Let us consider one simple example of a temporal classification
problem. Consider the task of recognising signs from a sign
language
using instrumented gloves. The glove provides the information shown in
table 4.1.
Table 4.1: Information from gloves
Each of these measurements represents a channel. A single capture of a sign is a stream. An example of a stream is shown in figure 4.2.
Figure 4.2: An example of a stream from the sign recognition
domain with the label come.
In the sign recognition domain, the set 
would consist of the
names of different signs, like come, name, and so
on. The set 
is the set of all possible signs, and we only have
available to us a limited subset of .