ar ▁sub space ▁learning ▁Princi pal ▁component ▁analysis ▁Random ▁indexing ▁Rol ling ▁hash ▁Sing ular ▁value ▁decomposition ▁S parse ▁distributed ▁memory ▁W ave let ▁compression ▁ ▁References ▁ ▁Further ▁reading ▁ ▁Sam et , ▁H . ▁( 2 0 0 6 ) ▁Found ations ▁of ▁Mult id im ensional ▁and ▁Met ric ▁Data ▁Struct ures . ▁Morgan ▁Kauf mann . ▁ ▁External ▁links ▁ ▁Alex ▁And oni ' s ▁L SH ▁home page ▁ ▁L SH K IT : ▁A ▁C ++ ▁Loc ality ▁S ens itive ▁Hash ing ▁Library ▁ ▁A ▁Python ▁Loc ality ▁S ens itive ▁Hash ing ▁library ▁that ▁option ally ▁supports ▁pers istence ▁via ▁redis ▁ ▁Cal tech ▁Lar ge ▁Sc ale ▁Image ▁Search ▁Tool box : ▁a ▁Mat lab ▁tool box ▁implementing ▁several ▁L SH ▁hash ▁functions , ▁in ▁addition ▁to ▁K d - T rees , ▁Hier arch ical ▁K - Me ans , ▁and ▁In vert ed ▁File ▁search ▁algorithms . ▁ ▁Sl ash : ▁A ▁C ++ ▁L SH ▁library , ▁implementing ▁S pher ical ▁L SH ▁by ▁Ter as awa , ▁K ., ▁Tan aka , ▁Y ▁ ▁L SH BO X : ▁An ▁Open ▁Source ▁C ++ ▁Tool box ▁of ▁Loc ality - S ens itive ▁Hash ing ▁for ▁Lar ge ▁Sc ale ▁Image ▁Retrie val , ▁Also ▁Support ▁Python ▁and ▁M AT LAB . ▁ ▁S RS : ▁A ▁C ++ ▁Im plementation ▁of ▁An ▁In - memory , ▁Space - efficient ▁Appro xim ate ▁Near est ▁Ne igh bor ▁Query ▁Process