python - Logistic Regression Bigram Text Classification w/ Patsy -


i'm working on upgrading logisticregression text classification single word features bigrams (two word features). when include 2 word feature in formula sent patsy.dmatrices, receive following error...

y, x = dmatrices("is_host ~ dedicated + hosting + dedicated hosting", df, return_type="dataframe")    file "<string>", line 1     dedicated hosting                 ^ syntaxerror: unexpected eof while parsing

i've looked around online examples on how approach , haven't found anything. tried throwing few different syntax options @ formula , none seem work.

"is_host ~ dedicated + hosting + {dedicated hosting}" "is_host ~ dedicated + hosting + (dedicated hosting)" "is_host ~ dedicated + hosting + [dedicated hosting]"

what proper way include multi-word features in formula passed dmatricies?

you want:

y, x = dmatrices("is_host ~ dedicated + hosting + q('dedicated hosting')", df, return_type="dataframe")

q short quote.


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