spectral class

It is pointed out that the spectral class c is possibly originated from the nonhomogeneity of the source even if the internal absorption in the source is neglected.

指出，由于源本身的不均匀性即可产生c型谱（低频倒转），即使源本身是光学薄的，完全忽略其内吸收。

Spectral clustering as a class of new and effective clustering method has been the major research in the field of machine learning.

谱聚类作为一类新兴的、高性能的聚类方法，目前已成为国际上机器学习领域的研究热点。

On a class of spectral measures in an Banach space

关于巴拿赫空间上的一类谱测度

Spectral clustering as a class of new and effective clustering method has been widely concerned and successfully applied in image segmentation.

谱聚类作为一类新兴的、有效的聚类方法得到广泛的关注，并已成功的应用于图像分割。

The inter spectral redundancy and intra spectral redundancy can be eliminated mostly by multilevel clustering algorithm with quickly convergent K means classification and the method clearing redundancy at step through enhancing the intra class pixel redundancy.

多层次聚类无损压缩就是利用改进的K-means聚类算法具有快速收敛的特点，和利用分层次去冗余的方法来聚类，因此可最大限度消除残差冗余。