In the tutorial materials, we provide the following sample init.yaml file. This section explains each initialization parameter. For further details, consult initExp(app_id,args) on the NEXT GitHub wiki.
This refers to the built-in algorithm apps provided by NEXT. For a triplet experiment, the app_id is PoolBasedTripletMDS. Other algorithms, such as DuelingBandits, refer to different types of experiments.