分析模块输入GREENGENES数据库的分类学注释结果，经过处理后，将未分类的标识由 "g__" 替换为 "g__norank"，注释为空的结果一律替换为： "Unclassified"。

输入：

Tax Assign分类学注释信息文件：

11469739          k__Bacteria; p__OP9; c__JS1; o__SB-45; f__; g__; s__

11480235          k__Bacteria; p__OD1; c__; o__; f__; g__; s__

11460543          Unassigned

11460523          No Blast Hit

11472286          k__Bacteria; p__WS5; c__; o__; f__; g__; s__

11458037          k__Bacteria; p__Firmicutes; c__Clostridia; o__Clostridiales; f__Peptococcaceae; g__Desulfosporosinus; s__meridiei

11472384          k__Bacteria; p__Proteobacteria; c__Betaproteobacteria; o__Burkholderiales; f__Burkholderiaceae; g__Burkholderia; s__

输出：

经过处理后的分类学注释信息文件：

11469739          k__Bacteria; p__OP9; c__JS1; o__SB-45; f__norank; g__norank; s__norank

11480235          k__Bacteria; p__OD1; c__norank; o__norank; f__norank; g__norank; s__norank

11460543          Unclassified

11460523          Unclassified

11472286          k__Bacteria; p__WS5; c__norank; o__norank; f__norank; g__norank; s__norank

11458037          k__Bacteria; p__Firmicutes; c__Clostridia; o__Clostridiales; f__Peptococcaceae; g__Desulfosporosinus; s__meridiei

11472384          k__Bacteria; p__Proteobacteria; c__Betaproteobacteria; o__Burkholderiales; f__Burkholderiaceae; g__Burkholderia; s__norank