Xarig-afeedku waa isku xigxiga calaamado ama jilayaal ka samaysan unug luqadeed, sida eray ama jumlad. Sayniska kombuyuutarka iyo cilmiga luqadaha, xadhiga luqadda waxaa inta badan loo soo bandhigaa sida isku xigxiga jilayaasha ama calaamado kuwaas oo lagu farsamayn karo algorithms-yada. Erayga "xarigga luqadda" waxa kale oo loo adeegsadaa dhinaca habaynta luqadda dabiiciga ah si loo tixraaco taxanaha erayada ama cutubyo kale oo luuqadeed kuwaas oo la lafaguray ama lagu habeeyey iyadoo la isticmaalayo habab xisaabeed.