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Last problem was 0480 (HELP) |
Q40. Structural equivalence problems
Q39. Cohesive subgroups problems
Q38. Homophily Problems
Q37. Centrality Problems
Q36. Consider the graph matrix below
| A | B | C | D | E | |
| A | - | 0 | 1 | 0 | 1 |
| B | 0 | - | 0 | 1 | 1 |
| C | 0 | 1 | - | 1 | 1 |
| D | 0 | 0 | 1 | - | 0 |
| E | 0 | 1 | 1 | 1 | - |
- We use $n$ for the number of vertices. What is $n$ here?
- What is $\sum _{ i=1 }^{ n }{ { A }_{ i4 } }$?
- What is $\sum _{ j=1 }^{ n }{ { A }_{ 3j } }$?
Q35. A researcher asks a respondent, Maria, to list her six closest friends. She says A, B, C, D, E, and F. The researcher then asks which of these friends have you had dinner with in the last week? A, C, D. Which ones have you texted today? A, B, D, F. Which ones did you know before you came to this school? C, D. On whose wall have you posted in the last week? D, E, F.
Show how this information would be recorded in your field notes.
Q34. Write out the data for the undirected network below in node list, edge list and full matrix format.
Q33. Practice Gephi exercises.
Q32. In addition to replicating the material in the text, we'll have a "and now try it with this" exercise. Self test at end. Can I : enter vertices and display graph? select an edge ? move the graph plane around? switch graph type between directed and undirected? change data and update graph? move vertices around "manually"? set vertex colors and sizes? use the autofill tool? add vertex labels? add tool tips? save a layout? save a data file?
Q31. Demonstrate basic familiarity with email, wikis, Twitter, Facebook, newsgroups, listserves.
Q30. Write out your responses to the following.
- Lists
- Name at least ten areas of human, social, natural phenomena that have been explored by network researchers.
- Identify/describe three networks you have encountered this week.
- Name at least five academic disciplines in which the study of networks has become a big deal.
- Meta
- Newman, et al. mention "theoretical" work, "empirical" work, and modeling as activities associated with network science. What do you understand by each of these?
- Hansen, et al. (and to a lesser extent other authors here) suggest some grandiose assessments of network science's place in the history of science. Newman et al. hint at some tensions between the kind of data social scientists collect and the tools they have for analyzing them and the kind of data used in the "new science of networks" and the tools brought to the task by physicists and computer scientists. Can you zero in on the passages and identify some of the issues?
- In sections 1.6-8, Hansen et al. describe applications of social media to public problems, crowdsourcing, and problems of engagement, mentioning, eventually, the term "sociotechnical systems." Meditate a bit on the dual answers this suggests to the question "how can I use my degree in sociology (or whatever your major is)?" — either studying how technology changes the world or being actively involved in designing things that can change the world.
- Real World
- From how many realms do your facebook friends come? Estimate the macro-structure of your facebook network just based on thinking about it. How does it show the different social circles you are a member of? How does it show your different "sides"? How does it show your personal biography? How big do you think the different clusters are? Can you think of people who link the different clusters together?
Q29. Consider the series below showing the maximum number of edges (m) possible in networks with different numbers of vertices (n). Come up with a general formula for m in terms of n (that is, for a network with n vertices, what is the maximum number of edges — assuming no self-edges and no multi-edges?).
Q28. Consider the three networks in the figure below. For each one, calculate the ratio of actual number of edges to the most maximum number of edges possible (assuming the graphs are simple).
Q27. Consider the imaginary bibliographies shown below for 7 classic works of sociology.
- Aron, Raymond. 1967. Les Étapes de la pensée sociologique
- Bourdieu, Pierre. 1972. Esquisse d'une théorie de la pratique, précédé de trois études d'ethnologie kabyle (Outline of a Theory of Practice)
- Crozier, Michel. 1964. The Bureaucratic Phenomenon
- Durkheim, Emile. 1912. Elementary Forms of the Religious Life
- Erikson, Kai. 1967. Wayward Puritans
- Frazier, E. Franklin. 1955. Bourgeoisie noire
- Geiger, Theodore. 1963. Demokratie ohne Dogma: Die Gesellschaft zwischen Pathos und Niichternheit.
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Aron 1967 Crozier |
Bourdieu 1972 Aron |
Crozier 1964 Durkheim |
Durkheim 1912 |
Erikson 1967 Aron |
Frazier 1955 Durkheim |
Geiger 1963 Durkheim |
(a) Sketch the directed network of citations.
(b) For each pair of authors count up how many times they cite the same other author.
(c) Next, for each pair of authors, count how many books cite both of them. For example, Crozier and Durkheim are cited by Aron, Bourdieu, and Erikson so the count would be 3.
Q26. Amir likes Bashir. Chastity is liked by Danica. Chastity likes Ellen. Amir likes Danica and Ellen. Franke likes everyone. Gillian likes Danica. Ellen likes Bashir. Sketch this directed network.
Q25. Use NodeXL to reproduce the organizational chart below. Take note of the appearance of the network with various layout options. Try changing the type to "directed" in the chart panel of the NodeXL ribbon. What do you say about organizational charts as networks from examining the different layouts?
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