Hierarchy of Transform

It is possible to specify a hierarchy of transformations. This results from using a parent transform during the training process.
Figure 9.5: Example of an MLLR transform using with a parent transform
\begin{figure}\begin{verbatim}~a \lq\lq mjfg'' <ADAPTKIND> TREE <BASECLASSES> ~b... ... <CLASSXFORM> 2 1 <CLASSXFORM> 3 1 <CLASSXFORM> 4 2\end{verbatim}\end{figure}
Figure 9.5 shows the use of a set of MLLR transforms generated using a parent CMLLR transform stored in the macro ``cued''. The action of this transform is
  1. Apply transform cued
  2. Apply transform mjfg
The parent transform is always applied before the transform itself.

Hierarchy of transforms automatically result from using a parent transform when estimating a transform.

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