Microsoft has a very nice implementation for its Book Search.
See here for some examples ‘C Elegans and Mutations’, or ‘Girard and Scapegoats’, and ‘Quine and “semantic ascent”‘
When you mouse over the individual titles in the search results the second panel shows information specific to the title: including a rule which shows the distribution of the search results within the title (the rule is imperial rather than metric, or maybe its binary: it has 32 segments). That … Keep Reading