针对短期噪声序列的lyapunov指数计算，强烈推荐，值得一看-Calculating lyapunov exponents for short and or noisy data sets

This paper presents a new cluster validity index for nding a suitable number of fuzzy clusters with crisp and fuzzy data. The new index, called the ECAS-index, contains exponential compactness and separation measures. These measures indicate ho