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박창호,안종영,김주성,김수훈,이영재,허강인 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.2
A conventional CHMM is unable to express time transient variation well. In this paper, we formed segments to combine several frames and made up a vector for each segment to reflect a dynamic variation speech. If we used as they were, the number of parameter's dimensions increased. Therefore we could not estimate aptly when the train date was insufficient. So we compressed the parameter's dimensions and decreased the number of parameter's dimensions. At the exteriment, we compared the result of using vectors compressing mel-cepstrum by the K-L transformation with the result of using mel-cepstrum and mel-cepstrum coefficients. At the result, we got higher recognition rates of using mel-cepstrum and mel-cepstrum + regressive coefficients than that of using vectors compressing mel-cepstrum by the K-L transformation.
안종영,박창호,김상범,김주성,김수훈,허강인 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.2
A feed forward neural network has been used for the pattern classification. It has the capability of representing a desired input-output mapping through the training of a given set of teaching patterns. In this paper, we proposed recognition by GPFN and PNN a kind of RBFN. The neural network can approximate a posteriori probability through Bay's theorm, by training it with binary vectors as target pattern corresponding to the categroies of input pattern. In the phoneme recognition, we compared the recognition rate of GPFN, PNN with Hybrid(VQ, LVQ) Algorithm. We found that recognition rate of LVQ-PNN, VQ-PNN had higher then that of them.
온도 및 pH가 생물 계면활성제 생산에 미치는 영향연구
박창호,안도균,김성훈,손창규 慶熙大學校 1997 論文集 Vol.26 No.-
Biosurfactant production by Pseudomonas aeruginosa YPJ-80 in a 7 liter fermentor was best at 35℃ and pH 8 (uncontrolled) with 3.6 g/L of dry cell weight and 1.40 of emulsifying activity as determined spectrophotometrically. Controlled-pH experiments resulted in lower cell growth and biosurfactant production.