E- Type of tokens in the tagging.
public interface ChainCrfFeatureExtractor<E>
ChainCrfFeatureExtractorinterface specifies a method for conditional random fields to extract the necessary node and edge features for estimation and tagging.
When called from LingPipe's CRF class, the list of tags is guaranteed to be unique.
tokens- List of token objects.
tags- List of possible output tags.