no-one has ever mentioned it 'til now so unlikely to have be used a lot.
with advent of cube pruning now, those limits and thresholds gets in the
way as much as they help
On 29/03/2012 21:17, Lane Schwartz wrote:
So I just looked and here's what the Pharaoh manual says about
ttable-threshold:
"-ttable-threshold - minimum probability for a phrase translation
entry (default 0, unlimited)"
When I run Moses with no parameters here's what it tells me about
ttable-limit:
"-ttable-limit (ttl): maximum number of translation table entries per
input phrase"
I'm wondering if ttable-threshold was just dropped because no one ever
set it to anything other than zero.
Lane
On Thu, Mar 29, 2012 at 10:10 AM, Hieu Hoang <[email protected]
<mailto:[email protected]>> wrote:
that ttable threhold is
[ttable-limit]
for as long as i remember.
yep. I put in the check, couldn't believe it wasn't there before.
On 29/03/2012 20:50, Lane Schwartz wrote:
On Thu, Mar 29, 2012 at 9:24 AM, Lane Schwartz
<[email protected] <mailto:[email protected]>> wrote:
A colleague of mine was just trying out a new git checkout of
moses with an old config file that he had. The old config
file had a line for "[ttable-threshold" and the new checkout
of moses complained that that flag didn't exist.
I spent some time looking through the git logs and checking
out old versions of moses, and strangely I can't seem to find
any old versions of moses with that parameter present.
Searching on google for "moses ttable-threshold" reveals some
hits, most notably the example Moses config file from the JHU
summer workshop
(http://www.statmt.org/jhuws/?n=Experiments.EPPS).
Does anyone know what happened to the ttable-threshold
parameter? Did it get renamed, or removed?
Well, I figured out why the error message is being thrown. On
2011-06-11 Hieu added a check in Parameter.cpp to verify that
each parameter in the ini file is a real, valid, known parameter.
Prior to that, I guess unknown parameters were silently ignored.
I looked through the history of Parameter.cpp and StaticData.cpp
going back to the first revision of Moses on sourceforge, and
didn't find any mention of a ttable-threshold parameter.
Based on that, and the fact that the parameter appears to have
been present at the JHU summer workshop
(http://www.statmt.org/jhuws/?n=Experiments.EPPS) I'm assuming
that ttable-threshold was a Pharaoh parameter that was removed or
renamed prior to Moses being put up on Sourceforge.
If anyone knows, I would still be interested in knowing if
ttable-threshold was removed or if it was renamed to something else.
Thanks,
Lane Schwartz
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