Title
Environment-Driven Lexicon Induction For High-Level Instructions
Abstract
We focus on the task of interpreting complex natural language instructions to a robot, in which we must ground high-level commands such as microwave the cup to low-level actions such as grasping. Previous approaches that learn a lexicon during training have inadequate coverage at test time, and pure search strategies cannot handle the exponential search space. We propose a new hybrid approach that leverages the environment to induce new lexical entries at test time, even for new verbs. Our semantic parsing model jointly reasons about the text, logical forms, and environment over multi-stage instruction sequences. We introduce a new dataset and show that our approach is able to successfully ground new verbs such as distribute, mix, arrange to complex logical forms, each containing up to four predicates.
Year
Venue
Field
2015
PROCEEDINGS OF THE 53RD ANNUAL MEETING OF THE ASSOCIATION FOR COMPUTATIONAL LINGUISTICS AND THE 7TH INTERNATIONAL JOINT CONFERENCE ON NATURAL LANGUAGE PROCESSING, VOL 1
Exponential search,Computer science,Lexicon,Natural language,Artificial intelligence,Natural language processing,Parsing,Predicate (grammar),Robot
DocType
Volume
Citations 
Conference
P15-1
15
PageRank 
References 
Authors
0.69
28
4
Name
Order
Citations
PageRank
Dipendra K. Misra11389.88
Kejia Tao2150.69
Percy Liang33416172.27
Ashutosh Saxena44575227.88