The eliminating duplicated web pages based on MD5 have been applied in many fields because it is efficient and simple.But the MD5 is a strict algorithm,the result will be very different if input has a little difference.So,this method couldn' t have a higher recalled rate.This page presents two improved algorithms.The thought of algorithms puts web content into words space,and calculates the distance between two words spaces.Then,the similar rate between two sentences is determined by the distance of two spa...