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Rating Friends Without Making Enemies

Rating Friends Without Making Enemies Lada A. Adamic 1,2 , Debra Lauterbach 1 , Chun-Yuen Teng 1 , Mark S. Ackerman 1,2 1 School of Information, 2 EECS, University of Michigan, USA { ladamic ,dlauter,chunyuen,ackerm }@ umich.edu. what is useful in evaluating a stranger

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Rating Friends Without Making Enemies

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  1. Rating Friends Without Making Enemies Lada A. Adamic1,2, Debra Lauterbach1, Chun-Yuen Teng1, Mark S. Ackerman1,2 1School of Information, 2EECS, University of Michigan, USA {ladamic,dlauter,chunyuen,ackerm}@umich.edu • what is useful in evaluating a stranger • I either neglect to reference, or write a “positive response but in a neutral tone [S67] Survey: Why did you not leave a reference? • 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 time • We 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 updates • Not 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 reciprocated • And no one ever asked me and I’ve never asked anyone to vouch for me. It’s kind of like a...[] taboo thing. [P9] data: 2,500 positive references to 1 negative one • 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 action • But 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 experiences • I 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] • 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 friendship • I think close friends you can trust, but I don’t think everyone you trust is a close friend [P12] “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 … knowwell enough to believe that he or she is trustworthy.” • friendship is more reciprocal than trust • r(trustAB,BA) = 0.39 • r(friendship AB, BA) = 0.73

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