使用字数计算欧氏距离

Question

考虑以下两个句子。

Sentence 1: The quick brown fox jumps over the lazy dog.

Sentence 2: A quick brown dog outpaces a quick fox.

使用字数计算欧氏距离。

Answer 1

您可以使用包 tm 查找字数，然后计算欧氏距离

> library(tm)
> s1 <- " The quick brown fox jumps over the lazy dog"
> s2 <- "A quick brown dog outpaces a quick fox"
> 
> VS <- VectorSource(c(s1,s2))
> corp <- Corpus(VS)
> dtm <- DocumentTermMatrix(corp)
> d <- dist(t(dtm), method = 'euclidean')
> d



        brown      dog      fox    jumps     lazy outpaces     over    quick
dog      0.000000                                                               
fox      0.000000 0.000000                                                      
jumps    1.000000 1.000000 1.000000                                             
lazy     1.000000 1.000000 1.000000 0.000000                                    
outpaces 1.000000 1.000000 1.000000 1.414214 1.414214                           
over     1.000000 1.000000 1.000000 0.000000 0.000000 1.414214                  
quick    1.000000 1.000000 1.000000 2.000000 2.000000 1.414214 2.000000         
the      1.414214 1.414214 1.414214 1.000000 1.000000 2.236068 1.000000 2.236068

使用字数计算欧氏距离

Compute the Euclidean distance using word counts

nlp

text-analysis