Digital Signal Processing Reference
In-Depth Information
A critical issue related to the multiple units approach is how to select the
most reliable output on the basis of a confidence score. Anyway, even
adopting the simplest strategy of selecting the output string on the basis of its
likelihood (ML), a considerable improvement has been observed, as shown in
Table 6-3. Moreover, once the recognition engine is integrated on the
complete system, the DM is in principle able to predict the most likely
domains of the following interaction step, or to assign a proper weight to the
members of the geographical classes. Only a few recognition units should
therefore remain active, on the basis of the DM's prediction.
