2 research outputs found
A MODEL FOR PEFORMANCE EVALUATION OF INTERACTIVE SYSTEMS
We describe a quantitative model for the performance evaluation of interactive computer
systems. The approach involves the development of an "interaction graph" or state
transition diagram to describe the user-machine interaction. Given numerical data on
transition times and probabilities, the model can be used to perform sensitivity analyses of
changes in system parameters and user behavior. To illustrate the model, we use empirical
data from field and laboratory experiments designed to compare a prototype natural
language query system with a formal (relational) query system. The general approach is
applicable in a broad range of other contexts including bibliographic retrieval and the
analysis of web-log data. It should be of interest to both system developers and potential
users of these systems.Information Systems Working Papers Serie
A MODEL FOR PEFORMANCE EVALUATION OF INTERACTIVE SYSTEMS
We describe a quantitative model for the performance evaluation of interactive computer
systems. The approach involves the development of an "interaction graph" or state
transition diagram to describe the user-machine interaction. Given numerical data on
transition times and probabilities, the model can be used to perform sensitivity analyses of
changes in system parameters and user behavior. To illustrate the model, we use empirical
data from field and laboratory experiments designed to compare a prototype natural
language query system with a formal (relational) query system. The general approach is
applicable in a broad range of other contexts including bibliographic retrieval and the
analysis of web-log data. It should be of interest to both system developers and potential
users of these systems.Information Systems Working Papers Serie