data mining - What does `locality-sensitive` stands for in locality-sensitive hashing? -


what locality-sensitive stands in locality-sensitive hashing ? there formal definition of term ?

lsh maps high dimension vectors buckets , tries ensure vectors "near" each other mapped same bucket. definition of "near" neighborhood respect distance function (e.g. euclidean).

"locality" refers region in space; , "sensitive" means nearby locations mapped same bucket. in other words, output of hashing function depends on (is sensitive to) location in space (the locality).

this understanding. sure theoretical folks must have more formal definition. hope helps.


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