What are the different levels of evaluation of an ISAR system? Discuss the major steps involved in the evaluation of the performance of an IR system

### Levels of Evaluation of an Information Storage and Retrieval (ISAR) System

Information Storage and Retrieval (ISAR) systems are crucial in managing and retrieving data efficiently. The evaluation of these systems involves multiple levels to ensure their effectiveness. The primary levels of evaluation include:

1. Operational Level:
   This level assesses the day-to-day functionality of the ISAR system. It includes evaluating system reliability, response time, and user interface efficiency. Key factors such as system downtime, error rates, and the ease of performing routine tasks are examined. Metrics such as system uptime percentage and average response time are critical here. This level ensures that the system meets basic operational requirements and can handle the expected load without significant issues.

2. Performance Level:
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