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中文摘要：
随着二代测序技术的发展，产生了海量16SrRNA基因序列数据．如何有效地挖掘这些数据中隐藏的基因组学信息，是当前研究的热点与难点．序列聚类研究如何将来源于同一物种的序列合并在一起，其构成了物种多样性、结构及功能多样性研究的基础．针对454测序误差的来源特点，提出一种基于邻域种子序列的启发式序列聚类算法（NbHClust）．实验结果表明，该算法具有良好的鲁棒性能．与传统启发式序列聚类算法相比，该算法能够降低操作分类单元（叩erationaltaxonomyunit，简称0TU）过估计问题，提高聚类精度，有效地进行操作分类单元计算．
英文摘要：
With the development of next-generation sequencing technology, a large number of 16S rRNA gene reads have been collected. A key and important issue is to develop novel methods for mining the hidden information among those data. Sequence clustering aims to find the natural groups of large-scale data which can help us to understand the species, functional and structural diversity of microbial communities. This present work proposes a heuristic clustering method based on Neighbor-seeds, named NbHClust, for 454 sequencing data. The results show that this method can reduce extent of overestimation of operational taxonomy unit （OTU） and have a good robust and high clustering accuracy.
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