airbnb                  Dutch reviews of AirBnB customers on Brussels
                        address locations available at
                        www.insideairbnb.com
airbnb_chunks           Dutch reviews of AirBnB customers on Brussels
                        address locations manually tagged with entities
as.crf                  Convert a model built with CRFsuite to an
                        object of class crf
crf                     Linear-chain Conditional Random Field
crf_caretmethod         Functionality allowing to tune a crfsuite model
                        using caret
crf_cbind_attributes    Enrich a data.frame by adding frequently used
                        CRF attributes
crf_evaluation          Basic classification evaluation metrics for
                        multi-class labelling
crf_options             Conditional Random Fields parameters
merge.chunkrange        CRF Training data construction: add chunk
                        entity category to a tokenised dataset
ner_download_modeldata
                        CRF Training data: download training data for
                        doing Named Entity Recognition (NER)
predict.crf             Predict the label sequence based on the
                        Conditional Random Field
txt_feature             Extract basic text features which are useful
                        for entity recognition
txt_sprintf             'NA' friendly version of sprintf
