Artificial Intelligence Techniques

cracklegulleyAI and Robotics

Oct 19, 2013 (3 years and 7 months ago)

66 views

Artificial Intelligence Techniques

Applications of Neural Networks

Example Applications


Analysis of data


Classifying in EEG


Pattern recognition in ECG


EMG disease detection.

Gueli N et al (2005) The influence of lifestyle on cardiovascular

risk factors analysis using a neural network
Archives of Gerontology
and Geriatrics

40 157

172



To produce a model of risk facts in
heart disease.


MLP used


The accuracy was relatively good for
chlorestremia and triglyceremdia:


Training phase around 99%


Testing phase around 93%


Not so good for HDL

Subasi A (in press) Automatic recognition of alertness level from
EEG by using neural network and wavelet coefficients E
xpert
Systems with Applications

xx (2004) 1

11



Electroencephalography (EEG)


Recordings of electrical activity from the
brain.


Classifying operation


Awake


Drowsy


Sleep


MLP


15
-
23
-
3


Hidden layer


log
-
tanh function


Output layer


log
-
sigmoid function


Input is normalise to be within the
range 0 to 1.



Accuracy


95%+/
-
3% alert


93%+/
-
4% drowsy


92+/
-
5% sleep


Feature were extracted and form the
input to the network, from wavelets.

Karsten Sternickel (2002) Automatic pattern recognition in ECG
time series
Computer Methods and Programs in Biomedicine

68
109

115


ECG


electrocardiographs


electrical
signals from the heart.


Wavelets again.


Classification of patterns


Patterns were spotted



Abel et al (1996) Neural network analysis of the EMG
interference pattern
Med. Eng. Phys.

Vol. 18, No. 1. pp.
12
-
l 7


EMG


Electromyography


muscle
activity.


Interference patterns are signals
produce from various parts of a muscle
-

hard to see features.


Applied neural network to EMG
interference patterns.



Classifying


Nerve disease


Muscle disease


Controls


Applied various different ways of
presenting the pattern to the ANN.


Good for less serve cases, serve cases
can often be see by the clinician.

Example Applications


Wave prediction


Controlling a vehicle


Image processing


Condition monitoring


Wave prediction


Raoa S, Mandal S(2005)
Hindcasting of
storm waves using neural networks

Ocean Engineering
32 (2005) 667

684



MLP used to predict storm waves.


2:2:2 network


Good correlation between ANN model and
another model



van de Ven P, Flanagan C, Toal D (in press)
Neural network control of underwater vehicles

Engineering Applications of Artificial Intelligence


Semiautomous vehicle


Control using ANN


ANN replaces a mathematical model of
the system.


Kuo RJ, et al (in press)
Part family
formation through fuzzy ART2 neural
network

Decision Support Systems


Image recognition of part


Deals with the shifting of the part


Silva et al (2000) THE ADAPTABILITY OF A TOOL WEAR
MONITORING SYSTEM UNDER CHANGING CUTTING
CONDITIONS M
echanical Systems and Signal Processing
(2000) 14(2), 287
-
298


Modelling tool wear


Combines ANN with other AI (Expert
systems)


Self organising Maps (SOM) and ART2
investigated


SOM better for extracting the required
information.