def __init__(self, atomspace):
self.forest = adaptors.ForestExtractor(atomspace, None)
# settings
self.min_embeddings = 2
self.max_embeddings = 2000000000
self.min_frequency = 0.5
self.atomspace = atomspace
self.max_per_layer = 5
self.viz = PLNviz(atomspace)
self.viz.connect()
self.viz.outputTreeNode(target=[], parent=None, index=0)
self._var = -1
self.rules_output = []
