Make a data.table of topic proportions.
Combines the document-topic loadings (theta) with metadata to create a data.table object for easy querying.
make.dt(model, meta = NULL)
model |
The |
meta |
Optionally, the metadata object passed to the |
This is a simple utility function that creates a data.table object which you can use to create
more complicated queries than via findThoughts. Topics are named via the convention
Topic#, for example Topic1, Topic2 etc. The object also contains docnum
which gives the index of the document so you can set keys without worrying about the texts getting
disconnected.
We expect that for the vast majority of users the functionality in findThoughts will be
sufficient.
dt <- make.dt(gadarianFit, meta=gadarian) #now we can do any query. For example the 5 least associated documents with Topic 2 in #the treated group dt[treatment==0, docnum[order(Topic2, decreasing=FALSE)][1:5]]
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