New answers tagged search-algorithms
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It's not explicitly defined - rather there's an implicit subindex (based off the table's size) to the hash-function. At the start we had e.g., $h(0) = h_7(0) = 3$. They are then informing you that $h_14(0) = 8$. There is no explained reason for this. They then re-insert the data to the larger hash table going over the old data in the order it appears in the ...
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If your shapes are not too elongated, you could calculate their axis-aligned bounding boxes (BBs) and store these bounding boxes in an index, such as R-Tree, quadtree or one of their more modern variants.
Then:
Define a distance function that gives the closest BB to the BB of your search-object.
Find the BB in the index that is closest to the BB of you ...
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The best I can come up with is to compute the centroid of each object and store the centroids in a nearest-neighbor data structure; to find the matches for a test object $T$, look up its centroid in the data structure and iterate through the objects in order of the distance between their centroid and $T$'s centroid and compute the distance to each. The ...
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In general, we definitely don't know this. In fact, it's practically always so that a-priori, we don't know how well a particular metaheuristic performs (let alone proving optimality) on a given instance (or family of instances) until we try.
It should also be noted that we usually go for metaheuristics only when the problem is so hard it seems unlikely it ...
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I am not able to clearly understand your use case, but from what I infer I believe if you are trying to de-dupe data on other features, the approach would be to use LSH(Locality Sensitive Hashing) you can see the following links to get an overview. hope this helps.
https://stackoverflow.com/questions/12952729/how-to-understand-locality-sensitive-hashing
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There's no set answer, as it depends on the number of nodes in the graph, the average number of nodes in the queue at any point in time, and the average length of paths.
"Considered better" is a matter of opinion, and on this site, we focus on technical questions rather than opinion.
If it were me, I would use predecessor pointers as my default, unless I ...
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