Tie Strength On Facebook, or Who Posts What to Whom, and Where?

Presentation at the XXXV Sunbelt Conference of the International Network for Social Network Analysis (INSNA) in Brighton (June, 2015)

Transcript

1. Irène Bastard Dominique Cardon Baptiste Fontaine Christophe Prieur Tie Strength On Facebook, or Who Posts What to Whom, and Where? XXXV Sunbelt Conference of the International Network for Social Network Analysis June 25, 2015 Telecom Paris Tech Univ. Paris Diderot Telecom Paris Tech Orange Labs Univ. Paris Diderot &
2. Tie Strength
3. Strong Ties
4. Weak Ties Fingerman, 2009 Granovetter, 1973 Weak ties are essential to find jobs and new sources of information They have an important role for the quality of life
5. Ellison et al., 2007 Hampton et al., 2011 Brooks et al., 2014 Internet doesn’t kill social links Boase & Wellman, 2006 Facebook is used to maintain existing friendships Posting status updates reduces loneliness Deters & Mehl, 2013 Netlab project (Wellman et al.)
6. Facebook (2004-)
7. user friend friend friend friend friend friend Facebook (2004-)
8. user friend friend friend friend friend friend Facebook (2004-)
9. Ego Alter Alter Alter Alter Alter Alter
10. Publications
11. A Facebook publication is some Text a Photo [with Text] a Link [with Text] {
12. A Facebook publication is some Text [with Tags] a Link {a Photo [with Text] [with Text] }
13. A Facebook publication is some Text [with Tags] on an Alter’s profile a Link { { a Photo [with Text] [with Text] } } Ego’s profile
14. A Facebook publication is some Text [with Tags] It generates Likes and Comments. a Link { } a Photo [with Text] [with Text] on { Ego’s profile an Alter’s profile }
15. Text Photo Likes Comments Publication Reactions
16. Protocol
17. An application which collects profile, activity, and friends data for all participants Semi-structured individual interviews with some participants 1. 2. Protocol
18. An interface to capture one’s network
19. and a survey about at least 5 Alters since when do you know this person? how often do you meet them face-to-face? and via phone, email, chat? how close are you to them? are they a friend? acquaintance? colleague? family member? how would you describe your relation?
20. Dataset
21. Two Datasets
22. Two Datasets CSA 15,321 total 877 paper in Le Monde.fr Dec ’13 Oct ’13 April ’15 11,444 Word-of-mouth paper in Le Monde.fr representative sample
23. Two Datasets CSA 44% 56% 70% 30% male female Word-of-mouth
24. Two Datasets CSA 44% 56% 70% 30% 37 years old 25 years old male female Word-of-mouth
25. Two Datasets CSA 44% 56% 70% 30% 37 years old 25 years old 78 Facebook friends 284 Facebook friends male female Word-of-mouth
26. Data
27. Data User Profile Activity Friends
28. Data User Profile × (877 + 15,321) CSA Word-of-mouth Activity Friends
29. Activity { "from": { "name": "Frank Bridge" }, "created": 1317111337000, "updated": 1317111337000, "application": { "name": "Likes" }, "type": [ "status" ], "story_tags": [ { "type": "user", "name": "Frank Bridge" }, { "name": "Violin" } ], "story": " Frank likes Violin.", "id": "6fe3c52b", "tags": [ { "name": "Violin" } ] }
30. from: name: Frank Bridge application: name: Likes type: - status story_tags: - type: user name: Frank Bridge - name: Violin story: " Frank likes Violin."
31. from: id: 4100c8f3 application: name: Likes type: - status story_tags: - type: user id: 4100c8f3 - id: ad8ecbd0 story: " 4100c8f3 likes ad8ecbd0." Anonymization
32. Labelling
33. from: id: 4100c8f3 application: name: Likes type: - status story_tags: - type: user id: 4100c8f3 - id: ad8ecbd0 story: " 4100c8f3 likes ad8ecbd0." from: id: 4100c8f3 application: name: CityVille type: - status story_tags: - type: user id: 3b893317 story: "« Thanks for sharing 'Send... » about 3b893317’s publication."
34. 63850 status 10522 status, approved_friend 9615 link 9572 status, mobile_status_update 8551 status, wall_post 7971 link, shared_story 7525 link, app_created_story 6713 photo, added_photos 5405 video, shared_story 2888 photo, shared_story 2813 photo 2809 photo, tagged_in_photo 1122 status, app_created_story 835 video 634 link, approved_friend 317 question 212 checkin 164 swf, app_created_story 67 photo, mobile_status_update 53 video, added_video 26 link, created_event 9 link, created_note 9 link, created_group 6 status, shared_story 5 music, shared_story 4 offer 3 video, app_created_story status link wall_post mobile_status_update app_created_story photo video added_photos added_video shared_story approved_friend Facebook’s “type” field is not reliable in many cases
35. The “story” field 4100c8f3 started playing on 94c70e25. 4100c8f3 commented on Voici.fr. 4100c8f3 likes 00741679. 4100c8f3 and c216115d are now friends. « Happy birthday! » about 3b893317’s wall. « clap, clap » about 44e5ec23’s photo.
36. 4100c8f3 started playing on 94c70e25. 4100c8f3 commented on Voici.fr. 4100c8f3 likes 00741679. 4100c8f3 and c216115d are now friends. « Happy birthday! » about 3b893317’s wall. « clap, clap » about 44e5ec23’s photo. link link link The “story” field
37. 4100c8f3 started playing on 94c70e25. 4100c8f3 commented on Voici.fr. 4100c8f3 likes 00741679. 4100c8f3 and c216115d are now friends. « Happy birthday! » about 3b893317’s wall. « clap, clap » about 44e5ec23’s photo. link link link status approved_friend status wall_post The “story” field
38. 4100c8f3 started playing on 94c70e25. 4100c8f3 commented on Voici.fr. 4100c8f3 likes 00741679. 4100c8f3 and c216115d are now friends. « Happy birthday! » about 3b893317’s wall. « clap, clap » about 44e5ec23’s photo. link link link status approved_friend status wall_post status The “story” field
39. 4100c8f3 started playing on 94c70e25. 4100c8f3 commented on Voici.fr. 4100c8f3 likes 00741679. 4100c8f3 and c216115d are now friends. « Happy birthday! » about 3b893317’s wall. « clap, clap » about 44e5ec23’s photo. link link link status approved_friend status wall_post status The “story” field
40. Five Features
41. Five W’s
42. Who? What? Where? With whom? Which action?
43. Who? Ego or Alter (or an application)
44. Which action? Text Publication Like Share Status, Photo or Link with text Photo or Link without text Shared text or publication Comment
45. What? Status or Photo or Link
46. Where? Ego’s profile or Alter’s profile (or a page)
47. With whom? Alone or with an Alter or with a page
48. Who What Where With whom Which action Ego Link Page Text with Alter Alter Publication Share Like Photo Status Alter’s profile Ego’s profile Alone Comment
49. Guessed Types
50. 92 Guessed Types
51. URL starts with apps.facebook.com URL starts with facebook.com/photo.php the “msg” field is not empty yes no from Ego ≠ no yes yes no yes no yes no the “msg” field is not empty yes no URL starts with facebook.com/photo.php story contains “was with <id>” Game Alter posts a Photo with Text Alter posts a Photo without Text Alter posts a Link without Text Alter posts a Link with Text the “msg” field is not empty yes Alter posts a Status Photo Identification yes no yes no the “URL” field is not empty
52. 92 Guessed Types 2 out of 5 activities are Games (37%, CSA dataset)
53. 91 Guessed Types from the non-games activity Who Ego 91% 6% Alter (unknown: 3%) With Whom 65% 30% 2% Alone Alter Page What 32% 24% 17% Statuses Photos Links
54. 91 Guessed Types from the non-games activity Where? 78% 18% Ego’s profile Alter’s profile Page Which action? 36% 19% 11% Like Publication Share 32% Text 2%
55. 91 Guessed Types On average, generates 7.5 likes and 2.5 comments Changing a profile picture 4.8 likes Posting a photo with text 1.5 likes Posting a photo without text (CSA dataset, N=4,295) (CSA dataset, N=57,145) (CSA dataset, N=18,337) 4.0 comments 1.5 comments
56. Interviews
57. Interviews Some close friends tend to systematically like Ego’s publications to show their support, not because they really liked these publications.
58. “I have friends who like a lot, so in general I can trust them; I know I’ll get at least 10 likes.” — Alexandre one of the interviewees (this is not his real name)
59. Interviewees sometimes accept friend requests because they feel they have to, like with family members. They also keep some existing Facebook friends just to be polite. Interviews
60. “You see, Damien, I don’t want to see him again, I hid his publications, but I haven’t deleted him yet because it would break a link between us.” — Emma one of the interviewees (this is not her real name)
61. Perspectives
62. Thank you. https://github.com/Algopol/guessed_types algopol.fr