in reply to (contest) Help analyze PM reputation statistics
If we consider the node reputation as a random variable, we can perform some interesting analyses. The entropy of the reputation random variable is 5.27, meaning that the theoretical lower bound for storing the information contained in the node reputations is 5.27 bits per post. So when someone says "node reputation isn't worth 2 bits," they're wrong -- it is actually worth at least 5.27 bits. ;)
An interesting statistic would be whether the entropy of the reputation random variable is going up or down over time. Then we could say whether node reputation was becoming more or less meaningful.use List::Util 'sum'; my $sum = sum values %rep_stats; my $entropy = sum map { -($_/$sum) * log($_/$sum) / log(2) } values %rep_stats; printf "Total entropy: %.05f\n", $entropy;
blokhead
|
---|
Replies are listed 'Best First'. | |
---|---|
Re^2: (contest) Help analyze PM reputation statistics
by sintadil (Pilgrim) on Sep 15, 2004 at 00:15 UTC | |
by blokhead (Monsignor) on Sep 15, 2004 at 03:29 UTC | |
by sintadil (Pilgrim) on Sep 15, 2004 at 04:48 UTC | |
by ysth (Canon) on Sep 15, 2004 at 08:07 UTC |
In Section
Perl Monks Discussion