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Jessica May's Blog Posts Tagged 'programming' (2)

A use case to read and analyze Excel data in Java

Generally, Java programmers use poi or other open source packages to read and compute Excel data. These open source packages support low-level programming, which increases the overall learning cost and complicates the operation. But with the help of esProc, Java can avoid these problems.…

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Added by Jessica May on October 8, 2014 at 12:26am — No Comments

A Method of Grouping and Summarizing Data of Big Text Files in R Language

It is common to use R language to group and summarize data of files. Sometimes we may find ourselves processing comparatively big files which have smaller computed result and bigger source data. We cannot load them wholly to the memory when we need to compute them. The only solutions could be batch importing and computing as well as result merging. We’ll use an example in the following to illustrate the way of R language to group and summarize data from big text files.

Here is a file,…

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Added by Jessica May on August 24, 2014 at 8:54pm — 2 Comments

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