Mapping of Subject Field

Mapping table

NASA STI

NCSTRL+ Subject

The Algorithem used in Subject Field mapping.

• get the NASA STI NO, this should be XX or XX-XX format.

• get the NCSTRL+ top level subject by the STI NO. Most of them are perfectly same, except the MATHEMATICAL AND COMPUTER SCIENCES field in STI. In ncstrl+ they are seperate. Now I use Computer Science, this will result in  all the mathematical  is mapped to Computer Science.   Now we get some format such as NCSTRLPLUS-ARCHIVALTYPE:: Aeronautics

• get the NCSTRL+ detail level subject by search the mapping table. if find, append the detail level subject to the archivaltype field, such as NCSTRLPLUS-ARCHIVALTYPE:: Aeronautics/Aerodynamics. If not find , do nothing.

• If the mapping table is perfect, we can get the perfect result by this method. Now the mapping table is just a simple test.