On Dec 21, 2010, at 2:26 AM, Anders F Björklund wrote:
Jeff Johnson wrote:
Should make it into a generic library eventually, once this prototyping
is done... Amazing how many silly bitarrays and digests are out there,
like using scripted byte arrays and for instance MD5, for Bloom filters.
On Dec 20, 2010, at 7:01 PM, Anders F Björklund wrote:
Jeff Johnson wrote:
Should make it into a generic library eventually, once this prototyping
is done... Amazing how many silly bitarrays and digests are out there,
like using scripted byte arrays and for instance MD5, for Bloom filters.
On Dec 17, 2010, at 2:22 PM, Jeff Johnson wrote:
On Dec 17, 2010, at 1:48 PM, Per Øyvind Karlsen wrote:
So I guess there's something I'm not really fully grasping here...
See code attached...
Yes. You miss that you need to estimate the expected size of the
population you wish to
The bisection likely isn't worth worrying about until there is need. But
rpmbdUnion/rpmbfIntersect are useful operations on arrays of fixed size
Bloom filters no matter what.
One last hint I forgot (re using rpmbfIntersect)
Assuming that all of the Bloom filters are fixed size, then
one
2010/12/18 Jeff Johnson n3...@mac.com:
On Dec 17, 2010, at 2:22 PM, Jeff Johnson wrote:
On Dec 17, 2010, at 1:48 PM, Per Øyvind Karlsen wrote:
So I guess there's something I'm not really fully grasping here...
See code attached...
Yes. You miss that you need to estimate the expected
2010/12/15 Jeff Johnson n3...@mac.com:
On Dec 14, 2010, at 9:51 PM, Jeff Johnson wrote:
Download. uncompress. use for file dependencies.
I will take wagers on how much smaller the encoding is as
soon as you tell me what you choose for {n,p}.
There's an obvious generalization here for
On Dec 17, 2010, at 1:48 PM, Per Øyvind Karlsen wrote:
So I guess there's something I'm not really fully grasping here...
See code attached...
Yes. You miss that you need to estimate the expected size of the
population you wish to capture in a Bloom Filter:
size_t n = 0; /*
Jeff Johnson wrote:
I was recently looking at making a manifest for FreeBSD,
which consists of a simple files listing for *each package*.
ftp://ftp.freebsd.org/pub/FreeBSD/ports/amd64/packages-8.1-release/All/*.tbz
I was looking at the Slackware MANIFEST as a reference, which
is just a
On Dec 14, 2010, at 3:00 PM, Per Øyvind Karlsen wrote:
On a related note though I've started giving parentdir symlink deps
some more thoughts again though, skimming the surface on practical
issues and drawbacks of such as ie. the size of files.xml.lzma in
main/release currently being
2010/12/14 Jeff Johnson n3...@mac.com:
On Dec 14, 2010, at 3:00 PM, Per Øyvind Karlsen wrote:
On a related note though I've started giving parentdir symlink deps
some more thoughts again though, skimming the surface on practical
issues and drawbacks of such as ie. the size of
On Dec 14, 2010, at 4:49 PM, Per Øyvind Karlsen wrote:
The issues of the size of files.xml* and synthesis.hdlist* have nothing
whatsoever to do with parentdir/linkto dependencies.
But for being able to resolve these dependencies, one still needs the
metadata of files.xml, which
Jeff Johnson wrote:
There are some very simple data reductions on hierarchical
paths too. One of the best known is
Run a dictionary: assign an integer weighted by # of
occurences to favor small integers for frequently
encountered tokens between /.../ (all of usr and bin
On Dec 14, 2010, at 6:46 PM, Anders F Björklund wrote:
Jeff Johnson wrote:
There are some very simple data reductions on hierarchical
paths too. One of the best known is
Run a dictionary: assign an integer weighted by # of
occurences to favor small integers for frequently
Google said http://techreports.lib.berkeley.edu/accessPages/CSD-83-148.html
Finding Files Fast
Authors: Woods, James A.
Technical Report Identifier: CSD-83-148
January 15, 1983
Bingo. Off by a year, and the chloroxed neurons resisted
confusion with the other James Wood hash
2010/12/14 Jeff Johnson n3...@mac.com:
On Dec 14, 2010, at 4:49 PM, Per Øyvind Karlsen wrote:
The issues of the size of files.xml* and synthesis.hdlist* have nothing
whatsoever to do with parentdir/linkto dependencies.
But for being able to resolve these dependencies, one still needs the
On Dec 14, 2010, at 9:23 PM, Per Øyvind Karlsen wrote:
2010/12/14 Jeff Johnson n3...@mac.com:
On Dec 14, 2010, at 4:49 PM, Per Øyvind Karlsen wrote:
The issues of the size of files.xml* and synthesis.hdlist* have nothing
whatsoever to do with parentdir/linkto dependencies.
But for
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