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enabled ID tracking forums. Fixed thresholds for anti-spam forums. Changed computation of reputation scored

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This commit is contained in:
csoler 2015-10-26 23:38:10 -04:00
parent b009c1135f
commit c7d0e4cb35
14 changed files with 130 additions and 55 deletions
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64
libretroshare/src/services/p3gxsreputation.cc
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@ -132,13 +132,13 @@ static const int kMaximumPeerAge = 180; // half a
static const int kMaximumSetSize = 100; // max set of updates to send at once.
static const int ACTIVE_FRIENDS_UPDATE_PERIOD = 600 ; // 10 minutes
static const int ACTIVE_FRIENDS_ONLINE_DELAY = 86400*7 ; // 1 week.
static const int kReputationRequestPeriod = 600; // 10 mins
static const int kReputationStoreWait = 180; // 3 minutes.
static const int kReputationRequestPeriod = 60; // 10 mins
static const int kReputationStoreWait = 18; // 3 minutes.
static const float REPUTATION_ASSESSMENT_THRESHOLD_X1 = 0.5f ; // reputation under which the peer gets killed
static const float REPUTATION_PGP_LINKED_ID_BIAS = 0.2f ;
static const float REPUTATION_PGP_KNOWN_ID_BIAS = 0.3f ; // so known pgp-linked ids go up to +0.5f
static const float REPUTATION_FRIEND_VARIANCE = 2.0f ;
static const float REPUTATION_FRIEND_VARIANCE = 3.0f ;
p3GxsReputation::p3GxsReputation(p3LinkMgr *lm)
@ -958,24 +958,56 @@ void Reputation::updateReputation()
mFriendAverage = 1.0f ;
else
{
if(friend_total > 0)
mFriendAverage = 1.0+exp(-friend_total / REPUTATION_FRIEND_VARIANCE) ;
else
mFriendAverage = 1.0-exp( friend_total / REPUTATION_FRIEND_VARIANCE) ;
static const float REPUTATION_FRIEND_FACTOR_ANON = 2.0f ;
static const float REPUTATION_FRIEND_FACTOR_PGP_LINKED = 5.0f ;
static const float REPUTATION_FRIEND_FACTOR_PGP_KNOWN = 10.0f ;
// For positive votes, start from 1 and slowly tend to 2
// for negative votes, start from 1 and slowly tend to 0
// depending on signature state, the ID is harder (signed ids) or easier (anon ids) to ban or to promote.
//
// when REPUTATION_FRIEND_VARIANCE = 3, that gives the following values:
//
// total votes | mFriendAverage anon | mFriendAverage PgpLinked | mFriendAverage PgpKnown |
// | F=2.0 | F=5.0 | F=10.0 |
// -------------+----------------------+---------------------------+--------------------------+
// -10 | 0.00 Banned | 0.13 Banned | 0.36 Banned |
// -5 | 0.08 Banned | 0.36 Banned | 0.60 |
// -4 | 0.13 Banned | 0.44 Banned | 0.67 |
// -3 | 0.22 Banned | 0.54 | 0.74 |
// -2 | 0.36 Banned | 0.67 | 0.81 |
// -1 | 0.60 | 0.81 | 0.90 |
// 0 | 1.0 | 1.0 | 1.00 |
// 1 | 1.39 | 1.18 | 1.09 |
// 2 | 1.63 | 1.32 | 1.18 |
// 3 | 1.77 | 1.45 | 1.25 |
// 4 | 1.86 | 1.55 | 1.32 |
// 5 | 1.91 | 1.63 | 1.39 |
//
// Banning info is provided by the reputation system, and does not depend on PGP-sign state.
//
// However, each service might have its own rules for the different cases. For instance
// PGP-favoring forums might want a score > 1.4 for anon ids, and >= 1.0 for PGP-signed.
float reputation_bias ;
if(mIdentityFlags & REPUTATION_IDENTITY_FLAG_PGP_KNOWN)
reputation_bias = REPUTATION_FRIEND_FACTOR_PGP_KNOWN ;
else if(mIdentityFlags & REPUTATION_IDENTITY_FLAG_PGP_LINKED)
reputation_bias = REPUTATION_FRIEND_FACTOR_PGP_LINKED ;
else
reputation_bias = REPUTATION_FRIEND_FACTOR_ANON ;
if(friend_total > 0)
mFriendAverage = 2.0f-exp(-friend_total / reputation_bias) ;
else
mFriendAverage = exp( friend_total / reputation_bias) ;
}
// now compute a bias for PGP-signed ids.
float pgp_bias = 0.0f ;
if(mIdentityFlags & REPUTATION_IDENTITY_FLAG_PGP_LINKED)
pgp_bias += REPUTATION_PGP_KNOWN_ID_BIAS ;
if(mIdentityFlags & REPUTATION_IDENTITY_FLAG_PGP_KNOWN)
pgp_bias += REPUTATION_PGP_LINKED_ID_BIAS ;
if(mOwnOpinion == RsReputations::OPINION_NEUTRAL)
mReputation = std::max(0.0f,std::min(2.0f,mFriendAverage + pgp_bias)) ;
mReputation = mFriendAverage ;
else
mReputation = (float)mOwnOpinion ;
}