function?[Dictionaryoutput]?=?KSVD（...
????Data...?%?an?nXN?matrix?that?contins?N?signals?（Y）?each?of?dimension?n.
????param）
%?=========================================================================
%??????????????????????????K-SVD?algorithm
%?=========================================================================
%?The?K-SVD?algorithm?finds?a?dictionary?for?linear?representation?of
%?signals.?Given?a?set?of?signals?it?searches?for?the?best?dictionary?that
%?can?sparsely?represent?each?signal.?Detailed?discussion?on?the?algorithm
%?and?possible?applications?can?be?found?in?“The?K-SVD:?An?Algorithm?for?
%?Designing?of?Overcomplete?Dictionaries?for?Sparse?Representation“?written
%?by?M.?Aharon?M.?Elad?and?A.M.?Bruckstein?and?appeared?in?the?IEEE?Trans.?
%?On?Signal?Processing?Vol.?54?no.?11?pp.?4311-4322?November?2006.?
%?=========================================================================
%?INPUT?ARGUMENTS:
%?Data?????????????????????????an?nXN?matrix?that?contins?N?signals?（Y）?each?of?dimension?n.?
%?param????????????????????????structure?that?includes?all?required
%?????????????????????????????????parameters?for?the?K-SVD?execution.
%?????????????????????????????????Required?fields?are:
%????K?...????????????????????the?number?of?dictionary?elements?to?train
%????numIteration...??????????number?of?iterations?to?perform.
%????errorFlag...??????????????if?=0?a?fix?number?of?coefficients?is
%?????????????????????????????????used?for?representation?of?each?signal.?If?so?param.L?must?be
%?????????????????????????????????specified?as?the?number?of?representing?atom.?if?=1?arbitrary?number
%?????????????????????????????????of?atoms?represent?each?signal?until?a?specific?representation?error
%?????????????????????????????????is?reached.?If?so?param.errorGoal?must?be?specified?as?the?allowed
%?????????????????????????????????error.
%????preserveDCAtom...?????????if?=1?then?the?first?atom?in?the?dictionary
%?????????????????????????????????is?set?to?be?constant?and?does?not?ever?change.?This
%?????????????????????????????????might?be?useful?for?working?with?natural
%?????????????????????????????????images?（in?this?case?only?param.K-1
%?????????????????????????????????atoms?are?trained）.
%????（optional?see?errorFlag）?L...?????????????????%?maximum?coefficients?to?use?in?OMP?coefficient?calculations.
%????（optional?see?errorFlag）?errorGoal?...????????%?allowed?representation?error?in?representing?each?signal.
%????InitializationMethod...??mehtod?to?initialize?the?dictionary?can
%?????????????????????????????????be?one?of?the?following?arguments:?
%?????????????????????????????????*?‘DataElements‘?（initialization?by?the?signals?themselves）?or:?
%?????????????????????????????????*?‘GivenMatrix‘?（initialization?by?a?given?matrix?param.initialDictionary）.
%????（optional?see?InitializationMethod）?initialDictionary...??????%?if?the?initialization?method?
%??????????????????????????????