Thread: Hash function to hash key into geographic coordinate

  1. #1
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    Post Hash function to hash key into geographic coordinate

    Dear Mr & Ms,

    I'm trying to study the hash function which hashes the key (string value) to the geographic coordinates.

    Formula: H(key) = (x,y) ;with x,y: float

    For example: H("Document") = (1.23 , 3.25) => This is only the example number, not exact.

    So I can't find the algorithm, the source code in C++ for this function. If you have one or something about that, would you please share for me ?

    Thanks for your help.

  2. #2
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    i'm not sure i understand but do you want to store value's (1.23, 3.25) with key "Document" like an associative array?
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  3. #3
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    Ah, I've read the paper "GHT: Geographic Hash Table", and in this paper, authors said that they use a hash function to hash the name of the document into a geographic coordinate: H(name) = (x,y)
    => They will store that document object at (x,y) coordinate in the network.
    So I don't know about this hash function, how it does and it's algorithm in C++.

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