findMostFreqTerms: Find Most Frequent Terms
In tm: Text Mining Package

Description Usage Arguments Details Value Examples

Find most frequent terms in a document-term or term-document matrix, or a vector of term frequencies.

findMostFreqTerms(x, n = 6L, ...)
## S3 method for class 'DocumentTermMatrix'
findMostFreqTerms(x, n = 6L, INDEX = NULL, ...)
## S3 method for class 'TermDocumentMatrix'
findMostFreqTerms(x, n = 6L, INDEX = NULL, ...)

`x`	A `DocumentTermMatrix` or `TermDocumentMatrix`, or a vector of term frequencies as obtained by `termFreq()`.
`n`	A single integer giving the maximal number of terms.
`INDEX`	an object specifying a grouping of documents for rollup, or `NULL` (default) in which case each document is considered individually.
`...`	arguments to be passed to or from methods.

Only terms with positive frequencies are included in the results.

For the document-term or term-document matrix methods, a list with the named frequencies of the up to n most frequent terms occurring in each document (group). Otherwise, a single such vector of most frequent terms.

data("crude")

## Term frequencies:
tf <- termFreq(crude[[14L]])
findMostFreqTerms(tf)

## Document-term matrices:
dtm <- DocumentTermMatrix(crude)
## Most frequent terms for each document:
findMostFreqTerms(dtm)
## Most frequent terms for the first 10 the second 10 documents,
## respectively:
findMostFreqTerms(dtm, INDEX = rep(1 : 2, each = 10L))

Loading required package: NLP

  oil  opec   the  that   was crude 
    4     4     4     3     3     2 
$`127`
   oil    the    its prices  crude    cut 
     5      5      3      3      2      2 

$`144`
 the  oil opec that  and said 
  17   11   10   10    9    9 

$`191`
     the   canada canadian    crude      for      oil 
       4        2        2        2        2        2 

$`194`
  the crude  bbl.  dlrs   for price 
    4     3     2     2     2     2 

$`211`
       the       said        and discounted  estimates        for 
         8          3          2          2          2          2 

$`236`
   the    its kuwait    and    oil    was 
    15      8      8      7      7      7 

$`237`
       the        and     report   economic government     growth 
        30         11          7          6          5          4 

$`242`
  the  were   and   oil  said after 
    6     4     3     3     3     2 

$`246`
       the        and    billion     budget        for government 
        18          9          6          6          6          6 

$`248`
   the    oil prices    and   opec   said 
    27      9      7      6      6      5 

$`273`
  the   mln   bpd  from  last saudi 
   21     9     7     7     7     7 

$`349`
     the      oil      and     arab    crude emirates 
       5        3        2        2        2        2 

$`352`
   the    oil prices  saudi    and accord 
     7      5      4      4      3      2 

$`353`
  oil  opec   the  that   was crude 
    4     4     4     3     3     2 

$`368`
   the  power    oil   ship  after closed 
    11      4      3      3      2      2 

$`489`
        the         and         for         oil       about development 
          8           5           4           4           2           2 

$`502`
  the   and   for   oil  u.s. about 
   13     6     5     4     3     2 

$`543`
    the    1.50    dlrs     for  posted company 
      5       3       3       3       3       2 

$`704`
     the  futures exchange    nymex      and     will 
      21        8        6        6        5        5 

$`708`
 january    1986,     1987  billion    cubic fiscales 
       4        2        2        2        2        2 

$`1`
 the  and  oil said  for  its 
 134   49   46   33   29   28 

$`2`
   the    oil    and    for   said prices 
    95     34     28     21     19     17