Rcrawler (version 0.1.1)

getDistance: Calculate Distance between two SimHash fingerprint

Description

A function that calculate the distance between two given fingerprint a _charachter_, distance is equal to 0 means the two strings are similar 100

Usage

getDistance(s1, s2)

Arguments

s1

character, the first fingerprint

s2

character, the second fingerprint

Value

return the distance as a nmeric value

Examples

# NOT RUN {
 text1<-"R is a free software environment for statistical computing and graphics.
         It compiles and runs on a wide variety of UNIX platforms, Windows and MacOS"
 text2<-"R is a language and environment for statistical computing and graphics.
         It is a GNU project which is similar to the S language and at Bell Laboratories"
 text3<-" Astronomy is the scientific study of all objects beyond our world,
           and a way to understand the physical laws and origins of the universe."

 dist1<-getDistance(getsimHash(text1,64),getsimHash(text2,64))
 #dist1 is equal to 7, means the two strings are near-duplicate.

 dist2<-getDistance(getsimHash(text1,64),getsimHash(text3,64))
 #dist2 is equal to 21, means the two strings are not similar.


# }