Description Usage Arguments Value Author(s) See Also Examples
term frequency, inverse document frequency
1 |
x |
A |
normalize |
Whether to normalize term frequency by document totals. |
A matrix of the same type as x
, with values replaced by the tf-idf
f_{ij} * \log[n/(d_j+1)],
where f_{ij} is x_{ij}/m_i or x_{ij}, depending on normalize
,
and d_j is the number of documents containing token j.
Matt Taddy taddy@chicagobooth.edu
pls, we8there
1 2 3 4 5 6 | data(we8there)
## 20 high-variance tf-idf terms
colnames(we8thereCounts)[
order(-sdev(tfidf(we8thereCounts)))[1:20]]
|
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.