Accession Number:

ADA280618

Title:

Subgrouped Real Time Recurrent Learning Neural Networks

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s):

• Dean, Jeffrey S.

Report Date:

1994-05-01

Pagination or Media Count:

157.0

Abstract:

A subgrouped Real Time Recurrent Learning RTRL network was evaluated. The one layer net successfully learns the XOR problem, and can be trained to perform time dependent functions. The net was tested as a predictor on the behavior of a signal, based on past behavior. While the net was not able to predict the signals future behavior, it tracked the signal closely. The net was also tested as a classifier for time varying phenomena for the differentiation of five classes of vehicle images based on features extracted from the visual information. The net achieved a 99.2 accuracy in recognizing the five vehicle classes. The behavior of the subgrouped RTRL net was compared to the RTRL network described in Capt R. Lindseys AFIT Masters thesis. The subgrouped RTRL performance proved close to the RTRL network in accuracy while reducing the time required to train the network for multiple output classification problems. Neural network, Recurrent, RTRL, Image recognition time dependence, Temporal, Sequence recognition.

Descriptors:

• *NEURAL NETS
• *NETWORKS
• *LEARNING
• OUTPUT
• REAL TIME
• ACCURACY
• SEQUENCES
• SIGNALS
• CLASSIFICATION
• BEHAVIOR
• VEHICLES
• RECOGNITION
• IMAGES
• TIME
• THESES
• LAYERS
• TIME DEPENDENCE
• FUNCTIONS

Subject Categories:

• Psychology
• Human Factors Engineering and Man Machine Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE