效果如上,一句话用树状来表达,具体案例可查询stanford Sentiment Analysis网站
如何用py来画,主要参考自pytreebank-github
http://nlp.stanford.edu/sentiment/trainDevTestTrees_PTB.zip
import pytreebank
dataset = pytreebank.load_sst("/path/to/sentiment/")
pytreebank.LabeledTree.inject_visualization_javascript()
# select and example to visualize
example = dataset["train"][0]
# display it in the page
example.display()
load_sst时候需要写入官网下载数据的链接具体在哪。
for label, sentence in example.to_labeled_lines():
print("%s has sentiment label %s" % (
sentence,
["very negative", "negative", "neutral", "positive", "very positive"][label]))
具体如下:
The Rock is destined to be the 21st Century 's new `` Conan '' and that he 's going to make a splash even greater than Arnold Schwarzenegger , Jean-Claud Van Damme or Steven Segal . has sentiment label positive
The Rock has sentiment label neutral
The has sentiment label neutral
Rock has sentiment label neutral
is destined to be the 21st Century 's new `` Conan '' and that he 's going to make a splash even greater than Arnold Schwarzenegger , Jean-Claud Van Damme or Steven Segal . has sentiment label very positive
is destined to be the 21st Century 's new `` Conan '' and that he 's going to make a splash even greater than Arnold Schwarzenegger , Jean-Claud Van Damme or Steven Segal has sentiment label positive
is has sentiment label neutral
destined to be the 21st Century 's new `` Conan '' and that he 's going to make a splash even greater than Arnold Schwarzenegger , Jean-Claud Van Damme or Steven Segal has sentiment label very positive
destined has sentiment label neutral
to be the 21st Century 's new `` Conan '' and that he 's going to make a splash even greater than Arnold Schwarzenegger , Jean-Claud Van Damme or Steven Segal has sentiment label neutral
to be the 21st Century 's new `` Conan '' and has sentiment label neutral
to be the 21st Century 's new `` Conan '' has sentiment label neutral
to be the 21st Century 's new `` Conan has sentiment label neutral
to has sentiment label neutral
pytreebank.LabeledTree.inject_visualization_javascript()
pytreebank.create_tree_from_string('(4 (0 你) (3 (2 是) (3 (3 (3 谁) (2 的)) (2 谁))))').display()
4代表总共有四个节点, (0 你)代表,‘你’这个字的情感点; 编号的意义为: 0–>”very negative”, 1–> “negative” 2–>, “neutral” 3–>, “positive” 4–>, “very positive”
pytreebank.create_tree_from_string('(4 (0 你) (3 (2 是) (3 (3 (3 谁) (2 的)) (2 谁))))').to_dict()
把结果导出成dict形式
pytreebank.create_tree_from_string('(4 (0 你) (3 (2 是) (3 (3 (3 谁) (2 的)) (2 谁))))').to_json()
把结果导出成json形式
pytreebank.create_tree_from_string('(4 (0 你) (3 (2 是) (3 (3 (3 谁) (2 的)) (2 谁))))').to_lines()
把结果导出成一列文字形式
pytreebank.create_tree_from_string('(4 (0 你) (3 (2 是) (3 (3 (3 谁) (2 的)) (2 谁))))').to_lines()
把结果导出成to_labeled_lines形式