Determining the Factors Influential in the Validation of Computer-based Problem Solving Systems

Individual tree diameter increment model for managed even-aged stands of ponderosa pine throughout the western United States using a multilevel linear mixed effects model

“…There are many types of validation methods available; some are qualitative and others are quantitative (Holmes, 1983;Sargent, 1999). The use of statistical tests in model validation has drawn much debate since the work of Wright (1972), because of the varying criteria for the ''value'' of models and the methods of determining it (Mayer et al, 1994;Morehead, 1996). Because each model is unique, no single validation technique or method is widely applied.…”