ROC theory under the exponential assumption to analyze visual detection experimental data
Por:
Sanchez-Marin F.J.
Publicada:
1 ene 2001
Resumen:
Psychophysical data of 30 human observers that were not properly explained by ROC theory under the Gaussian assumption were analyzed assuming underlying exponential distributions. The detection experiments were done using the rating procedure. Under the power-law assumption a detectability index, similar to d', was deduced. An interesting result was that p(a), the area under the ROC, which is a free-distribution parameter, is very similar to the area under the power-law ROC for all our observers.
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