具人類個性之人工智慧計算;Artificial Intelligence Computation with Personality

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題名:	具人類個性之人工智慧計算;Artificial Intelligence Computation with Personality
作者:	陳儷予;Chen, Li-Yu
貢獻者:	光電科學與工程學系
關鍵詞:	人工智慧;腦波;聽覺;水庫計算法;Artificial Intelligence;Brainwave;Reservoir Computing;EEG
日期:	2021-07-28
上傳時間:	2021-12-07 11:48:06 (UTC+8)
出版者:	國立中央大學
摘要:	本研究建構了一個腦信號輔助的人工智慧計算系統。我們將腦波的信號加入人工智慧類神經網路的?數中，進?訓練與計算。我們比較加入腦波資料前後的信號辨識能力。人工智慧系統的輸入信號為三角波與方波信號，我們加入雜訊以增加辨識困難度，相對應於三角波與方波信號的輸出信號為0與1。我們讓受試者聆聽此三角波與方波信號，同時以腦波儀擷取受試者的腦波。我們使用 Reservoir computing（RC）[1]的計算技術，將腦波訊號以短時間傅立葉轉換處理後，將不同頻率（腦波的信號範圍為 0 到 70 Hz的頻率）的腦波信號合併輸入信號，一起輸入人工智慧系統進?計算。在RC計算技術中，需以亂數定義輸入權重矩陣（ ??? ）與遞迴權重矩陣（ ? ）。由本實驗可得3個結果： 1. 固定腦波資料，我們隨機產生 ??? 與 ? 矩陣數次進?計算，發現對計算結果的影響程度小。 2. 在某一位受試者上，於不同時間點所量測的 10 次結果，可以發現，在 8、12、52、54 與 68 Hz 所計算出來的 10 次均方誤差 MSE 的變異性較大，具有因時而異的特性。 3. 以14-42 Hz 與 58-62 Hz 的腦波信號加入 RC 計算程式中，結果發現，11位受試者的結果，均能有效降低輸入信號的辨識錯誤率。此結果可結論出，以腦波加入人工智慧計算系統，比沒有加入腦波的人工智慧計 ii 算系統，更能精確辨識輸入信號。也就是以腦波輸入人工智慧系統，更能精確地提供適合每個人需要的結果。本研究以腦波加入人工智慧的計算當中，結果（使用14-42 Hz 與 58- 62 Hz腦波信號）可有效降低信號的辨識錯誤率。此降低的程度，與每個人在受測當時的狀況有關。此成果（使用8、12、52、54 與 68 Hz腦波信號）也展示了因時因人因環境不同所產生的反應（個性與喜好、或當下的情緒、或生理心理的狀況）。未來可延伸應用至判斷個人的喜好，或將逝者的人腦的反應信號加入計算當中，可讓人類的個性與意見長久保留。本研究計畫經由國立臺灣大學?為與社會科學研究倫理委員會審核通過，倫委會案號: 202103EM011（見附錄一）。;Artificial intelligence computation system assisted by brainwave signal has been built in this study. We add the electroencephalography as input data to the neural networks to optimize the computing system. We examine the signal recognition ability before and after adding brainwave data. The input signals consist of the triangular and rectangular waves. The waves are incorporated with white Gaussian noise to increase the difficulty of signal recognition. The corresponding output signals to the input triangular and rectangular waves are 0 and 1, respectively. The subjects listen to the triangular and rectangular waves. The brainwave data of the subjects are collected by using MindWave mobile. Using the short-time Fourier transform (STFT) with a nonoverlapped Hamming window, the brainwaves are transformed to encephalogram(EEG) spectra. Using Reservoir Computing (RC), the EEG signals of different frequencies were added into the RC program as input data. In RC. ??? and ? are the input and recurrent weight matrices, respectively, which consist of random numbers. We obtain three main results: 1. The value in the arbitrarily generated ??? and ? matrices have small influence on the calculation results. 2. In the measured results for 10 different times on the same subject, it can be found that brainwave calculations at 8, 12, 52, 54 and 68 Hz, the MSE results have significant difference. They have characteristics that vary for different time. 3. With the EEG signal from 14 to 42 Hz and from 58 to 62 Hz frequency, the signal recognition error rate can be reduced effectively. iv Brainwave signals were added into artificial intelligence computation system in this study. The signal recognition error rate can be reduced effectively (using the EEG signals at 14-42 Hz or 58-62 Hz). This result (using the EEG signals at 8, 12, 52, 54 and 68 Hz) also demonstrates the artificial intelligence computation involved in different human responses (like personality and preferences, emotions or physical and psychological conditions). In the future, it can be extended to determine personal preferences. If one day the brain of the deceased persons could be kept active, the response signal of the brain can also added into the computation. It might make the personality or the spirit immortal. This research project was approved by Research Ethics Committee National Taiwan University. NTU-REC No.：202103EM011. (See Appendix 1)
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