- Modify the "CODEROOT" variable in makefile.inc to point to the root of your code base if necessary.

- Integrate your own implementation of rbf to folder, "rbf".
  
- Implement the Index Manager (IX):

   Go to folder "ix" and type in:

    make clean
    make
    ./ixtest_01

   The program should work.  But it will fail. 
   You are supposed to implement the API of the index manager defined in ix.h and pfm.h

   Refer to the each test case for detail. Please do not combine each test case into one file.

- By default you should not change those functions of the IndexManager and IX_ScanIterator class defined in ix/ix.h. 
  If you think some changes are really necessary, please contact us first.