▁Total ▁Le ast ▁S qu ares ▁Problem ▁and ▁Red u ction ▁of ▁Data ▁in ▁A X ▁ ≈ ▁B . ▁Doctor al ▁Th esis , ▁T U ▁of ▁Lib ere c ▁and ▁Institute ▁of ▁Computer ▁Science , ▁AS ▁CR ▁Prag ue , ▁ 2 0 0 8 . ▁Ph . D . ▁Th esis ▁ ▁C . ▁C . ▁Pa ige , ▁Z . ▁Stra ko š , ▁Core ▁problems ▁in ▁linear ▁algebraic ▁systems . ▁SI AM ▁J . ▁Matrix ▁Anal . ▁App l . ▁ 2 7 , ▁ 2 0 0 6 , ▁pp .   8 6 1 – 8 7 5 . ▁▁ ▁S . ▁Van ▁H uff el ▁and ▁P . ▁Lem mer ling , ▁Total ▁Le ast ▁S qu ares ▁and ▁Error s - in - Vari ables ▁Model ing : ▁Analysis , ▁▁ ▁Alg orithms ▁and ▁App lications . ▁D ord recht , ▁The ▁Netherlands : ▁K lu wer ▁Academ ic ▁Publish ers , ▁ 2 0 0 2 . ▁ ▁S . ▁Jo ▁and ▁S . ▁W . ▁Kim , ▁Cons istent ▁normal ized ▁least ▁mean ▁square ▁filtering ▁with ▁no isy ▁data ▁matrix . ▁IE EE ▁Trans . ▁Sign al ▁Process ., ▁vol . ▁ 5 3 , ▁no . ▁ 6 , ▁pp .   2 1 1 2 – 2 1 2 3 , ▁Jun . ▁ 2 0 0 5 . ▁ ▁R . ▁D . ▁De G ro at ▁and ▁E . ▁M . ▁Dow ling , ▁The ▁data ▁least ▁squares