▁The ▁P iano ▁in ▁a ▁Factory '' ▁▁ ▁Fil mm aker : ▁Z hu ▁X u ▁ ▁References ▁ ▁External ▁links ▁▁ ▁Result ▁of ▁ 2 8 th ▁Golden ▁Ro oster ▁Awards ▁▁ 2 0 1 0 - 2 0 1 1 ▁Golden ▁Gold <0x0A> </s> ▁In ▁statistics , ▁H od ges ’ ▁estim ator ▁( or ▁the ▁H od ges – Le ▁Cam ▁estim ator ), ▁named ▁for ▁Joseph ▁H od ges , ▁is ▁a ▁famous ▁counter example ▁of ▁an ▁estim ator ▁which ▁is ▁" sup ere fficient ", ▁i . e . ▁it ▁att ains ▁smaller ▁asympt otic ▁variance ▁than ▁regular ▁efficient ▁estim ators . ▁The ▁existence ▁of ▁such ▁a ▁counter example ▁is ▁the ▁reason ▁for ▁the ▁introduction ▁of ▁the ▁notion ▁of ▁regular ▁estim ators . ▁ ▁H od ges ’ ▁estim ator ▁impro ves ▁upon ▁a ▁regular ▁estim ator ▁at ▁a ▁single ▁point . ▁In ▁general , ▁any ▁sup ere fficient ▁estim ator ▁may ▁sur pass ▁a ▁regular ▁estim ator ▁at ▁most ▁on ▁a ▁set ▁of ▁Leb es gue ▁measure ▁zero . ▁ ▁Const ruction ▁ ▁Suppose ▁ ▁is ▁a ▁" common " ▁estim ator ▁for ▁some ▁parameter ▁ θ : ▁it ▁is ▁consistent , ▁and ▁converges ▁to ▁some ▁asympt otic ▁distribution ▁L θ ▁( us ually ▁this ▁is ▁a ▁normal ▁distribution ▁with ▁mean ▁zero ▁and ▁variance ▁which ▁may ▁depend ▁on ▁ θ ) ▁at ▁the ▁: ▁▁▁ ▁Then ▁the ▁H od ges ’ ▁estim ator ▁ ▁is ▁defined ▁as ▁▁▁ ▁This ▁estim ator ▁is ▁equal ▁to ▁ ▁everywhere ▁except