) ▁is ▁an ▁important ▁open ▁problem . ▁ ▁References ▁ ▁Category : Math emat ics ▁of ▁rig id ity ▁Category : Mat roid ▁theory <0x0A> </s> ▁The ▁Finn ish ▁Wikipedia ▁() ▁is ▁the ▁edition ▁of ▁Wikipedia ▁in ▁the ▁Finn ish ▁language . ▁By ▁article ▁count , ▁it ▁is ▁the ▁ 2 4 th ▁largest ▁Wikipedia ▁with ▁about ▁ ▁articles ▁as ▁of ▁ ▁. ▁Wikipedia ▁is ▁the ▁only ▁en cyc lopedia ▁in ▁Finn ish ▁which ▁is ▁still ▁updated . ▁ ▁The ▁Finn ish ▁language ▁project ▁was ▁started ▁in ▁late ▁ 2 0 0 2 , ▁but ▁it ▁remained ▁at ▁a ▁very ▁primitive ▁stage ▁until ▁well ▁into ▁ 2 0 0 3 . ▁The ▁speed ▁of ▁development ▁picked ▁up ▁somewhat ▁after ▁the ▁Media Wik i ▁software ▁was ▁upgrad ed ▁to ▁Ph ase ▁III ▁in ▁late ▁November ▁ 2 0 0 3 , ▁and ▁continued ▁to ▁increase ▁stead ily ▁through ▁ 2 0 0 4 . ▁ ▁In ▁ 2 0 1 3 ▁the ▁reli ability ▁of ▁the ▁Finn ish ▁Wikipedia ▁was ▁investig ated ▁by ▁the ▁newspaper ▁Hels ing in ▁San om at . ▁The ▁research ers ▁used ▁exper ts ▁to ▁evaluate ▁quality ▁of ▁randomly ▁selected ▁ 1 3 4 ▁articles ▁and ▁found ▁that ▁ 7 0 % ▁of ▁the ▁articles ▁scored ▁well ▁for ▁accuracy . ▁ ▁Mil est ones ▁▁ 4 5 0 , 0 0 0 ▁articles ▁- ▁January ▁ 1 2 , ▁ 2 0 1 9 ▁▁ 4 0 0 , 0 0 0 ▁articles ▁- ▁August ▁ 2 9 , ▁