Tregex API Link: https://nlp.stanford.edu/nlp/javadoc/javanlp/edu/stanford/nlp/trees/tregex/TregexPattern.html
Tsurgeon API Link: https://nlp.stanford.edu/nlp/javadoc/javanlp/edu/stanford/nlp/trees/tregex/tsurgeon/Tsurgeon.html
Paper talking about syntactic tree tags: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.9.8216&rep=rep1&type=pdf
Coreference Resolution Tutorial Link: https://stanfordnlp.github.io/CoreNLP/coref.html
In order to run, please download stanford-corenlp-4.2.0 from this link: https://stanfordnlp.github.io/CoreNLP/
Maybe you need stanford-tregex-2020-11-17 but this should already be included stanfrord-corenlp-4.2.0. If some error is thrown about tregex, download it from this link: https://nlp.stanford.edu/software/tregex.shtml
StanfordCoreNLPTest.java is the prototype implementation, you can use it as a reference while implementing your module.
All of the useful code are in the CoreImplementation directory ImplementationTest.java is a main class for testing your implementations DocumentParser.java preprocesses a document ParsedSentence.java stores a parsed sentences in many forms: raw text, tokens, NER labels, and Tree TregexMatcherWrapper.java is a wrapper for Tregex that we will use NounPhraseMatcher.java is an example module that uses the TregexMatcherWrapper TsurgeonWrapper.java is a wrapper for Tsurgeon that we will be using NodePruner.java is an example module that uses the TsurgeonWrapper
If you are implementing "Extract NER from found Noun Phrase", please note that NER tags are already generated and stored in ParsedSentence. Your job is to find the index of a noun phrase and find the associated NER tag for those indices.
- Penn treebank style parsing
- The PPTs in the tregex homepage
- Download tregex library from here
- Create a txt file like this
(ROOT (S (NP (PRP He)) (VP (VBZ is) (NP (NP (DT a) (NNP Master) (POS 's)) (NN Student))) (. !)))
(ROOT (SBARQ (WHNP (WP Who)) (SQ (VBZ is) (NP (NP (NNP Alvin) (POS 's)) (NN crush))) (. ?)))
./run-tregex-gui.commandto open the gui. Type in tregex patterns and visualize the results.- Some example parses as shown above can be generated by running the test file in our codebase.