Assessing quality of web based systems

This paper proposes an assessment model for Web-based systems in terms of non-functional properties of the system. The proposed model consists of two stages: (i) deriving quality metrics using goal-question-metric (GQM) approach; and (ii) evaluating the metrics to rank a Web based system using multi-element component comparison analysis technique. The model ultimately produces a numeric rating indicating the relative quality of a particular Web system in terms of selected quality attributes. We decompose the quality objectives of the web system into sub goals, and develop questions in order to derive metrics. The metrics are then assessed against the defined requirements using an assessment scheme.