amr-utils

A collection of convenience functions for handling AMR (Abstract Meaning Representation) graphs.

• A converter from an AMR graph to a list of nodes and edges

Input: an AMR graph

graph_string = '''
(s / schedule-01
    :ARG1 (p / project
        :mod (m / monetary-quantity
                :unit (d / dollar)
                :quant 4600000000))
    :ARG2 (c / complete-01
        :ARG1 p)
    :ARG3 (d2 / date-entity
        :year 2003))
'''

Output: a list of nodes and edges

Nodes (see AmrNode):

0 s schedule-01
0.0 p project
0.0.0 m monetary-quantity
0.0.0.0 d dollar
0.1 c complete-01
0.2 d2 date-entity

Edges (see AmrEdge):

s (ARG1)-> p
p (mod)-> m
m (unit)-> d
s (ARG2)-> c
c (ARG1)-> p
s (ARG3)-> d2

Usage:

g = AmrGraph()
tokens = graph_string.split()

nodes = g.getNodes(tokens)
edges = g.getEdges(tokens)

for node in nodes: print node
for edge in edges: print edge

TODO:

1. Add constants to AMR nodes