> If the only case that makes any sense is distance of ZERO then its NOT
> a metric but a kludge (distance=0 we should view as the special case
kludge
> to address a special case and not the only case).
Not that I better understand your philosophy, I have to say, that's not how
CQL sees it...
CQL views zero distance as perhaps the most important case. The default is
zero, for all units except word.
See:
http://www.loc.gov/standards/sru/cql/index.html#proximity :
distance takes the form:
distance [relation] [value]
where relation is one of: "<", ">" ,"<=" ,">=" ,"=" , "<>"; default "<="
and value is a non-negative integer; default: 1 for word, zero otherwise
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