R: Calculate Score Words

calcscore {stm} | R Documentation

## Calculate Score Words

### Description

A primarily internal function for calculating words according to the score metric. We expect most users will use `labelTopics` instead.

### Usage

    calcscore(logbeta)

### Arguments

`logbeta` | a K by V matrix containing the log probabilities of seeing word v conditional on topic k

### Details

Score is a metric which we include because it is used effectively in the lda package by Jonathan Chang. It is calculated as:

β_{v, k} (\log β_{w,k} - 1 / K ∑_{k'} \log β_{v,k'})

### References

Jonathan Chang (2015). lda: Collapsed Gibbs Sampling Methods for Topic Models. R package version 1.4.2. https://CRAN.R-project.org/package=lda

### See Also

`labelTopics`

[Package stm version 1.3.6 Index]