What do the abbreviations in POS tagging etc mean?

问题

Say I have the following Penn Tree:

(S (NP-SBJ the steel strike)
 (VP lasted
     (ADVP-TMP (ADVP much longer)
               (SBAR than
                     (S (NP-SBJ he)
                        (VP anticipated
                            (SBAR *?*))))))
 .)

What do abbrevations like VP and SBAR etc mean? Where can I find these definitions? What are these abbreviations called?

回答1:

Those are the Penn Treebank tags, for example, VP means "Verb Phrase". The full list can be found here

回答2:

The full list of Penn Treebank POS tags (so-called tagset) including examples can be found on https://www.sketchengine.eu/penn-treebank-tagset/

If you are interested in detail information on POS tag or POS tagging, see a brief manual for beginners on https://www.sketchengine.co.uk/pos-tags/

回答3:

VP means verb phrase . these are standard abbreviation in the treebank.

来源：https://stackoverflow.com/questions/7853295/what-do-the-abbreviations-in-pos-tagging-etc-mean