$VAR1 = [ { 'ID' => [ '1', 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1 ], 'Circle' => 4, 'Triangle' => 0, 'Rectangle' => 4, 'Square' => 4 }, { 'ID' => $VAR1->[0]{'ID'}, 'Circle' => 4, 'Triangle' => 0, 'Rectangle' => 0, 'Square' => 4 }, #### use strict ; use warnings ; use Data::Dumper ; open my $dataIn1, "<", "Attributes_ID.txt" or die "NO ID FILE: $!"; open my $dataIn2, "<", "Attributes.txt" or die "NO ATTR FILE: $!"; my $data = () ; my $attrs = () ; sub getdata { my ( $fileName, $type ) = split /\t/, $_[1] ; push @{$data}, $type unless !defined $fileName ; } sub getattrs { my @attrs = split /\t/, $_[1] ; #shift @attrs ; push @{$attrs}, \@attrs unless !defined $attrs[0] ; } while( <$dataIn1> ) { chomp ; getdata( 0, $_ ) ; } while( <$dataIn2> ) { chomp ; getattrs( 0, $_ ) ; } my @result; for( my $j = 0 ; $j < @{$attrs} ; ++$j ) { my %subres ; @subres{@{$data}} = ( 0 ) x @{$attrs->[0]} ; $subres{ID} = $attrs->[0] ; for( my $i = 1 ; $i < @{$attrs->[$j]} ; ++$i ) { if ( $attrs->[$j][$i] == 1 ) { ++$subres{ $data->[$i-1]} ; } } ; push @result, \%subres ; } print Dumper(\@result) ; #### {5}{ 'Circle' => 0, 'Triangle' => 0, 'Rectangle' => 0, 'Square' => 0 }, {6} { 'Circle' => 0, 'Triangle' => 0, 'Rectangle' => 0, 'Square' => 0 }, {7} { 'Circle' => 4, 'Triangle' => 4, 'Rectangle' => 0, 'Square' => 4 }, #### FILE CATEGORY ATTRIB SCORE 1.file.ext Square 1 1 2.file.ext Triangle 1 0 3.file.ext Circle 1 1 4.file.ext Square 1 1 5.file.ext Triangle 1 0 etc...