Why evaluate indexing
system
According to Lancaster
–How well the system is satisfying
its objectives i.e. demands place on
–How efficiently it is satisfying
its objectives
–Whether the system justifies its
existence
Basic parameters to measure
a IRS
Effectiveness: how far it
can retrieve the relevant information
•Efficiency: At what minimum
cost does the system achieving its objectives
Evaluation Criteria
Quality of indexing system
•Cost
•Response Time
•Cost Effectiveness
•User Effort: accessibility
of system, availability of guidance of system personnel, volume of retrieval
items
•Form of Presentation