I thought I would see how Leidner's proposed TR works with the data and documents I have. Since I use street level data ambiguity can be much worse. This is a problem because there is a stage which tests all posible combinations of locations and builds an MBR for each, the area of this is the minimised.
I have a document with only 34 placenames in it which results in a matrix with 4 followed by 16 zeros more or less elements. "Union Road" for example appears 90 times in the resource, Norton 38 times and so-on.
Since I also use the web to find documents the chances are that there are documents with many more distinct place names in them. Some of these will also have big ambiguity. I think this makes thing unworkable in the proposed form. Another win for the apparently simplistic centroid method.
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