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Detection of type-2 diabetes using characteristics of toe photoplethysmogram by applying support vector machine

Nirala Neelamshobha, Periyasamy R., Singh Bikesh Kumar, Kumar Awanish

Biocybernetics and Biomedical Engineering

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2019

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Vol. 39, no. 1

38--51

EN

Diabetes mellitus (DM) is one of the most widespread and rapidly growing diseases. With its advancement, DM-related complications are also increasing. We used characteristic features of toe photoplethysmogram for the detection of type-2 DM using support vector machine (SVM). We collected toe PPG signal, from 58 healthy and 83 type-2 DM subjects. From each PPG signal 37 different features were extracted for further classification. To improve the performance of SVM and reduce the noisy data we employed hybrid feature selection technique that reduces the feature set of 37 to 10 on the basis of majority voting. Using 10 selected features set, we gained an accuracy of 97.87%, sensitivity of 98.78% and specificity of 96.61%. Further for the validation of our method we need to do random population test, so that it can be used as a non-invasive screening tool. Photoplethysmogram is an economic, technically easy and completely non-invasive method for both physician and subject. With the high accuracy that we obtained, we hope that our work will help the clinician in screening of diabetes and adopting suitable treatment plan for preventing end organ damage.

2

A class of exponentially fitted second derivative extended backward differentiation formula for solving stiff problems

Ehigie J O, Okunuga S A, Sofoluwe A B

Fasciculi Mathematici

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2013

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Nr 51

71--84

EN

An exponentially fitted second derivative extended backward differentiation formula (SDEBDF) is derived from the class of composite, multiderivative linear multistep method with a free parameter to allow for the exponential fitting. Some numerical properties such as stability of the methods are investigated as a pair of predictor-corrector (P-C) technique based on a proposed algorithm, to which the local error estimates are also obtained. The efficiency of the new method tested on some standard prob- lems shows that the method compares favourably with existing methods and with high accuracy.

3

Three boundary value problems for second order differential inclusions in Banach spaces

Azzam D., Castaing C., Thibault L.

Control and Cybernetics

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2002

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Vol. 31, no 3

659-693

EN

The paper studies, in the context of Banach spaces, the problem of three boundary conditions for both second order differential inclusions and second order ordinary differential equations. The results are obtained in several new settings of Sobolev-type spaces involving Bochner and Pettis integrals. Some classes of second order multivalued evolution equations associated with m-accretive operators are also considered. Applications to some control problems are provided with the help of narrow convergence for Young measures.

4

Próba subpikselowej lokalizacji linii konturowych z wykorzystaniem drugiej pochodnej obrazu cyfrowego

Jachimski J., Mikrut S.

Archiwum Fotogrametrii, Kartografii i Teledetekcji

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1998

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Vol. 8

25-1--25-8