Thanks Chris. !! Manoj.
On Mon, Aug 21, 2017 at 11:01 AM, Chris Collins < [email protected]> wrote: > > Perhaps you may want to understanding the difference between a constituent > parser and a dependency parser. From my uneducated POV the OpenNLP parser > is a constituent parser. You will notice constituent and dependency aren > still called “parsers” in general circles. Guess that cleared things up > like mud :-} > > Here is a brief description of the difference on stack overflow: > > https://stackoverflow.com/questions/10401076/difference- > between-constituency-parser-and-dependency-parser < > https://stackoverflow.com/questions/10401076/difference- > between-constituency-parser-and-dependency-parser> > > > On Aug 18, 2017, at 7:51 AM, Dan Russ <[email protected]> wrote: > > > > Hello Manoj, > > > > This is more a job for Wikipedia than opennlp’s dev mail list. > https://en.wikipedia.org/wiki/Parsing <https://en.wikipedia.org/ > wiki/Parsing> https://en.wikipedia.org/wiki/Shallow_parsing < > https://en.wikipedia.org/wiki/Shallow_parsing> > > > > Essentially, the term “parsing” is a generic term that takes input text > and breaks it up into parts using certain rules (wikipedia refers to this > as a grammar). Think of java's Integer.parseInt(String s). OpenNLP has a > StringTokenizer that “parses” strings into constituent words based on > whitespace (WhitespaceTokenizer) or a statistically training model > (TokenizerME). A Chunker on the other hand takes the constituent words and > puts them together to make a larger construct (think of a phrase). So…. > If you want to get noun or verb phrases use a chunker. It is also very > useful if you are interested in identifying relationships between words. I > believe the Stanford NLP dependencies use chunking, for more info on that > https://nlp.stanford.edu/software/stanford-dependencies.shtml#English < > https://nlp.stanford.edu/software/stanford-dependencies.shtml#English> . > If I am wrong about the Stanford Dependencies, maybe someone will correct > me... > > > > > > Hope it helps, > > Daniel > > > > > > > >> On Aug 18, 2017, at 9:50 AM, Manoj B. Narayanan < > [email protected]> wrote: > >> > >> Hi, > >> > >> Could someone help me with this please ? > >> > >> Thanks, > >> Manoj. > >> > >> On Tue, Aug 8, 2017 at 1:16 PM, Manoj B. Narayanan < > >> [email protected]> wrote: > >> > >>> Hi, > >>> > >>> Can some one please explain the difference between Parser and Chunker > in > >>> OpenNLP. > >>> I think we can get the same output of the Parser from Chunker output > >>> itself. > >>> Please correct me if I am wrong. > >>> > >>> Thanks. > >>> Manoj. > >>> > > > >
