def _make_tuples(self, key):
X = Stacks().load(key)
voxel = (VoxelSize() & key).fetch1['vx', 'vy', 'vz']
b = RankDegenerateBernoulliProcess(voxel,
quadratic_channels=key['quadratic_components'],
linear_channels=key['linear_components'],
common_channels=key['common_components']
)
cells = (CellLocations() & key).fetch1['cells']
b.fit(X, cells, maxiter=100)
key.update(b.parameters)
key['train_cross_entropy'] = b.cross_entropy(X, cells)
key['train_auc_weighted'] = b.auc(X, cells, average='weighted')
key['train_auc'] = b.auc(X, cells, average='macro')
self.insert1(key)