Model selection

ref: ca164

ref: ca164

ref: ca165

ref: ca165

ref: ca166

ref: ca166

ref: ca167

ref: ca167

ref: ca168

ref: ca168

ref: ca169

ref: ca169

ref: ca170

ref: ca170

ref: ca171

ref: ca171

ref: ca172

ref: ca173

ref: ca173

ref: ca174

ref: ca174

ref: ca175

ref: ca175

ref: ca176

ref: ca176

ref: ca177

ref: ca177

ref: ca178

ref: ca178

ref: ca179