Introduce word usage statistics for addresses #3367
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Word frequency in names is not sufficient to interpolate word frequency in the address because names of towns, states etc. are much more frequently used than, say street names.
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We already have word usage statistics over the names of places. These are not very helpful during address lookup because word distribution is very different in addresses. Names of states and cities show up much more frequently than names of POIs or streets. With separate statistics it will be easier to optimise index use when looking up address terms.