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2. Loading the Matlab data into VIBES
Before we can load the data, we must create a model to attach the data to. This is
achieved by creating a node with the name x (this must be the same name
as the data matrix in the Matlab .mat file). As the data matrix
is two-dimensional, the node is placed inside two
plates N and d (again corresponding to the names of the variables
in the matlab file).
The model then looks like the diagram below. You must now save the model to the directory
where the Matlab file is stored.
Note: If you want to skip constructing this network by hand, it is
in the tutorial file called DataOnly.xml .
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We are now ready to load the Matlab file. The filename (in this case
MixGaussianData2D.mat ) is entered as shown in the diagram (if necessary
clicking to unselect any selected nodes or plates). Choosing
File->Load data will then load the data into the
node and also set the size of the N and d plates. The node x will then be marked as observed (shown with a bold edge) and
the observed data can be inspected by double-clicking
the node with the mouse:
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