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題 名 | Using Fractal Dimension Analysis on Objective Ausculation of Traditional Chinese Medical Diagnosis=利用碎形維度分析方法於中醫聞診現代化研究 |
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作 者 | 邱創乾; 楊明達; 林宸生; | 書刊名 | Journal of Medical and Biological Engineering |
卷 期 | 22:4 2002.12[民91.12] |
頁 次 | 頁219-225 |
分類號 | 413.242 |
關鍵詞 | 聞診; 中醫; 碎形維度; 動態時間扭曲; Ausculatiion; Traditional chinese medicine; Fractal dimension; Dynamic time warping; |
語 文 | 英文(English) |
中文摘要 | 中醫聞診以患者聲音的變化為診斷的依據,是臨床辨證重要的一環。本研究採用連續發音的方式探討十六名氣虛患者,九名陰虛患者及十二名正常人在連續語音表現上的差異性。我們選用碎形維度演算法來計算這類非規律性語音信號所表現出的特性,所採用的測試語句共有兩組,一為特定語音設計句,另一為隨意選取句。研究方法是讓測試者連續發同一句語音三次,觀察其碎形維度在這三筆之間複雜程度的差異性,以動態時間扭曲路徑演算法,來量化同一語句中三筆語音之間的型態差異。結果顯示:(1)雖然每一位測試者唸出相同的句子,但是彼此間的碎形維度值分佈變化並不一定相似;(2)由兩組不同的測試句子可觀察得到若比較同一人前後三筆碎形維度值,語音變化與音節種類並無太大關係,而是隨著病人不同而改變;(3)氣虛與陰虛患者在重複三次測試句的差異變化程度比正常人要大許多;(4)兩組測試句同時用於分類正常人與虛症患者上,可得到很好的分類結果(85%以上);(5)利用碎形維度參數於連續語音的分類結果其準確率比起過去研究所使用的五個語音參數於元音/a/之分類結果要來得好。因此連續音之碎形維度分析可提供另一種優異的工具於中醫聞診現代化之研究上。 |
英文摘要 | Speech variation is important for clinical examinations in auscultation of traditional Chinese medicine. This study applied continuous speech to compare the difference among sixteen qi-vacuity patients, nine ying-vacuity patients and twelve normal subjects. In order to compute the speech characteristics related to production irregularities, the fractal dimension (FD) parameter was used. Two sets of test sentences were spoken in Mandarin: one is specific design and the other is random choice. Each test sentence was pronounced three times as the test patterns, and then we compared the difference of complexity among them using the dynamic time warping (DTW) technique. The results revealed: (1) although the same sentence was read by each subject three times, the distributions of FD values each time were not exactly the same to each other; (2) no significant correlation was found between speech variations and syllables; (3) the utterances of test sentences of both qi-vacuity and ying-vacuity patients have much more variations than that of normal subjects; (4) good classification results (over 85%) were obtained using both sets of test sentences for the classification between deficient and normal subjects; (5) the classification accuracy using FD values of continuous speech was better than the results using five acoustic parameters of the vowel/a/ in our previous study. In conclusion, the fractal dimension analysis of continuous speech provides an alternative and outstanding approach to the objective auscultation of Chinese medical diagnosis. |
本系統中英文摘要資訊取自各篇刊載內容。