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如何进行批量差异分析并绘制其火山图及拼图

上周,曾老师给了我一个8个样本8个组别的转录组数据,即每组只有一个样本的转录组数据。我的处理方式是从中抽取两组进行差异分析,与文中描述的显著差异基因数目以及文中指出的差异基因进行比较,看看分析结果是否大致相同。但是,其实我有些没有理解到老师的意思。老师的初衷是想同原文一样批量绘制「同个部位」两两组别间的差异分析结果,看看其差异基因数量的分布,然后进行比较。在看到我理解偏差后,老师还飞快地给我提供了单样本批量差异分析的脚本。「因此,本周我们主要重点展示如何批量进行单样本差异分析以及批量绘制火山图并拼图」。

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hadoop记录

RDBMS Hadoop Data Types RDBMS relies on the structured data and the schema of the data is always known. Any kind of data can be stored into Hadoop i.e. Be it structured, unstructured or semi-structured. Processing RDBMS provides limited or no processing capabilities. Hadoop allows us to process the data which is distributed across the cluster in a parallel fashion. Schema on Read Vs. Write RDBMS is based on ‘schema on write’ where schema validation is done before loading the data. On the contrary, Hadoop follows the schema on read policy. Read/Write Speed In RDBMS, reads are fast because the schema of the data is already known. The writes are fast in HDFS because no schema validation happens during HDFS write. Cost Licensed software, therefore, I have to pay for the software. Hadoop is an open source framework. So, I don’t need to pay for the software. Best Fit Use Case RDBMS is used for OLTP (Online Trasanctional Processing) system. Hadoop is used for Data discovery, data analytics or OLAP system. RDBMS 与 Hadoop

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hadoop记录 - 乐享诚美

RDBMS Hadoop Data Types RDBMS relies on the structured data and the schema of the data is always known. Any kind of data can be stored into Hadoop i.e. Be it structured, unstructured or semi-structured. Processing RDBMS provides limited or no processing capabilities. Hadoop allows us to process the data which is distributed across the cluster in a parallel fashion. Schema on Read Vs. Write RDBMS is based on ‘schema on write’ where schema validation is done before loading the data. On the contrary, Hadoop follows the schema on read policy. Read/Write Speed In RDBMS, reads are fast because the schema of the data is already known. The writes are fast in HDFS because no schema validation happens during HDFS write. Cost Licensed software, therefore, I have to pay for the software. Hadoop is an open source framework. So, I don’t need to pay for the software. Best Fit Use Case RDBMS is used for OLTP (Online Trasanctional Processing) system. Hadoop is used for Data discovery, data analytics or OLAP system. RDBMS 与 Hadoop

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