Seite - 155 - in Intelligent Environments 2019 - Workshop Proceedings of the 15th International Conference on Intelligent Environments

Figure 2. Russell's circular model [15] Based on the circular model of Russell, in this study we created a new Depression label from two labels, Valence and Arousal, which are given in DEAP. Figure 3 and formula 1 explain the definition of Depression in this study. Figure 3. Definition of depression (1) Here, D is Depression, V is Valence, A is Arousal. In addition, in order to efficiently advance the analysis in the future, the value of D was normalized to the range of -1 to 1. Arousal(A) and Valence(V) are range of -2 to 2, respectively. For example, when A is - 1 and V is -1, D is 0. 2.2. Feature generation for electrodes 2.2.1 Importance of emotion recognition DEAP has multiple types of files for processing. In this research, we used a data set for MATLAB, which has abundant library of signal processing. Table 1 shows the format of DEAP. Y.Tsurugasaki etal. / IdentificationofEffectiveEEGElectrodes forDepressionSensing 155