Mathematical model of the good and bad reputation problem

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I'm considering the following problem: I have a group of people, some of those people are considered good and trustworthy, and some are bad, but we don't know who belongs to which group. I also have a judge, whoes task is two devide those people into two groups - good group and bad group - as good as possible, meaning if we gonna reveal who is really good or bad, the respective people will be in a correct group assigned by the judge. People come in pairs to the judge and express their believe about the other person. For example, A and B come to the judge. The following events might occur:
(1) A says B is good and B says A is good
(2) A says B is bad and B says A is bad.
In the first case, both A and B might either both say true, or both lie. In the second case, only one of them is saying true, whereas the other one lies.



Judge does the following - if A said B is good, he increases the score of B. If A say's that B is bad, the score of B is decreased. Depending on some threshold T value at the end of the experiment, the judge assigns A and B to group 'good' or 'bad'.



I wonder whether there is any mathematical study on similar problem - where I can read how I should score + points, and - points, and what the assignet threshold T should depend on.



If someone can point me to some literature, I would be very grateful!







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  • 2




    This is not a mathematical question. There is no way mathematical way that tells you how you "should" score points and choose a threshold.
    – Ethan Bolker
    Aug 2 at 15:15






  • 2




    It's really ambiguous as well as stated: Do liars only/always lie? Will truthers always describe the other people correctly?
    – Sudix
    Aug 2 at 15:19










  • Yes, liers always lie. The honest people are always honest. So if someone is good - he will always claim he is good. If he thinks that other person is bad - he will say it, but if he believes that other person is good, he will say it as well (no false accusation from good people). If someone is bad - he will always claim that he is good, but he might accuse other people of being bad.
    – SugerBoy
    Aug 2 at 15:23










  • @SugerBoy Then the only reliably way is using logic. More parameters and your general aim now are most important: Do we know (roughly) how the ratio truther to liar is? Do we want to find (a) single trustworthy person or assess as good as possible who is truther and who liar?
    – Sudix
    Aug 2 at 15:35










  • Scratch that, graph theory might work as well
    – Sudix
    Aug 2 at 15:37














up vote
0
down vote

favorite












I'm considering the following problem: I have a group of people, some of those people are considered good and trustworthy, and some are bad, but we don't know who belongs to which group. I also have a judge, whoes task is two devide those people into two groups - good group and bad group - as good as possible, meaning if we gonna reveal who is really good or bad, the respective people will be in a correct group assigned by the judge. People come in pairs to the judge and express their believe about the other person. For example, A and B come to the judge. The following events might occur:
(1) A says B is good and B says A is good
(2) A says B is bad and B says A is bad.
In the first case, both A and B might either both say true, or both lie. In the second case, only one of them is saying true, whereas the other one lies.



Judge does the following - if A said B is good, he increases the score of B. If A say's that B is bad, the score of B is decreased. Depending on some threshold T value at the end of the experiment, the judge assigns A and B to group 'good' or 'bad'.



I wonder whether there is any mathematical study on similar problem - where I can read how I should score + points, and - points, and what the assignet threshold T should depend on.



If someone can point me to some literature, I would be very grateful!







share|cite|improve this question















  • 2




    This is not a mathematical question. There is no way mathematical way that tells you how you "should" score points and choose a threshold.
    – Ethan Bolker
    Aug 2 at 15:15






  • 2




    It's really ambiguous as well as stated: Do liars only/always lie? Will truthers always describe the other people correctly?
    – Sudix
    Aug 2 at 15:19










  • Yes, liers always lie. The honest people are always honest. So if someone is good - he will always claim he is good. If he thinks that other person is bad - he will say it, but if he believes that other person is good, he will say it as well (no false accusation from good people). If someone is bad - he will always claim that he is good, but he might accuse other people of being bad.
    – SugerBoy
    Aug 2 at 15:23










  • @SugerBoy Then the only reliably way is using logic. More parameters and your general aim now are most important: Do we know (roughly) how the ratio truther to liar is? Do we want to find (a) single trustworthy person or assess as good as possible who is truther and who liar?
    – Sudix
    Aug 2 at 15:35










  • Scratch that, graph theory might work as well
    – Sudix
    Aug 2 at 15:37












up vote
0
down vote

favorite









up vote
0
down vote

favorite











I'm considering the following problem: I have a group of people, some of those people are considered good and trustworthy, and some are bad, but we don't know who belongs to which group. I also have a judge, whoes task is two devide those people into two groups - good group and bad group - as good as possible, meaning if we gonna reveal who is really good or bad, the respective people will be in a correct group assigned by the judge. People come in pairs to the judge and express their believe about the other person. For example, A and B come to the judge. The following events might occur:
(1) A says B is good and B says A is good
(2) A says B is bad and B says A is bad.
In the first case, both A and B might either both say true, or both lie. In the second case, only one of them is saying true, whereas the other one lies.



Judge does the following - if A said B is good, he increases the score of B. If A say's that B is bad, the score of B is decreased. Depending on some threshold T value at the end of the experiment, the judge assigns A and B to group 'good' or 'bad'.



I wonder whether there is any mathematical study on similar problem - where I can read how I should score + points, and - points, and what the assignet threshold T should depend on.



If someone can point me to some literature, I would be very grateful!







share|cite|improve this question











I'm considering the following problem: I have a group of people, some of those people are considered good and trustworthy, and some are bad, but we don't know who belongs to which group. I also have a judge, whoes task is two devide those people into two groups - good group and bad group - as good as possible, meaning if we gonna reveal who is really good or bad, the respective people will be in a correct group assigned by the judge. People come in pairs to the judge and express their believe about the other person. For example, A and B come to the judge. The following events might occur:
(1) A says B is good and B says A is good
(2) A says B is bad and B says A is bad.
In the first case, both A and B might either both say true, or both lie. In the second case, only one of them is saying true, whereas the other one lies.



Judge does the following - if A said B is good, he increases the score of B. If A say's that B is bad, the score of B is decreased. Depending on some threshold T value at the end of the experiment, the judge assigns A and B to group 'good' or 'bad'.



I wonder whether there is any mathematical study on similar problem - where I can read how I should score + points, and - points, and what the assignet threshold T should depend on.



If someone can point me to some literature, I would be very grateful!









share|cite|improve this question










share|cite|improve this question




share|cite|improve this question









asked Aug 2 at 15:12









SugerBoy

23819




23819







  • 2




    This is not a mathematical question. There is no way mathematical way that tells you how you "should" score points and choose a threshold.
    – Ethan Bolker
    Aug 2 at 15:15






  • 2




    It's really ambiguous as well as stated: Do liars only/always lie? Will truthers always describe the other people correctly?
    – Sudix
    Aug 2 at 15:19










  • Yes, liers always lie. The honest people are always honest. So if someone is good - he will always claim he is good. If he thinks that other person is bad - he will say it, but if he believes that other person is good, he will say it as well (no false accusation from good people). If someone is bad - he will always claim that he is good, but he might accuse other people of being bad.
    – SugerBoy
    Aug 2 at 15:23










  • @SugerBoy Then the only reliably way is using logic. More parameters and your general aim now are most important: Do we know (roughly) how the ratio truther to liar is? Do we want to find (a) single trustworthy person or assess as good as possible who is truther and who liar?
    – Sudix
    Aug 2 at 15:35










  • Scratch that, graph theory might work as well
    – Sudix
    Aug 2 at 15:37












  • 2




    This is not a mathematical question. There is no way mathematical way that tells you how you "should" score points and choose a threshold.
    – Ethan Bolker
    Aug 2 at 15:15






  • 2




    It's really ambiguous as well as stated: Do liars only/always lie? Will truthers always describe the other people correctly?
    – Sudix
    Aug 2 at 15:19










  • Yes, liers always lie. The honest people are always honest. So if someone is good - he will always claim he is good. If he thinks that other person is bad - he will say it, but if he believes that other person is good, he will say it as well (no false accusation from good people). If someone is bad - he will always claim that he is good, but he might accuse other people of being bad.
    – SugerBoy
    Aug 2 at 15:23










  • @SugerBoy Then the only reliably way is using logic. More parameters and your general aim now are most important: Do we know (roughly) how the ratio truther to liar is? Do we want to find (a) single trustworthy person or assess as good as possible who is truther and who liar?
    – Sudix
    Aug 2 at 15:35










  • Scratch that, graph theory might work as well
    – Sudix
    Aug 2 at 15:37







2




2




This is not a mathematical question. There is no way mathematical way that tells you how you "should" score points and choose a threshold.
– Ethan Bolker
Aug 2 at 15:15




This is not a mathematical question. There is no way mathematical way that tells you how you "should" score points and choose a threshold.
– Ethan Bolker
Aug 2 at 15:15




2




2




It's really ambiguous as well as stated: Do liars only/always lie? Will truthers always describe the other people correctly?
– Sudix
Aug 2 at 15:19




It's really ambiguous as well as stated: Do liars only/always lie? Will truthers always describe the other people correctly?
– Sudix
Aug 2 at 15:19












Yes, liers always lie. The honest people are always honest. So if someone is good - he will always claim he is good. If he thinks that other person is bad - he will say it, but if he believes that other person is good, he will say it as well (no false accusation from good people). If someone is bad - he will always claim that he is good, but he might accuse other people of being bad.
– SugerBoy
Aug 2 at 15:23




Yes, liers always lie. The honest people are always honest. So if someone is good - he will always claim he is good. If he thinks that other person is bad - he will say it, but if he believes that other person is good, he will say it as well (no false accusation from good people). If someone is bad - he will always claim that he is good, but he might accuse other people of being bad.
– SugerBoy
Aug 2 at 15:23












@SugerBoy Then the only reliably way is using logic. More parameters and your general aim now are most important: Do we know (roughly) how the ratio truther to liar is? Do we want to find (a) single trustworthy person or assess as good as possible who is truther and who liar?
– Sudix
Aug 2 at 15:35




@SugerBoy Then the only reliably way is using logic. More parameters and your general aim now are most important: Do we know (roughly) how the ratio truther to liar is? Do we want to find (a) single trustworthy person or assess as good as possible who is truther and who liar?
– Sudix
Aug 2 at 15:35












Scratch that, graph theory might work as well
– Sudix
Aug 2 at 15:37




Scratch that, graph theory might work as well
– Sudix
Aug 2 at 15:37















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