Really needs help regarding BMS in SPM8. After comparing 6 subject/ 4 models
each, and got all the BMS.DCM.rfx value (F, SF, alpha, exp_r and xp). How
should I conclude the result? In Stephan (2009) paper, I should calculate
log model evidence differences, this is the F value right? For example, the
values for subject 1, model 1 is -505.75 and model 2 is -510.76. There for
log model evidence differences (only the magnitude?) = 510.76 - 505.76 = 5.
Favour model 2. Is this the correct way? Is this method can only consider 2
models (Best and 2nd Best Models)?
Other than that I also need to consider the exceedance probability value.
Thank you in advanced.