Hashing Searching Sketching

TheInformationAgehasenabledthesearchforinformationinwaysneverimaginedbefore.Thesearchcriteriamaybeexactwheretheinputqueryisexpectedtoexactlymatchthesearchobject,orfuzzy--forinstanceimagesearch,newssearch,andsimilardocumentsearch--makingthesearchproblemmuchharder.Hashingisasimple