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Subprocess
As your processes grow in size, you will need some way to manage their complexity. Notice that some Operators are containers; they hide the details of your process, and help to keep your top-level process relatively simple. Inside are one or more subprocesses.
The Cross Validation
Operator provides a good illustration:
this Operator contains two subprocesses, a training subprocess and a testing subprocess.
The design of the icon, as for all Operators containing subprocesses, suggests a hidden layer.
Double-click the Operator to examine its internals; click on the Process
link to return to the parent process.
Question: How do I build my own container, with my own subprocesses?
Answer: The Subprocess
Operator is a generic container. Use it to create your own subprocesses.
There are at least two possible approaches to using the Subprocess
Operator:
Add the
Subprocess
Operator to your process. Double-click to open it, then add whatever Operators you like.Select a subset of Operators from your process with Ctrl-click, then right-click the selection and choose the context menu item
Move into new subprocess
. A newSubprocess
Operator appears, containing your subset of Operators.
Since the Subprocess
Operator is completely generic, it's helpful to rename it so that the name reflects your content. Right-click on the Operator, and choose Rename operator
from the context menu.
Building blocks
Just as you can save and reuse a process, you can save and reuse a subprocess. The saved subprocess is called a building block. After selecting the subprocess, you can save it in either of the following ways:
- From the main menu, select
Edit
>Save as Building Block
- Right-click the subprocess, and from the context menu select
Save as Building Block
.
Your building blocks are saved as XML files (extension .buildingblock
) in the .RapidMiner
folder.
Once you have saved the building block, you can recover it in one of the following ways:
- From the main menu, select
Edit
>Insert Building Block
. Make sure that in the Process Panel no Operator has been selected, or this menu item will not appear. - Right-click inside the Process Panel, and from the context menu select
Insert Building Block
.
To delete a building block, select Settings
> Manage Building Blocks
from the main menu,
and choose the building block you want to delete.
Notice that some often-used building blocks are bundled with RapidMiner Studio.
In addition, the RapidMiner Community makes available
shared building blocks,
which you can find in the Repository under Community Samples
> Community Building Blocks
.