[R] openNLP package error

[Allan Engelhardt]

Apologies that I am late on this thread.

On 02/12/10 17:39, Sascha Wolfer wrote:
> I seem to have a problem with the openNLP package, I'm actually stuck 
> in the very beginning. Here's what I did:
> > install.packages("openNLP")
> > install.packages("openNLPmodels.de", repos = 
> "http://datacube.wu.ac.at/", type = "source")
>
> > library(openNLPmodels.de)
> > library(openNLP)
>
> So I installed the main package as well as the supplementary german 
> model. Now, I try to use the "sentDetect" function:
>
> > s <- c("Das hier ist ein Satz. Und hier ist noch einer - sogar mit 
> Gedankenstrich. Ist das nicht toll?")
> > sentDetect(s, language = "de", model = "openNLPmodels.de")
>
> I get the following error message which I can't make any sense of:
>
> Fehler in .jnew("opennlp/maxent/io/SuffixSensitiveGISModelReader", 
> .jnew("java.io.File",  :
>   java.io.FileNotFoundException: openNLPmodels.de (No such file or 
> directory)

The correct syntax seems to be

sentDetect(s, model = system.file("models", "de-sent.bin", package = "openNLPmodels.de"))


but unfortunately I get

Error in .jcall(.jnew("opennlp/maxent/io/SuffixSensitiveGISModelReader",  :
   java.io.UTFDataFormatException: malformed input around byte 48


YMMV.  But you get the idea on the syntax of the model= argument.  This 
"works":

sentDetect(s, model = system.file("models", "sentdetect", "EnglishSD.bin.gz", package = "openNLPmodels.en"))
# [1] "Das hier ist ein Satz. "                            
# [2] "Und hier ist noch einer - sogar mit Gedankenstrich. "
# [3] "Ist das nicht toll?"


Hope this helps you a little.

Allan