SNA Week 3 UCINET & NetVizz &Facebook API

Presentation on theme: "SNA Week 3 UCINET & NetVizz &Facebook API"— Presentation transcript:

1 SNA Week 3 UCINET & NetVizz &Facebook API

2 UCINET `

3 Download UCINET

4 UCINET Introduction UCINET—UCINET is produced by Analytic Technologies. It offers a very user-friendly, reasonably priced software system for network analysis. When you first open UCINET, set the default directory to a directory of your choice, by typing in the directory name (into the space at the bottom edge of the UCINET window). Note that the original default directory is just the c:\ drive. Note that UCINET produces many types of files—and deleting any (before you are entirely done with your analysis) may make it difficult to use some of the others

5 UCINET

6 UCINET

7 UCINET-Data Editor

8 UCINET-Data Editor

9 Data Format-Nodelist dl n=4, format=nodelist1 labels:
Labels embedded data Peter mary Derrick mary john derrick peter peter dl n=4, format=nodelist1 labels: derrick, peter, mary, john data 1 2 3 3 1 2 4 2

10 Data Format-Nodelist2 dl nr=3, nc=4 format=nodelist2
Row labels embedded Column labels embedded Data: Benny sex_roles, stats Ginny aging, intro Sally stats, intro, aging

11 Data Format-Rankedlist
dl n=4, format=rankedlist1 Labels embedded Data: Peter mary Derrick mary john derrick peter peter

12 Data Format-Edgelist dl n = 4 format = edgelist1 labels:
Sanders,Skvoretz,S.Smith,T.Smith data: 1 2 1 1 3 2 2 1 1 2 3 1 2 4 3 1 1 3 2 na

13 Import Nodelist 1 Data

14 DL-Editor

15 DL-Editor

16 NetDraw

17 NetDraw

18 Bob 1 Carol 2 Ted 3 Alice 4

19 Susan 1 Kathy 2 Tanya 3 Donna 4 Nancy 5 Manuel 6 Charles 7 Harold 8 Carol 9 Stuart 10 Fred Bob Sharon 13 Wynn 14

20 UCINET-Measuerments

21 Degree Centrality NetworkCentrality-->Degree Centrality
Symmetric-->Degree Asymmetric-->Indegree, Outdegree Degree Centrality

22 Closeness Centrality

23 Betweenness Centrality
NetworkCentrality-->Betweenness Degree Centrality Betweenness does not care about the direction Betweenness Centrality

24 Structural Holes Networks Ego Networks-->Structural Holes
EffSize = size of network minus redundancy in network Efficiency = effective size / actual size of network Constraint = how much investment the ego has in the specific individual, how constraint ego is by that actor. This is an inverse measure of social capital. Hierarchy = same interpretation as constraint but more exaggerated, just constraint by 1 you have a high hierarchy. This measure is rarely used in network studies.

25 NetworkCohesion-->Density NetworkEgo Networks-->Egonet Density
Network-->Egonet basic measurement

26 Clustering Coefficient
NetworkCohension-->Clustering Coefficient Clustering Coefficient

27 NetworkSubgroups-->Cliques
Trade Dataset Clique

28 N-Cliques NetworkSubgroups-->Cliques

29 Hierarchical Clustering
NetDrawAnalysis-->Subgroups-->Girvan-Newman

30 NetVizz

31 NetVizz Data Group Data Page Data Page Like Network Search Link Stats
Data Format GDF TAB

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34 Gephi

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37 Homework Get Data form Facebook Page or Group Graph in Guff
Export data to UCINET SNA Measurements in UCINET Degree Betweenness Density Clustering Coefficient

38 FB資料擷取

39 Facebook 2004年2月創立 哈佛美國大學加拿大大學英國大學 (.edu, ac.uk)
類似classmate.com 的經營模式 2006年10月對外開放 (所有合法的 )

40 社群網戰

41 Facebook 2008年中文版 (twitter 2011年九月) 2009 年 Facebook API
2009年全新改版-動態時報, 粉絲專頁 2009隱私權爭議 2009年中國封鎖FB 2011年茉莉花革命 2012 FB NASDAQ上市 2012 FB 推出APP Center 2013年Social Graph Search

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44 So, 我們想要什麼資料 https://developers.facebook.com/docs/graph-api/reference
資料來源 個人資訊 朋友列表(新API已限制) 動態時報 社團Group 粉絲專頁 相簿 Message (!!!) 類型 資訊 文章Post Like, Comment, Body Photo Check-in ….

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46 Facebook 資料擷取方式 史前時代 FQL-Facebook Query Language Graph API
眼力 Crawler FQL-Facebook Query Language SQL like Graph API 初始版本對於隱私完全性的開放 Graph API 2.0 App須先經過審核 好友名單的限制 好友也需同意授權 Other Tools Netvizz

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48 使用FQL & Graph API 先註冊為開發者以及建立App

49 Graph API Explorer

50 Access Token授權

51 FQL https://developers.facebook.com/docs/reference/fql/
SELECT user_id FROM like WHERE object_id=' ’ SELECT message_id FROM message WHERE thread_id = ' '

52 Graph API 2.0

53 程式的支援 SDKs http://140.127.218.138/ting/ SDKs 資料回傳 iOS Android PHP
JavaScript Unity ……. 資料回傳 JSON格式

54 FB API The good, the bad, and the ugly
容易上手 取得的資料格式容易處理 隱私 The bad 受制於FB 資料來源的限制, 資料量的限制, 存取頻繁度的限制 The ugly 失去hack FB 的能力

55 相關應用與研究

56 Social Insight-粉絲專頁

57 Hi Buzz

58 OPview

59 So, 最後 Facebook 的政策改變頻繁 Facebook商業利益的考量 資料先入袋 可思考商業的應用與更有貢獻的研究 隱私權的考量