In 1971 Derek Austin Evaluated this indexing system
It is being used in British national bibliography
Levels of Operations:
Human (subject statement is analyzed into a set of roles at the human level)
Computer (Manipulated and programmed by the computers)
PERCIS GENERAL FORMAT:
LEAD-------- QUALIFER
DISPLAY
0 = Location
1= Key System
P= Part or Property
2= Action or Effort
Example:
Title: Training of Cricket Players in India.
0 = INDIA
1= CRICKET
P= PLAYERS
2= TRAINING
STEP: 1
LEAD -------------QUALIFIER
INDIA (0) CRICKET(1) PLAYERS(P) TRAINING(2)
DISPLAY
STEP:2
LEAD------------- QUALIFER
CRICKET, INDIA
PLAYERS TRAINING --- DISPLAY
STEP:3
LEAD--------- QUALIFER
PLAYERS CRICKET,INDIA
TRAINING----DISPLAY
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N.SURESH M.Com.,M.L.I.Sc.,(NET).,M.Phil.
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