Sparsification of the PLS Regression Algorithm using L2-Norm of Weighted Coefficients: Application in Emotion Recognition

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Einizade Aref; Hajipour Sardouie Sepide

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Journal: IRANIAN JOURNAL OF BIOMEDICAL ENGINEERING Year:2020 | Volume:14 | Issue:3 Page(s): 221-233

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Title

Sparsification of the PLS Regression Algorithm using L2-Norm of Weighted Coefficients: Application in Emotion Recognition

Author(s)

Einizade Aref | Hajipour Sardouie Sepide | Issue Writer Certificate

Keywords

EEG Signal

Emotion Recognition

Linear Regression

PLS Regression

Sparse Coefficients

Valence

Arousal

Abstract

The brain electrical signal has been widely used in clinical and academic research, due to its ease of recording, non-invasiveness, and precision. One of the applications can be Emotion Recognition from the brain's electrical signal. Generally, two types of parameters (Valence and Arousal) are used to determine the type of emotion which in turn indicate "positive or negative" and "level of extroversion or excitement" for a specific emotion. The significance of emotion is determined by the effects of this phenomenon on daily tasks, especially in cases where the person is confronted with activities that require careful attention and concentration. In the Emotion Recognition problem, firstly, using proper emotion stimuli, different emotions are created for the subjects under study and the brain signals corresponding to each stimulus are recorded. The two main steps for solving the Emotion Recognition problem are extracting suitable features and using appropriate classification or regression methods. In previous studies, different visual and auditory have been used and various linear and nonlinear features and classifiers have been investigated. In this paper, the main goal was the improvement of Linear Regression algorithms to estimate the criteria for recognizing human emotions more efficiently. For this purpose we proposed a new algorithm that uses the sparseness of the mixing vector along with the Linear Regression cost function. The effectiveness of the proposed algorithm on simulated data has been investigated and its superiority to Linear Regression algorithms such as PLS, LASSO, SOPLS and Ridge was shown. Also, to apply the proposed algorithm on EEG data corresponding to Emotion Recognition, the DEAP dataset was used and the AR coefficients were extracted from the EEG Signals. The results obtained from the proposed algorithm were compared with those of the other Linear Regression algorithms, which in total showed the relative superiority of the proposed method.

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APA: Copy

Einizade, Aref, & Hajipour Sardouie, Sepide. (2020). Sparsification of the PLS Regression Algorithm using L2-Norm of Weighted Coefficients: Application in Emotion Recognition. IRANIAN JOURNAL OF BIOMEDICAL ENGINEERING, 14(3 ), 221-233. SID. https://sid.ir/paper/985044/en

Vancouver: Copy

Einizade Aref, Hajipour Sardouie Sepide. Sparsification of the PLS Regression Algorithm using L2-Norm of Weighted Coefficients: Application in Emotion Recognition. IRANIAN JOURNAL OF BIOMEDICAL ENGINEERING[Internet]. 2020;14(3 ):221-233. Available from: https://sid.ir/paper/985044/en

IEEE: Copy

Aref Einizade, and Sepide Hajipour Sardouie, “Sparsification of the PLS Regression Algorithm using L2-Norm of Weighted Coefficients: Application in Emotion Recognition,” IRANIAN JOURNAL OF BIOMEDICAL ENGINEERING, vol. 14, no. 3 , pp. 221–233, 2020, [Online]. Available: https://sid.ir/paper/985044/en

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