Using openNLP

openNLP_parse_annotator.Rmd

``` r
# running 

## Requires package 'openNLPmodels.en' from the repository at
## <http://datacube.wu.ac.at>.

# install.packages("openNLPmodels.en", 
#                  repos = "http://datacube.wu.ac.at/", 
#                  type = "source") 

require("NLP")
require("openNLP")
## Some text.
s <- paste(c("Pierre Vinken, 61 years old, will join the board as a ",
             "nonexecutive director Nov. 29.\n",
             "Mr. Vinken is chairman of Elsevier N.V., ",
             "the Dutch publishing group."),
           collapse = "")
s <- as.String(s)

## Need sentence and word token annotations.
sent_token_annotator <- Maxent_Sent_Token_Annotator()
word_token_annotator <- Maxent_Word_Token_Annotator()
a2 <- annotate(s, list(sent_token_annotator, word_token_annotator))

parse_annotator <- Parse_Annotator()
#> Error in .jnew("opennlp.tools.parser.ParserModel", .jcast(.jnew("java.io.FileInputStream", : java.lang.OutOfMemoryError: Java heap space
## Compute the parse annotations only.
p <- parse_annotator(s, a2)
#> Error in eval(expr, envir, enclos): could not find function "parse_annotator"
## Extract the formatted parse trees.
ptexts <- sapply(p$features, `[[`, "parse")
#> Error in lapply(X = X, FUN = FUN, ...): object 'p' not found
ptexts
#> Error in eval(expr, envir, enclos): object 'ptexts' not found
## Read into NLP Tree objects.
ptrees <- lapply(ptexts, Tree_parse)
#> Error in lapply(ptexts, Tree_parse): object 'ptexts' not found
ptrees
#> Error in eval(expr, envir, enclos): object 'ptrees' not found

session_info()
#> Session info -------------------------------------------------------------
#>  setting  value                       
#>  version  R version 3.3.2 (2016-10-31)
#>  system   x86_64, darwin13.4.0        
#>  ui       RStudio (1.0.44)            
#>  language (EN)                        
#>  collate  en_AU.UTF-8                 
#>  tz       Australia/Brisbane          
#>  date     2016-12-22
#> Packages -----------------------------------------------------------------
#>  package     * version     date       source                            
#>  backports     1.0.4       2016-10-24 cran (@1.0.4)                     
#>  clipr         0.3.0       2016-11-19 cran (@0.3.0)                     
#>  crayon        1.3.2       2016-06-28 cran (@1.3.2)                     
#>  devtools    * 1.12.0.9000 2016-12-18 Github (hadley/devtools@1ce84b0)  
#>  digest        0.6.10      2016-08-02 cran (@0.6.10)                    
#>  evaluate      0.10        2016-10-11 cran (@0.10)                      
#>  htmltools     0.3.5       2016-03-21 CRAN (R 3.3.0)                    
#>  knitr         1.15.6      2016-12-18 Github (yihui/knitr@849f2d0)      
#>  magrittr      1.5         2014-11-22 CRAN (R 3.3.0)                    
#>  memoise       1.0.0.9001  2016-12-18 Github (hadley/memoise@884d565)   
#>  NLP         * 0.1-9       2016-02-18 CRAN (R 3.3.0)                    
#>  openNLP     * 0.2-6       2016-02-18 CRAN (R 3.3.0)                    
#>  openNLPdata   1.5.3-2     2015-06-24 CRAN (R 3.3.0)                    
#>  pkgbuild      0.0.0.9000  2016-12-18 Github (r-pkgs/pkgbuild@65eace0)  
#>  pkgload       0.0.0.9000  2016-12-18 Github (r-pkgs/pkgload@def2b10)   
#>  R6            2.2.0       2016-10-05 cran (@2.2.0)                     
#>  Rcpp          0.12.8.2    2016-12-18 Github (RcppCore/Rcpp@e4ca728)    
#>  reprex        0.0.0.9001  2016-09-11 Github (jennybc/reprex@826ddf4)   
#>  rJava         0.9-8       2016-01-07 CRAN (R 3.3.0)                    
#>  rmarkdown     1.2.9000    2016-12-18 Github (rstudio/rmarkdown@f94f2f7)
#>  rprojroot     1.1         2016-10-29 cran (@1.1)                       
#>  stringi       1.1.2       2016-10-01 cran (@1.1.2)                     
#>  stringr       1.1.0       2016-08-19 CRAN (R 3.3.0)                    
#>  testthat    * 1.0.2.9000  2016-12-18 Github (hadley/testthat@49e68d1)  
#>  withr         1.0.2       2016-06-20 cran (@1.0.2)
```