Optimal Best Match Retrieval
Optimal Best Match Retrieval
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In our eReader you can find the full English version of the book. Read Optimal Best Match Retrieval Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Optimal Best Match Retrieval
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While the gain is slightly less, the total computation becomes much cheaper. (This may be important if one occasionally needs answers quickly to the best-match problem and then fills in the distance map at leisure. ) We then compared the number of comparisons our heuristic required with the minimum possible. Empiri- cally, our heuristic was within 20% of the optimum for a database of size 20. This result is encouraging, given the fact that we have no way of knowing a pnori what the best distanc...es to calculate are.
4. 2 Non-Uniformly Distributed Distances To see the effect of non-uniform distribution for distances between objects, we have performed two extremum experiments on maps with densities 1, 0. 5, 0. 01, respectively (they represent complete, half complete and very sparse maps).
'We ran the experiments on several other ranges sj\A obtained similar results. This agrees with our intuition that the distance range should not have any effect on the performance of the algorithms.
11 In the first experiment, we considered databases in wiiich objects are far from one another, but one is very close to the target T.
What to read after Optimal Best Match Retrieval?
You can find similar books in the "Read Also" column, or choose other free books by Dennis Shasha to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
While the gain is slightly less, the total computation becomes much cheaper. (This may be important if one occasionally needs answers quickly to the best-match problem and then fills in the distance map at leisure. ) We then compared the number of comparisons our heuristic required with the minimum possible. Empiri- cally, our heuristic was within 20% of the optimum for a database of size 20. This result is encouraging, given the fact that we have no way of knowing a pnori what the best distanc...es to calculate are.
4. 2 Non-Uniformly Distributed Distances To see the effect of non-uniform distribution for distances between objects, we have performed two extremum experiments on maps with densities 1, 0. 5, 0. 01, respectively (they represent complete, half complete and very sparse maps).
'We ran the experiments on several other ranges sj\A obtained similar results. This agrees with our intuition that the distance range should not have any effect on the performance of the algorithms.
11 In the first experiment, we considered databases in wiiich objects are far from one another, but one is very close to the target T.
What to read after Optimal Best Match Retrieval?
You can find similar books in the "Read Also" column, or choose other free books by Dennis Shasha to read onlineMoreLess
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