To investigate what the optimum number of divisions for the histogram
were, it was decided to run a test with some of the sample data and
using two learners, C4.5 and IBL1
.
Figure 5.3: Graph of the relationship between error and
the number of divisions used in making the histograms.
The results of the tests on accuracy using the 6-divisions agreed upon above are shown in table 5.3.
Table 5.3: Results of learning algorithms on positional histograms.