In reference [18] reached 85.5% pass rate with 91
false drops, but we can find that the performance of our method is much better than Schneiderman's method; it can reach a high detection rate with less
false drop.
The drop that actually matches the Sq is called an actual drop and drop that fails the test is called
false drop. The next step in the query processing is the
false drop resolution.
The equations used to calculate the signature weight and width are obtained so that the
false drop probability is minimized and are proved in Roberts [1979] and Davis and Kamamohanarao [1983].
The inclusion in the database of a good selection of items in full text greatly expands the access to Peel materials (with an attendant expansion of frustration due to "
false drops," but an even greater expansion of serendipitous finds).
Better retrieval can be achieved because of the semantic values attached to the terms; this would help reduce the
false drops. Document surrogates can be prepared automatically according to the prescribed rules of the concerned indexing system--e.g., according to the principle of generating the index entries in PRECIS (Austin & Dykstra, 1984).