3
# compares out-files (as created by Ereport.pl) from dir1/*.out and dir2/*.out
4
# for each effectiveness column computes the probability of the hypothesis
5
# "Both files have the same effectiveness"
7
# sign test is used to verify that test results are statistically
8
# significant to support the hypothesis. Function is computed on the fly.
10
# basic formula is \sum_{r=0}^R C_N^r 2^{-N}
11
# As N can be big, we'll work with logarithms
14
my $N=shift, $R=shift;
19
$sum+=exp(logfac($N)-logfac($r)-logfac($N-$r)-$N*$log2);
25
# for N<20 exact value from the table (below) is taken
26
# otherwise, Stirling approximation for N! is used
28
my $n=shift; die "n=$n<0" if $n<0;
29
return $logfactab[$n] if $n<=$#logfactab;
30
return $n*log($n)-$n+log(2*3.14159265358*$n)/2;
33
0, 0, 0.693147180559945, 1.79175946922805, 3.17805383034795,
34
4.78749174278205, 6.57925121201010, 8.52516136106541, 10.6046029027453,
35
12.8018274800815, 15.1044125730755, 17.5023078458739, 19.9872144956619,
36
22.5521638531234, 25.1912211827387, 27.8992713838409, 30.6718601060807,
37
33.5050734501369, 36.3954452080331, 39.3398841871995, 42.3356164607535,
40
############################# main () ###############################
41
#$p=shift; $m=shift; $p-=$m;
43
# print "1 > 2 [+$p-$m]: ", probab($p+$m, $m), "\n";
45
# print "1 < 2 [+$p-$m]: ", probab($p+$m, $p), "\n";
47
# print "1 = 2 [+$p-$m]: ", probab($p+$m, $m), "\n";
51
die "Use: $0 dir1 dir2\n" unless @ARGV==2 &&
52
-d ($dir1=shift) && -d ($dir2=shift);
53
$_=`cd $dir1; echo *.out`;
58
open(OUT1,$out1="$dir1/$file.out") || die "Cannot open $out1: $!";
59
open(OUT2,$out2="$dir2/$file.out") || die "Cannot open $out2: $!";
62
while(!eof(OUT1) || !eof(OUT2)) {
63
$_=<OUT1>; @l1=split; shift @l1;
64
$_=<OUT2>; @l2=split; shift @l2;
66
die "Number of columns differ in line $.\n" unless $#l1 == $#l2;
69
$p[$_]+= $l1[$_] > $l2[$_];
70
$m[$_]+= $l1[$_] < $l2[$_];
75
$pp[$_]+=$p[$_]; $mm[$_]+=$m[$_];
76
$total[$_].=rep($file, ($#l1 ? $_ : undef), $p[$_], $m[$_]);
83
rep($total[$_], ($#l1 ? $_ : undef), $pp[$_], $mm[$_]);
87
my ($test, $n, $p, $m, $c, $r)=@_;
89
if ($p>$m) { $c=">"; $r="+"; }
90
elsif($p<$m) { $c="<"; $r="-"; }
91
else { $c="="; $r="="; }
92
$n=" $n: " if defined $n;
93
printf "%-8s $n $dir1 $c $dir2 [+%03d-%03d]: %16.15f\n",
94
$test, $p, $m, probab($p+$m, ($p>=$m ? $m : $p));