问题
So I got the "standard" Stanford Parser to work thanks to danger89's answers to this previous post, Stanford Parser and NLTK.
However, I am now trying to get the dependency parser to work and it seems the method highlighted in the previous link no longer works. Here is my code:
import nltk
import os
java_path = "C:\\Program Files\\Java\\jre1.8.0_51\\bin\\java.exe"
os.environ['JAVAHOME'] = java_path
from nltk.parse import stanford
os.environ['STANFORD_PARSER'] = 'path/jar'
os.environ['STANFORD_MODELS'] = 'path/jar'
parser = stanford.StanfordDependencyParser(model_path="path/jar/englishPCFG.ser.gz")
sentences = parser.raw_parse_sents(nltk.sent_tokenize("The iPod is expensive but pretty."))
I get the following error: 'module' object has no attribute 'StanfordDependencyParser'
The only thing I changed was "StanfordDependencyParser" from "StanfordParser". Any ideas how I can get this to work?
I also tried the Stanford Neural Dependency parser by importing it as shown in the documentation here: http://www.nltk.org/_modules/nltk/parse/stanford.html
This one didn't work either.
Pretty new to NLTK. Thanks in advance for any helpful input.
回答1:
The StanfordDependencyParser API is a new class object created since NLTK version 3.1.
Ensure that you have the latest NLTK available either through pip
pip install -U nltk
or through your linux package manager, e.g.:
sudo apt-get python-nltk
or in windows, download https://pypi.python.org/pypi/nltk and install and it should overwrite your previous NLTK version.
Then you can use the API as shown in the documentation:
from nltk.parse.stanford import StanfordDependencyParser
dep_parser=StanfordDependencyParser(model_path="edu/stanford/nlp/models/lexparser/englishPCFG.ser.gz")
print [parse.tree() for parse in dep_parser.raw_parse("The quick brown fox jumps over the lazy dog.")]
[out]:
[Tree('jumps', [Tree('fox', ['The', 'quick', 'brown']), Tree('dog', ['over', 'the', 'lazy'])])]
(Note: Make sure you get your path to jar and os.environ correct, in Windows, it's something\\something\\some\\path, in unix it's something/something/some/path)
See also https://github.com/nltk/nltk/wiki/Installing-Third-Party-Software#stanford-tagger-ner-tokenizer-and-parser and when you need a TL;DR solution, see https://github.com/alvations/nltk_cli
回答2:
If the only thing you changed was 'StanfordDependencyParser' and the error states: module' object has no attribute 'StanfordDependencyParser' I would assume that StanfordDependencyParser was the wrong thing to change it to. Have you copied all of the code that you linked to verbatim?
来源：https://stackoverflow.com/questions/34053021/stanford-dependency-parser-setup-and-nltk