Title
Randomized Decoding for Selection-and-Ordering Problems
Abstract
The task of selecting and ordering infor- mation appears in multiple contexts in text generation and summarization. For in- stance, methods for title generation con- struct a headline by selecting and order- ing words from the input text. In this pa- per, we investigate decoding methods that simultaneously optimize selection and or- dering preferences. We formalize decod- ing as a task of nding an acyclic path in a directed weighted graph. Since the problem is NP-hard, nding an exact so- lution is challenging. We describe a novel decoding method based on a randomized color-coding algorithm. We prove bounds on the number of color-coding iterations necessary to guarantee any desired likeli- hood of nding the correct solution. Our experiments show that the randomized de- coder is an appealing alternative to a range of decoding algorithms for selection-and- ordering problems, including beam search and Integer Linear Programming.
Year
Venue
Field
2007
HLT-NAACL
Automatic summarization,Graph,Headline,Text generation,Computer science,Beam search,Theoretical computer science,Integer programming,Artificial intelligence,Decoding methods,Machine learning
DocType
Citations 
PageRank 
Conference
8
0.62
References 
Authors
11
3
Name
Order
Citations
PageRank
Pawan Deshpande1634.19
Regina Barzilay23869254.27
David R. Karger3193672233.64