Lada A Adamic 12 Debra Lauterbach 1 ChunYuen Teng 1 Mark S Ackerman 12 1 School of Information 2 EECS University of Michigan USA ladamic dlauterchunyuenackerm ID: 657267
Download Presentation The PPT/PDF document "Rating Friends Without Making Enemies" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Rating Friends Without Making Enemies
Lada A. Adamic1,2, Debra Lauterbach1, Chun-Yuen Teng1, Mark S. Ackerman1,21School of Information, 2EECS, University of Michigan, USA{ladamic,dlauter,chunyuen,ackerm}@umich.edu
Person-to-person rating types
characteristictypeshownfriendshipordinalyestrustordinalnovouchbinaryyesreferencepos/neg/neutral + textyes
Data from a large hospitality network3,011,487 reciprocal ratings from CouchSurfing527 survey responses18 interviews
Questions:Can trust and friendship be quantified?Why are friendship ratings more reciprocal than trust?Why are negative references so scarce?
Concern for others’
reputation…the few times when I had a neutral experience, I believe it was because of personal character differences, and not because I had complaints against the person in question. Somebody else might have a positive experience, why write them a negative/ neutral one and prevent people from considering the person? [S83]… and fear of reciprocal actionBut the big problem is that if you leave a bad reference, what happens then. What will that person say about you. You leave a bad reference and he can do the same. And its not true. [S37]…. results in lack of information about negative experiencesI chose not to leave a reference because I just felt uncomfortable [] Today, I regret that. I wish I had left a negative reference so no one else would have been put in that situation that we were. [P9]
Survey: Why did you not leave a reference?
data: 2,500 positive references to 1 negative one
numerical ratings
One “level” is never enough to point to the correct tone of a human relation [S291]
private vs. public rating
It can be difficult to select a friendship level if I am unsure of how the other person may react or if I think they may see our friendship as being at a different level. [S114]asymmetry in trust and friendshipI think close friends you can trust, but I don’t think everyone you trust is a close friend [P12]
Can trust and friendship be quantified?
Why so
few negative references?
References are expected and reciprocated
over ½ of survey respondents always leave a reference
hosts and surfers leave a reference for each other 90% of the timeWe hosted them & because they didn’t leave a reference, we thought it was rude & decided not to leave one also [S59]differences in friendship ratings (A to B and B to A) are unnoticed or tolerated and rarely spur updatesNot a big deal but yes it feels not great. Because you see that the feelings about the friendships is not really mutual. [S31]vouches are not requested, and not automatically reciprocatedAnd no one ever asked me and I’ve never asked anyone to vouch for me. It’s kind of like a...[] taboo thing. [P9]
Can one influence rating norms?
“Respecting the significance of vouching is essential to the integrity of the network... It is very important that you ONLY vouch for people that you … know well enough to believe that he or she is trustworthy.”
Sending and interpreting
signals
Summary: Rating friends is tricky. Rating enemies is trickier.
what is useful in evaluating a strangerI either neglect to reference, or write a “positive response but in a neutral tone [S67]
friendship is more reciprocal than trust
r
(
trustA
B,
B
A
) = 0.39
r
(
friendship A
B
,
B
A) =
0.73