NAME¶
TM::Analysis - Topic Maps, analysis functions
SYNOPSIS¶
use TM::Materialized::AsTMa;
my $tm = new TM::Materialized::AsTMa (file => 'test.atm');
$tm->sync_in;
Class::Trait->apply ($tm, 'TM::Analysis');
print Dumper $tm->statistics;
print Dumper $tm->orphanage;
DESCRIPTION¶
This package contains some topic map analysis functionality.
INTERFACE¶
- statistics
- This (currently quite limited) function computes a reference to hash
containing the following fields:
- "nr_toplets"
- Nr of midlets in the map. This includes ALL midlets for topics and also
those for assertions.
- "nr_asserts"
- Nr of assertions in the map.
- "nr_clusters"
- Nr of clusters according to the "cluster" function elsewhere in
this document.
- orphanage
- This computes all topics which have either no supertype and also those
which have no type. Without further parameters, it returns a hash
reference with the following fields:
- "untyped"
- Holds a list reference to all topic ids which have no type.
- "empty"
- Holds a list reference to all topic ids which have no instance.
- "unclassified"
- Holds a list reference to all topic ids which have no superclass.
- "unspecified"
- Holds a list reference to all topic ids which have no subclass.
Optionally, a list of the identifiers above can be passed in so that only that
particular information is actually returned (some speedup):
my $o = TM::Analysis::orphanage ($tm, 'untyped');
- entropy
- This method returns a hash (reference) where the keys are the assertion
types and the values are the individual entropies of these assertion
types. More frequently used (inflationary) types will have a lower value,
very seldomly used ones too. Only those in the middle count most.
SEE ALSO¶
TM
COPYRIGHT AND LICENSE¶
Copyright 20(0[3-68]|10) by Robert Barta, <drrho@cpan.org>
This library is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.