Title
Weighted DAG Automata for Semantic Graphs.
Abstract
Graphs have a variety of uses in natural language processing, particularly as representations of linguistic meaning. A deficit in this area of research is a formal framework for creating, combining, and using models involving graphs that parallels the frameworks of finite automata for strings and finite tree automata for trees. A possible starting point for such a framework is the formalism of directed acyclic graph DAG automata, defined by Kamimura and Slutzki and extended by Quernheim and Knight. In this article, we study the latter in depth, demonstrating several new results, including a practical recognition algorithm that can be used for inference and learning with models defined on DAG automata. We also propose an extension to graphs with unbounded node degree and show that our results carry over to the extended formalism.
Year
DOI
Venue
2018
10.1162/COLI_a_00309
Computational Linguistics
Field
DocType
Volume
Graph,Parallels,Inference,Computer science,Computational linguistics,Automaton,Finite-state machine,Theoretical computer science,Natural language processing,Artificial intelligence,Recognition algorithm,Formalism (philosophy)
Journal
44
Issue
ISSN
Citations 
1
0891-2017
1
PageRank 
References 
Authors
0.36
49
5
Name
Order
Citations
PageRank
David Chiang12843144.76
Frank Drewes2266.10
Daniel Gildea32269193.43
Adam Lopez453834.69
Giorgio Satta590290.85