readme2

基于稀疏网络的精选机器学习模型

INSTALLING AND USING SNOW; CHANGES TO SNOW

This README has three sections.  The first deals with installing this 
version of SNoW.  The second indicates how to #include its classes 
in your code, or rather, how to tell the compiler where to find them.  
The final section indicates the major changes that have been made in
this version of SNoW.



1. INSTALLING SNOW

****IMPORTANT NOTE****
You need to change one line in the Makefile: you must specify the 
absolute pathname to the directory in which you are installing libsnow.a. 
The location of this change is indicated in the Makefile.  

****IMPORTANT NOTE****
If you have problems compiling, try looking at the Makefile: there are 
some suggestions in it for minor changes (i.e. commenting out certain lines)
that should fix most problems.



2. USING SNOW CLASSES

The snow executable can be used just as older versions of SNoW could (as 
described in the SNoW User Guide that comes with this distribution) but you
can now more easily use SNoW and its components in your own C++ code.

It's easy to use classes from the snow class library (libsnow.a).
In the code itself, #include the class headers you need, just as you normally
would.  You then need to write the following entries in your Makefile:

1. Declare a parameter for the absolute path to the directory in which you 
   installed libsnow.a, e.g.

PATHTOLIBSNOW = /home/msmith/libsnow/

2. Declare a parameter for the absolute path to the directory in which you
   put the header files for SNoW (by default, all the files are installed
   in the same directory, but you may want to move the source and header files
   to different locations once SNoW is installed), e.g.

PATHTOHEADERS = /home/msmith/libsnow/headers/

3. When you compile a module that uses a class from the SNoW library, 
   tell the compiler where to find the headers by using '-I$(PATHTOHEADERS)',
   and where the SNoW library is with '-L$(PATHTOLIBSNOW) -lsnow', e.g.

my_executable : Main.o
	$(CXX) -I$(PATHTOHEADERS) -o my_executable Main.o \
 	-L$(PATHTOLIBSNOW) -lsnow



CHANGES TO THIS VERSION OF SNOW

Aside from creating a library on installation and allowing you to use a 
Snow class, the function EvaluateExample has been added.  This allows
you to classify one example at a time, and is intended to replace the
need for SNoW's server mode.  

This new SNoW distribution should be considered a Beta version; please
report bugs to me at the email address below.  If you run into problems,
you may want to try using version 3.1.4, available from the SNoW website
(accessible via http://l2r.cs.uiuc.edu/~cogcomp/).  You can also check
that site for other resources, such as the SNoW mailing lists, our
feature extractor (FEX) and various tools for processing text for use
with FEX and SNoW.

Mark Sammons
[e-mail]