github.com/moses-smt/vowpal_wabbit.git - Unnamed repository; edit this file 'description' to name the repository.

Age	Commit message (Collapse)	Author
2011-08-04	save command added: save_filename\|	Jake Hofman

2011-03-21	fix arm alignment bug from Jani and extra whitespace removal from sudarshan	John Langford

2011-01-20	made 29 bits correct and explicitly disabled greater.	John Langford

2010-09-24	optimizations for speed	John Langford

2010-04-20	deleted debian-specific and tweaked n/skip generation so it made sense. ↵	John Langford
	Must debug further.
2010-04-19	Supports signed differences in the cache format. This uses the ↵	Shravan M Narayanamurthy
	ZigZagEncoding & Decoding to convert signed integers to unsigned integers and vice versa essentially using the lsb to represent sign instead of msb. While encoding the signed differences are first converted to unsigned differences & then RLEd into the cache. While decoding the unsigned differences are RL decoded from the cache and converted to signed differences. A new option to sort the features disregarding order of occurrence is provided to allow better compression. Also fixes a bug in compressed option. Currently, reading from stdin doesn't work with compressed option turned on. So we check this and bail out with an error message. This is an effect of using zlib.
2009-12-31	Applied Shravan's zlib compression patch	John Langford

2009-12-11	Adding support for compression using zlib/gzip	Shravan M Narayanamurthy
	Abstracted all direct access to opening, closing, resetting, flushing, reading & writing files of io_buf into access through a function of io_buf which have all been declared virtual. Now that these accesses have been abstracted out, adding a new type of io_buf, in this case, comp_io_buf, is pretty easy. Just public inherit io_buf and override the default definitions of these virtual functions to work with compressed files. There is a nuance in this because of the current use of multiple files. The 'files' v_array is conveniently typed to int. So in the comp_io_buf, I hold a v_array of gzFiles whose indices are stored in 'files' v_array. Have introduced a new boolean flag compressed into parse_args. The input & output io_bufs in parser are now just pointers that will point to comp_io_buf if the compressed option is chosen. This is the root cause of most of the changes involving parser::input & parser::output. Because of the design of zlib which allows gzread to read from a normal file we can read from a mix of compressed and uncompressed files(cache) without extra logic.
2009-12-07	searching for strange heisenbug	John Langford

2009-12-05	debugged a bit	John Langford

2009-12-04	tweaked format for tag and label	John Langford

2009-12-01	fixed performance bug due to unnecessary sorting	John Langford

2009-10-18	Various bugfixes for cluster support	John Langford

2009-09-20	first compiling (but not debugged) cluster version.	John Langford

2009-08-31	Fixed bad input assignment bug.	John Langford

2009-08-31	debugging odd cluster bug	John Langford

2009-08-31	Reworked things so input and output are distinct.	John Langford

2009-08-23	Made binary mode sending work.	John Langford

2009-08-22	Merge branch 'master' into cluster	John Langford
	Conflicts: main.cc parse_example.cc vw.cc
2009-08-22	NaN check on input and making it so cache file is valid for smaller cache sizes.	John Langford

2009-08-17	First sending core.	John Langford

2009-08-01	Initial release of version 3.10. I've incorporated some of the	John Langford
	Gordon's changes.