Comments (6)
Wasn't sure how to chage the Type/Priority.
Original comment by [email protected]
on 26 Feb 2009 at 11:36
from mitlm.
Hi perpperbc,
I am having difficulty replicating the problem. The feature skipped messages
indicate that there is an n-gram in the feature file that do not exist in the
n-gram
model. Currently, the only way I can think where this occurs is if the
.effcounts
are computed for higher order n-grams (ex. 4) than the target n-gram model (ex.
3).
In this case, although you will get a lot of feature skipped warning messages,
the
target LM should still be computed correctly.
Can you please confirm if this is the cause of the problem? Regardless, I will
modify the warning messages to display more information and summarize the
warnings
beyond 3 or so messages.
P.S. You can change the type and priority by clicking on the label itself.
Original comment by [email protected]
on 27 Feb 2009 at 5:03
- Changed state: Accepted
from mitlm.
Original comment by [email protected]
on 27 Feb 2009 at 5:03
from mitlm.
That seems like it would have been the problem, as I had forgotten to to use
the the
-o 6 flag, and all the component models were 6-gram. Unfortunately, I got a
segfault
when I added the flag.
Interpolating component LMs...
Tying parameters across n-gram order...
Segmentation fault
After removing, which became 5 ~1GB), I still got a very large number of
"Feature
skipped." error messages. There were also some "Feature value
pow2:log1p:sumhist:literal-all.effcounts exceed 20.0" after each effcounts file
was
said to be loaded. It then segfaulted again, after having only read 3 of 5
feature
count files.
I am running it one more time with only 4 models, and it has been streaming
"Feature
skipped" messages for about half an hour ( though it hasn't crashed). I will
update
if anything interesting happens with it.
I also ran a CM build with only two models "interpolate-ngram -lm "1.lm, 2.lm"
-interpolation CM -op dev.txt -wl CM.lm -interpolation-features
"log:sumhist:%s.corp.txt" -o 6",
got 22 Feature skipped messages, and it completed.
Are there any key variables I could have printed at the same time as the
"Feature
skipped." message in order to get more insight into what is happening?
On a side note, the "Feature skipped." messages seem to be printed directly to
the
screen and not to stderr or stdout, as I cannot redirect them.
Original comment by [email protected]
on 27 Feb 2009 at 8:01
from mitlm.
I noticed my count files I had also failed to make 6-gram, so I rebuilt these,
but
the error messages persisted. I removed the error message from the code,
rebuilt, and
restarted the 4-model build, and it completed with decent success after about 17
minutes (it seemed the error message was slowing things down a lot). I removed
the
log^2 from the features however, because of the error messages, and it had not
completed after about 80 minutes. Still unsure as to why the error messages
occur,
however.
Original comment by [email protected]
on 27 Feb 2009 at 10:13
from mitlm.
One more comment. Even though I made it go through ignoring the errors, it
seems they
still represent some problem, as my perplexities are significantly higher than
LI for
CM (CM-52 vs LI-46, CM-37 vs LI-33), and marginally lower to marginally higher
than
LI for GLI (GLI-48.5 vs LI-46.,3, GLI-32.3 vs LI 33.3) with log:sumhist.
Original comment by [email protected]
on 27 Feb 2009 at 11:00
from mitlm.
Related Issues (20)
- estimate-lm segfaults when specifying a vocab file HOT 4
- Compiling on Mac OS X Lion fails HOT 4
- estimate n-gram cannot find libmitlm.so.0 HOT 2
- smoothing failed when saving
- Fail to install mitln.0.4 on Cygwin HOT 2
- build fails due to ambiguous call HOT 3
- compilation error because an included file "unordered_map" is not found HOT 8
- Compilation error related to the 'fortran_wrapper'
- Error loading arpa format lm HOT 1
- ./.libs/libmitlm.so: undefined reference to `__cxa_get_exception_ptr'
- maximum line length HOT 2
- Release 0.4.1Steps to build MITLM trunk on OS X Yosemite HOT 2
- cutoff
- Tokens beginning with # cause a crash when using count files
- Crash where suffix of an ngram not present in count file
- LM building error in makefile HOT 5
- Where is Lectures.txt?
- interpolate-ngram: mixing lms with numerical values is not implemented or not?
- Installation issues. estimate-ngram: command not found HOT 2
- Interpolation assertion `!anyTrue(isnan(bows))' failed.
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