0.15 8.14.2004

• Changed hard-coded 'D' and 'T' prefixing to use nodeify subroutine
• Added connectedcomponents method
• Began adding support for file-based hashes using MLDBM, enabling very

  large collections.

• Minor bugfixes, now tests for D: and T: prefixes explicitly,

  instead of assuming that those are the only node types.

0.14 7.13.2004

• Fixed bug in orphan removal on node delete operation
• Updated 'store' method to use network order
• Fixed bug where spurious 'D:' and 'T:' in doc titles misled term/doc list methods
• Added find_by_title method and tests

0.13 3.14.2004

• Changed interface on 'delete' to support term node deletion
• Updated invariant.t and add_subtract.t with interface change

0.12 3.13.2004

• Added intersection method
• Added merge method

0.11 3.11.2004

• Added add_file method at suggestion of Aaron Cope
• Fixed bug in term_list method that would always return full list

0.10 3.03.2004

• Made adding content-free document a fatal error
• Added simple_search method
• Added load_from_dir constructor
• Added dependency on File::Find
• Normalize all terms to lower case

0.09 2.23.2004

• It's now possible to add, delete, and update individual docs
• Some regrettable but correct interface changes
• Fixed serious bug where weighting was not being recalculated
• Graph can now be rebalanced by hand
• Adjusted graph to store lcounts as well as weights
• Made global weighting optional
• Broke C implementation :-(
• Added new test suites

0.08 ( not released )

• Reduced size of Node struct in XS code (removed type field)
• XS and Perl code now preallocates space when reading from TDM file
• Added max_depth attribute, to limit search depth

0.07

• Altered energy distribution scheme to more effective log(degree)+1

  (thanks to Martin Spernau for testing this)

0.06 7.23.2003

• Merged in XS implementation from Schuyler Erle
• Fixed global weighting bug where counts and weights were being computed in

  the same loop

• Updated test cases to reflect bugfixes
• Added XS/pure Perl switch in constructor
• Updated test cases to test both XS and pure Perl versions

0.05 7.17.2003

• Module now inherits from Storable.pm
• Added "find similar" method for document similarity search
• Added "mixed_search" method for term + document search;
• Edges are now normalized around each document
• Renamed TDM load method to "load_from_tdm"
• Singletons now inhabit the graph, instead of living in a lookup table
• Special check prevents bounce-back from singletons
• Many more test cases
• Two levels of debugging output
• Added credits for John Cuadrado and Scott Preece

0.04 7.14.2003

• Applied patches from Leon Brocard
  • actual test cases
  • fixed typo that broke module
  • cleanup of debugging flag and output
  • added dependency on Test::More

0.03 7.11.2003

• Added check to make sure no edges can have greater than unit weight

0.02 7.11.2003

• Added interface for just adding document titles + word lists, and having the sucker build the search engine for you. Earlier TDM format universally reviled by Perl community...
• Added some POD and minor code patches from Ken Williams

0.01 6.01.2003

• And Maciej said, "Let there be Search::ContextGraph"!