def test_not_remove_modifiers_overlap_target(self):
"""Test that a modifier which overlaps with a target is not pruned but does not modify itself."""
doc = nlp("The patient has heart failure.")
doc.ents = (Span(doc, 3, 5, "CONDITION"), )
context_item = ConTextRule("failure", "MODIFIER")
tag_object = ConTextModifier(context_item, 4, 5, doc)
graph = ConTextGraph(remove_overlapping_modifiers=False)
graph.modifiers = [tag_object]
graph.targets = doc.ents
graph.apply_modifiers()
assert overlap_target_modifiers(tag_object.span, doc.ents[0])
assert len(graph.modifiers) == 1
def test_remove_modifiers_overlap_target(self):
"""Test that a modifier which overlaps with a target is removed when set to True."""
doc = nlp("The patient has heart failure.")
doc.ents = (Span(doc, 3, 5, "CONDITION"), )
context_item = ConTextItem("failure", "MODIFIER")
tag_object = TagObject(context_item, 4, 5, doc)
graph = ConTextGraph(remove_overlapping_modifiers=True)
graph.modifiers = [tag_object]
graph.targets = doc.ents
graph.prune_modifiers()
graph.apply_modifiers()
assert overlap_target_modifiers(tag_object.span, doc.ents[0])
assert len(graph.modifiers) == 0
def context_graph(self):
doc = nlp.tokenizer("There is no evidence of pneumonia but there is chf.")
doc[0].is_sent_start = True
for token in doc[1:]:
token.is_sent_start = False
item_data1 = ConTextRule(
"no evidence of", "DEFINITE_NEGATED_EXISTENCE", "forward"
)
tag_object1 = ConTextModifier(item_data1, 2, 5, doc)
item_data2 = ConTextRule("evidence of", "DEFINITE_EXISTENCE", "forward")
tag_object2 = ConTextModifier(item_data2, 3, 5, doc)
item_data3 = ConTextRule("but", "TERMINATE", "TERMINATE")
tag_object3 = ConTextModifier(item_data3, 6, 7, doc)
graph = ConTextGraph()
graph.modifiers = [tag_object1, tag_object2, tag_object3]
return doc, graph