Research Article
a
May
2018
© www.ijarcsse.com , All Rights Reserved Page | 21
International Journals of Advanced Research in
Computer Science and Software Engineering
ISSN: 2277-128X (Volume-8, Issue-5)
An Improvement on Deep Time Growing Neural Network
on Biological Signals: Review
Manpreet Kaur
Research Scholar, Guru Kashi University,
Talwandi Sabo, Punjab, India
Er. Jashanpreet Kaur
Assistant Professor, Guru Kashi University,
Talwandi Sabo, Punjab, India
Abstract: A novel method for learning the cyclic contents of stochastic time series: the deep time-growing neural
network (DTGNN). The DTGNN combines supervised and unsupervised methods in different levels of learning for an
enhanced performance. It was employed by a multiscale learning structure to classify cyclic time series (CTS), in
which the dynamic contents of the time series are preserved in an efficient manner. This paper suggests a systematic
procedure for finding the design parameter of the classification method for a one versus-multiple class application. In
this paper different authors research papers are reviewed and different problems are stored and now these problems
are resolved.
Keywords: DNN, HMM, CTS, MLP, TDNN etc.
I. INTRODUCTION
Time series classification has been a topic of study over decades. Several supervised and unsupervised methods
have been suggested with which to learn the dynamic contents of time series. Dynamic time warping, hidden Markov
model (HMM), and artificial neural network are three well known methods extensively employed in many contexts, e.g.,
automatic speech recognition [1]–[3]. Nevertheless, the development of a classification method sophisticated for the
cyclic time series (CTS) had been overlooked in the model level, even though a number of methods were subjectively
applied to the CTS [4]–[6]. A CTS is described as a no stationary time series exhibiting repetitive characteristics. Unlike
periodic time series, the cyclic duration of a CTS can be inconsistent, but repetitive patterns are observed. This cyclic
behavior attributes special features to the time series that can be exploited by a classifier to enhance its classification
performance. The importance of developing a sophisticated method for the CTS classification is realized when
considering that a recording of many natural phenomena and biological activities resembles a CTS. As an example,
phonocardiogram (PCG) is a recording of the sounds emanating from the mechanical activity of a heart. This is
considered as a typical CTS where the cycle duration is affected by a number of physiological activities, e.g., respiration.
Several studies reported the importance of having a reliable decision support system for screening pediatric cardiac
disease in primary healthcare centers, as the screening accuracy is still considerably low [7], [8]. The main challenge for
developing a decision support system for screening cardiac disease is a reliable method for processing and classifying the
PCG signal. Such a need is seen in different medical applications, in which the biological signal is cyclic, and the
classification of the signal can be important, and sometimes critical to patient monitoring, as is the case, for instance,
with the classification of the patterns associated with electroencephalograms (EEGs). Biological signals with cyclic
characteristics often show no stationary behavior not
only within the cycles, but over them in the cycle-to-cycle variation. This associates a high level of complexity
with the signal that makes the development of the classifier, a big challenge. Unlike many industrial applications, the
origin of the complexities in the majority of the biological signals has yet to be fully understood. As a result, the
stochastic models can provide a better learning than deterministic ones, especially when it comes with a general model
for diverse medical applications. Such a model needs to be capable of coping with the complexities of the signals.
A multiscale structure for classifying CTS based on a novel deep machine learning method. This paper
introduces the idea of exploiting the cyclic contents of the time series in a certain fashion named the time-growing
sectors. This idea serves as the means for building a novel architecture of the time-growing neural network (TGNN),
which we call it the deep TGNN (DTGNN), in which an efficient classification is performed through multiple mapping.
The proposed structure preserves the dynamic contents of CTS by the concise feature vector that provides optimal
discrimination power. It is theoretically and experimentally proved that the DTGNN offers superior learning compared
with two other alternatives, the time delayed neural network (TDNN) and the multilayer perceptron (MLP). In this paper,
the support vector machine (SVM) performs the ultimate binary classification using the outcomes of the DTGNN as the