Re: Errors when trying to use a toolkit
On Jun 7, 8:28 am, "Giuseppe.G." <giuseppegall...@gmail.com> wrote:
I need to learn and use a machine learning toolkit, maxent
http://homepages.inf.ed.ac.uk/s0450736/maxent_toolkit.html
that provides a framework for using discriminative learning in several
domains, mine being NLP.
Following the manual, I successfully downloaded the package under my
home directory, and installed the toolkit: basically what I did was to
type:
(/home/giu/maxent) ./configure
(/homegiu/maxent/) make
(/home/giu/maxent/) sudo make install
The "usage" section in the manual then reports that in order to use
the toolking one must simply add the following in his code:
//-------------------------------
#include <maxent/maxentmodel.hpp>
using namespace maxent;
MaxentModel m;
//-------------------------------
At this point what I do is creating a very basic .cpp file under my
home directory (/home/giu/tempcode/testmaxent.cpp) in which I put
//-----------------------------------------------
#include<iostream>
#include<maxent/maxentmodel.hpp> // is this path correct?
using namespace maxent;
MaxentModel m;
int main(){..}
//-------------------------------------------------
what I get unfortunately is a lot of errors. This is the output of the
compiler:
//-------------------------------------------
In file included from /usr/local/include/maxent/maxentmodel.hpp:42,
from ../src/testmaxent.cpp:3:
/usr/local/include/maxent/meevent.hpp:97: error: expected initializer
before =91<' token
The problem appears to be that the maxentmodel.hpp header file
includes the "mmeevent.hpp" file with a user - instead of a system -
#include directive (that is, the included file is surrounded by ""
instead of <>). Since the meevent.hpp file is located in the same
"maxent" directory, the apparent fix would be to add the "maxent"
directory to the list of user directories for the C++ compiler to
search. With gcc, the "iquote" command line option can be used to
specify user directories. For example:
g++ -iquote /usr/local/include/maxent testmaxent.cpp
Greg
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