I saw some discussion that indicated vw was in the process of implementing l1 regularization. What is the status? Regards, -Sanmi...
169
Breno Faria
brenoaf
Jun 17, 2011 4:24 pm
Thanks a lot!...
168
dfrankow
dfrankow@...
Jun 17, 2011 4:13 pm
... Ugh, Yahoo Groups web interface removes all the formatting, and Python is whitespace sensitive. I forked vowpal_wabbit, and added vw-printtopics.py to utl,...
167
dfrankow
dfrankow@...
Jun 17, 2011 3:54 pm
Turns out you cannot extract attachments from Yahoo Groups, so by request, I post the full text of vw-printtopics.py below. It has not been thoroughly tested....
166
Matt Hoffman
flashrefuse
Jun 15, 2011 10:35 pm
Cool! This sort of thing is pretty much all I use perl for these days, so it's good to know. Matt...
165
Ariel Faigon
ariel_vw
Jun 15, 2011 10:31 pm
Unrelated to vw, but perhaps useful to know that the perl one-liner: perl -e 'while (<STDIN>) { $_ =~ s/\d+ /| /; print $_; }' ... Can be shortened into: perl...
164
Matt Hoffman
flashrefuse
Jun 15, 2011 9:37 pm
Hi Dan, The high-level question is a pretty deep one, and is accumulating a growing literature. Basically, LDA gives you what it gives you, and if you're not ...
163
Matt Hoffman
flashrefuse
Jun 15, 2011 9:22 pm
Hi Dan, Thanks a lot for posting your updated vw-printtopics.py! I just tested it on the output of vw --lda fit to the AP corpus, and it works great. You can ...
162
Dan Frankowski
dfrankow@...
Jun 15, 2011 8:06 pm
If I run an LDA, how can I tell if the results are good? Eyeballing important topic words is one way. However, if they are not good, it would be nice to have...
161
Dan Frankowski
dfrankow@...
Jun 15, 2011 7:54 pm
Thanks for your work on LDA in Vowpal. After running vw LDA, there is a topics.dat file that I'd like to inspect. First, the output is described in video...
160
dfrankow
dfrankow@...
Jun 15, 2011 4:12 pm
Thanks for your reply. The 5.1 version I downloaded from Github does not have that flag. JohnLangford-vowpal_wabbit-6215191 % ./vw foo.txt --lda 100...
159
John Langford
john_c_langford
Jun 15, 2011 1:32 pm
This is a trick we used when using VW as a library. In essence, we take advantage of the hashing trick by specifying an 'offset' to each of the feature...
158
Brian Merrell
merrellbva
Jun 15, 2011 5:39 am
John, How does one reuse the same set of features (in a cache) for multiple predictions (item #3)? I have various labels to apply to the same set of ...
157
Matt Hoffman
flashrefuse
Jun 14, 2011 10:44 pm
Hi Dan, That demo is a little out of date—we've since switched to a slightly less ad hoc method of outputting topics. Check out the slides at ...
156
Dan Frankowski
dfrankow@...
Jun 14, 2011 10:35 pm
Thanks for your work in online LDA. I watched Matt's video at http://videolectures.net/nipsworkshops2010_langford_vow/. I downloaded Vowpal 5.1 from Github,...
155
ipanalege
ipanalege@...
Jun 14, 2011 9:30 pm
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154
Dan Frankowski
dfrankow@...
Jun 14, 2011 3:25 pm
First, a warning from compiling: g++ -Wall -ffast-math -D_FILE_OFFSET_BITS=64 -I /home/dfranko/ArtDFranko/src/Boost/build/include -g -O0 -c parse_args.cc -o ...
153
John Langford
john_c_langford
Jun 14, 2011 12:59 am
I have 1.40.0 on my desktop and 1.37.0 on my laptop. Boost program_options has proven relatively unreliable, so I'm not too shocked. If you do: make clean ...
152
Dan Frankowski
dfrankow@...
Jun 14, 2011 12:43 am
Good one. It built. Unfortunately, now it SEGV-s: JohnLangford-vowpal_wabbit-6215191 % ./vw zsh: segmentation fault ./vw JohnLangford-vowpal_wabbit-6215191 %...
151
John Langford
john_c_langford
Jun 13, 2011 10:44 pm
You have an old g++ that doesn't support -march=native. Remove that from the Makefile and try again. -John...
150
dfrankow
dfrankow@...
Jun 13, 2011 10:23 pm
Tried downloading the latest version and "make". Didn't work (see below). Looked in README. Just talks about how to get code, not build it. Tried looking for...
149
John Langford
john_c_langford
Jun 12, 2011 11:32 pm
For the second question, did you actually test the classification error rate, or did you assume the loss was large? VW outputs the dot product before sending...
148
Nikos Karampatziakis
nikos.karamp...
Jun 12, 2011 12:23 am
Hi Rob, First, specifying --adaptive makes VW ignore --power_t. Adaptive takes care of decaying by itself. printing power_t = 0 is a little misleading though. ...
147
Rob Speer
rspeer@...
Jun 11, 2011 8:42 pm
I have two questions that I'm joining together because my hunch is that they're related. My first question: I believe from the documentation that I want to be ...
146
ilatebuqo
ilatebuqo@...
Jun 11, 2011 1:18 pm
Hi! Young girl invited You to the Hot Video Chat. Please follow this link to communicate. Find Hot Friend <http://twurl.nl/1y1lp6>...
145
John Langford
john_c_langford
Jun 10, 2011 1:16 pm
Hi Robert, I believe you are quite right about the need to make things usable in a library. There are a few structural complications with the current code....
144
afazocaho
afazocaho@...
Jun 10, 2011 9:30 am
Hi! Young girl invited You to the Hot Friend Finder. Please follow this link to communicate. Find Hot Friend <http://byjukih1543.100freemb.com/atvge-084.html>...
143
Bharath Krishnan
cqbkrishnan
Jun 4, 2011 1:26 am
Hi John, It apparently was a feature. Here is a one-liner to fix this on boost versions 1.42 (and probably 1.43). The feature does not exist in 1.46. diff...
142
John Langford
john_c_langford
Jun 3, 2011 9:47 pm
Matt, it looks like there is some significant 32bit vs. 64bit weirdness in the LDA code. Do you know what it is? -John...
141
John Langford
john_c_langford
Jun 3, 2011 6:15 pm
This looks like a Boost bug to me, which surprises me a bit---I expected Boost to be pretty stable. We could imagine tweaking the arguments to get around the...
