Psychiatry Investig.  2018 Jul;15(7):695-700. 10.30773/pi.2017.12.15.

Detecting Manic State of Bipolar Disorder Based on Support Vector Machine and Gaussian Mixture Model Using Spontaneous Speech

• Pan Z
• Gui C
• Zhang J
• Zhu J
• Cui D

• KMID: 2428833
• DOI: http://doi.org/10.30773/pi.2017.12.15

Abstract

OBJECTIVE
This study was aimed to compare the accuracy of Support Vector Machine (SVM) and Gaussian Mixture Model (GMM) in the detection of manic state of bipolar disorders (BD) of single patients and multiple patients.
METHODS
21 hospitalized BD patients (14 females, average age 34.5±15.3) were recruited after admission. Spontaneous speech was collected through a preloaded smartphone. Firstly, speech features [pitch, formants, mel-frequency cepstrum coefficients (MFCC), linear prediction cepstral coefficient (LPCC), gamma-tone frequency cepstral coefficients (GFCC) etc.] were preprocessed and extracted. Then, speech features were selected using the features of between-class variance and within-class variance. The manic state of patients was then detected by SVM and GMM methods.
RESULTS
LPCC demonstrated the best discrimination efficiency. The accuracy of manic state detection for single patients was much better using SVM method than GMM method. The detection accuracy for multiple patients was higher using GMM method than SVM method.
CONCLUSION
SVM provided an appropriate tool for detecting manic state for single patients, whereas GMM worked better for multiple patients' manic state detection. Both of them could help doctors and patients for better diagnosis and mood state monitoring in different situations.

Keyword

Bipolar disorder; Spontaneous speech; Support vector machine; Gaussian mixture model

MeSH Terms

Bipolar Disorder*
Diagnosis
Discrimination (Psychology)
Female
Humans
Methods
Smartphone
Support Vector Machine*