An NL Hierarchy.

Jianer Chen Jim Cox Bud Mishra

Published in: Inf. Process. Lett. (1991)

Keyphrases

natural language
hierarchical structure
lower level
question answering
neural network

natural language understanding
higher level
natural language processing
information retrieval

multiscale
computer vision
machine learning
data sets

class hierarchy
natural language questions
written in natural language
man machine communication