, and play a critical role in determining the way problems are solved, organizations are run, and the degree to which individuals succeed in achieving their goals.
  • 5. Social network In its simplest form, a social network is a map of all of the relevant ties between the nodes being studied. The network can also be used to determine the social capital of individual actors. These concepts are often displayed in a social network diagram, where nodes are the points and ties are the lines.
  • 6. Internet History of social network analysis
  • 7. History of social network analysis Precursors of social networks in the late 1800s include mile Durkheim and Ferdinand T旦nnies.
  • 8. History of social network analysis T旦nnies argued that social groups can exist as personal and direct social ties that either link individuals who share values and belief (gemeinschaft) or impersonal, formal, and instrumental social links (gesellschaft). Durkheim gave a non-individualistic explanation of social facts arguing that social phenomena arise when interacting individuals constitute a reality that can no longer be accounted for in terms of the properties of individual actors.
  • 9. History of social network analysis He distinguished between a traditional society "mechanical solidarity" which prevails if individual differences are minimized, and the modern society "organic solidarity" that develops out of cooperation between differentiated individuals with independent roles.
  • 10. History of social network analysis Georg Simmel, writing at the turn of the twentieth century, was the first scholar to think directly in social network terms. His essays pointed to the nature of network size on interaction and to the likelihood of interaction in ramified, loosely-knit networks rather than groups (Simmel, 1908/1971).
  • 11. History of social network analysis Social network analysis developed with the kinship studies of Elizabeth Bott in England in the 1950s and the 1950s-1960s urbanization studies of the University of Manchester group of anthropologists (centered around Max Gluckman and later J. Clyde Mitchell) investigating community networks in southern Africa, India and the United Kingdom. Concomitantly, British anthropologist S.F. Nadel codified a theory of social structure that was influential in later network analysis.
  • 12. History of social network analysis In the 1960s-1970s, a growing number of scholars worked to combine the different tracks and traditions. One large group was centered around Harrison White and his students at Harvard University: Ivan Chase, Bonnie Erickson, Harriet Friedmann, Mark Granovetter, Nancy Howell, Joel Levine, Nicholas Mullins, John Padgett, Michael Schwartz and Barry Wellman.
  • 13. History of social network analysis Also important in this early group were Charles Tilly, who focused on networks in political sociology and social movements, and Stanley Milgram, who developed the "six degrees of separation" thesis.