Numbers are a useful filter

Using the presence of numbers as a filter
Manual review of the Service Provider field by Daphne suggested that this is a useful indicator for exclusion.

A test for the presence of a number gave these results on the gold1000A data:

These results seem to confirm the suggestion because this one rule can correctly identify about one-in-seven of the Service Providers to be excluded.

The three false positives are:


 * regional educational media center 4
 * central science laboratory-1
 * pern ipv4 allocation for air university islamabad

which in the full script would be correctly identified by the appropriate include filter term, such as 'univer' for the last example above.

Conclusion
A test for the presence of a number within the Service Provider field is a useful filter, and has been added to the apply and assess acript.