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Erik Garrison [Mon, 14 Mar 2011 00:30:43 +0000 (20:30 -0400)]
regex against article diffs and checksum-based revert detection
Erik Garrison [Sun, 13 Mar 2011 18:17:39 +0000 (14:17 -0400)]
added (broken, but running) diff routines for block-level diffs
Erik Garrison [Fri, 28 Jan 2011 12:19:27 +0000 (07:19 -0500)]
add md5sum, entropy
Erik Garrison [Sun, 24 Oct 2010 20:28:15 +0000 (16:28 -0400)]
added shannon_H entropy metric for each revision
Erik Garrison [Sun, 24 Oct 2010 20:10:01 +0000 (16:10 -0400)]
resolved performance bug in cdata handling of revision text
Previously, when appending character data to long text fields, each call
to charhndl required a call to strlen on the text field to which the new
character data was to be appended. This is O(N^2)! The problem was
most severe for vandalized articles with inlined HTML, but it ultimately
affected all data parsing as expat calls the charhndl function every
time it resolves a default XML entity.
By tracking the length of each field in our revisionData structure and
using a custom strncat-type function, it's possible to avoid this
overhead. Now, we are pipe-buffer-bound when processing a 7z-compressed
mediawiki dump. The current simple english wiki dump takes about 3
minutes to process on my 2x2.4ghz laptop, even when handling all text
data. Just decompressing it to /dev/null takes around 1 minute.
Erik Garrison [Sat, 23 Oct 2010 22:57:50 +0000 (18:57 -0400)]
buffer storage of text data, structure cleanup
Using a 2MB fixed-size buffer for the article text data speeds up
processing dramatically when text data is not thrown away.
Erik Garrison [Mon, 11 Oct 2010 17:53:07 +0000 (13:53 -0400)]
properly implemented text and comment omission flag
Erik Garrison [Thu, 7 Oct 2010 12:46:50 +0000 (08:46 -0400)]
moved from gcc to g++
Erik Garrison [Thu, 7 Oct 2010 04:55:57 +0000 (00:55 -0400)]
Revert "changed compilation flags to -O3"
This reverts commit
315071f4419c2e34fd367e09d24818807353c91e.
Erik Garrison [Thu, 7 Oct 2010 04:52:10 +0000 (00:52 -0400)]
changed compilation flags to -O3
Erik Garrison [Thu, 7 Oct 2010 04:50:04 +0000 (00:50 -0400)]
parseData -> revisionData
Erik Garrison [Thu, 7 Oct 2010 04:44:59 +0000 (00:44 -0400)]
first produced in the summer of 2006, finally published!
Benjamin Mako Hill || Want to submit a patch?