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pytextclassifier is a toolkit for text classification. 文本分类,LR,Xgboost,TextCNN,FastText,TextRNN,BERT等分类模型实现,开箱即用。

Home Page: https://shibing624.github.io/pytextclassifier/

License: Apache License 2.0

Python 100.00%
text-classification nlp machine-learning text-classifier pytextclassifier bert classification python softmax focalloss-pytorch

pytextclassifier's Introduction


PyTextClassifier: Python Text Classifier

PyPI version Downloads Contributions welcome License Apache 2.0 python_vesion GitHub issues Wechat Group

Introduction

PyTextClassifier: Python Text Classifier. It can be applied to the fields of sentiment polarity analysis, text risk classification and so on, and it supports multiple classification algorithms and clustering algorithms.

pytextclassifier is a python Open Source Toolkit for text classification. The goal is to implement text analysis algorithm, so to achieve the use in the production environment.

文本分类器,提供多种文本分类和聚类算法,支持句子和文档级的文本分类任务,支持二分类、多分类、多标签分类、多层级分类和Kmeans聚类,开箱即用。python3开发。

Guide

Feature

pytextclassifier has the characteristics of clear algorithm, high performance and customizable corpus.

Functions:

Classifier

  • LogisticRegression
  • Random Forest
  • Decision Tree
  • K-Nearest Neighbours
  • Naive bayes
  • Xgboost
  • Support Vector Machine(SVM)
  • TextCNN
  • TextRNN
  • Fasttext
  • BERT

Cluster

  • MiniBatchKmeans

While providing rich functions, pytextclassifier internal modules adhere to low coupling, model adherence to inert loading, dictionary publication, and easy to use.

Install

  • Requirements and Installation
pip3 install torch # conda install pytorch
pip3 install pytextclassifier

or

git clone https://github.com/shibing624/pytextclassifier.git
cd pytextclassifier
python3 setup.py install

Usage

Text Classifier

English Text Classifier

Including model training, saving, predict, evaluate, for example examples/lr_en_classification_demo.py:

import sys

sys.path.append('..')
from pytextclassifier import ClassicClassifier

if __name__ == '__main__':
    m = ClassicClassifier(output_dir='models/lr', model_name_or_model='lr')
    # ClassicClassifier support model_name:lr, random_forest, decision_tree, knn, bayes, svm, xgboost
    print(m)
    data = [
        ('education', 'Student debt to cost Britain billions within decades'),
        ('education', 'Chinese education for TV experiment'),
        ('sports', 'Middle East and Asia boost investment in top level sports'),
        ('sports', 'Summit Series look launches HBO Canada sports doc series: Mudhar')
    ]
    # train and save best model
    m.train(data)
    # load best model from model_dir
    m.load_model()
    predict_label, predict_proba = m.predict([
        'Abbott government spends $8 million on higher education media blitz'])
    print(f'predict_label: {predict_label}, predict_proba: {predict_proba}')

    test_data = [
        ('education', 'Abbott government spends $8 million on higher education media blitz'),
        ('sports', 'Middle East and Asia boost investment in top level sports'),
    ]
    acc_score = m.evaluate_model(test_data)
    print(f'acc_score: {acc_score}')

output:

ClassicClassifier instance (LogisticRegression(fit_intercept=False), stopwords size: 2438)
predict_label: ['education'], predict_proba: [0.5378236358492112]
acc_score: 1.0

Chinese Text Classifier(中文文本分类)

Text classification compatible with Chinese and English corpora.

example examples/lr_classification_demo.py

import sys

sys.path.append('..')
from pytextclassifier import ClassicClassifier

if __name__ == '__main__':
    m = ClassicClassifier(output_dir='models/lr-toy', model_name_or_model='lr')
    # 经典分类方法,支持的模型包括:lr, random_forest, decision_tree, knn, bayes, svm, xgboost
    data = [
        ('education', '名师指导托福语法技巧:名词的复数形式'),
        ('education', '**高考成绩海外认可 是“狼来了”吗?'),
        ('education', '公务员考虑越来越吃香,这是怎么回事?'),
        ('sports', '图文:法网孟菲尔斯苦战进16强 孟菲尔斯怒吼'),
        ('sports', '四川丹棱举行全国长距登山挑战赛 近万人参与'),
        ('sports', '米兰客场8战不败国米10年连胜'),
    ]
    m.train(data)
    print(m)
    # load best model from model_dir
    m.load_model()
    predict_label, predict_proba = m.predict(['福建春季公务员考试报名18日截止 2月6日考试',
                                              '意甲首轮补赛交战记录:米兰客场8战不败国米10年连胜'])
    print(f'predict_label: {predict_label}, predict_proba: {predict_proba}')

    test_data = [
        ('education', '福建春季公务员考试报名18日截止 2月6日考试'),
        ('sports', '意甲首轮补赛交战记录:米兰客场8战不败国米10年连胜'),
    ]
    acc_score = m.evaluate_model(test_data)
    print(f'acc_score: {acc_score}')  # 1.0

    #### train model with 1w data
    print('-' * 42)
    m = ClassicClassifier(output_dir='models/lr', model_name_or_model='lr')
    data_file = 'thucnews_train_1w.txt'
    m.train(data_file)
    m.load_model()
    predict_label, predict_proba = m.predict(
        ['顺义北京苏活88平米起精装房在售',
         '美EB-5项目“15日快速移民”将推迟'])
    print(f'predict_label: {predict_label}, predict_proba: {predict_proba}')

output:

ClassicClassifier instance (LogisticRegression(fit_intercept=False), stopwords size: 2438)
predict_label: ['education' 'sports'], predict_proba: [0.5, 0.598941806741534]
acc_score: 1.0
------------------------------------------
predict_label: ['realty' 'education'], predict_proba: [0.7302956923617372, 0.2565005445322923]

Visual Feature Importance

Show feature weights of model, and prediction word weight, for example examples/visual_feature_importance.ipynb

import sys

sys.path.append('..')
from pytextclassifier import ClassicClassifier
import jieba

tc = ClassicClassifier(output_dir='models/lr-toy', model_name_or_model='lr')
data = [
    ('education', '名师指导托福语法技巧:名词的复数形式'),
    ('education', '**高考成绩海外认可 是“狼来了”吗?'),
    ('sports', '图文:法网孟菲尔斯苦战进16强 孟菲尔斯怒吼'),
    ('sports', '四川丹棱举行全国长距登山挑战赛 近万人参与'),
    ('sports', '米兰客场8战不败国米10年连胜')
]
tc.train(data)
import eli5

infer_data = ['高考指导托福语法技巧国际认可',
              '意甲首轮补赛交战记录:米兰客场8战不败国米10年连胜']
eli5.show_weights(tc.model, vec=tc.feature)
seg_infer_data = [' '.join(jieba.lcut(i)) for i in infer_data]
eli5.show_prediction(tc.model, seg_infer_data[0], vec=tc.feature,
                     target_names=['education', 'sports'])

output:

img.png

Deep Classification model

本项目支持以下深度分类模型:FastText、TextCNN、TextRNN、Bert模型,import模型对应的方法来调用:

from pytextclassifier import FastTextClassifier, TextCNNClassifier, TextRNNClassifier, BertClassifier

下面以FastText模型为示例,其他模型的使用方法类似。

FastText 模型

训练和预测FastText模型示例examples/fasttext_classification_demo.py

import sys

sys.path.append('..')
from pytextclassifier import FastTextClassifier, load_data

if __name__ == '__main__':
    m = FastTextClassifier(output_dir='models/fasttext-toy')
    data = [
        ('education', '名师指导托福语法技巧:名词的复数形式'),
        ('education', '**高考成绩海外认可 是“狼来了”吗?'),
        ('education', '公务员考虑越来越吃香,这是怎么回事?'),
        ('sports', '图文:法网孟菲尔斯苦战进16强 孟菲尔斯怒吼'),
        ('sports', '四川丹棱举行全国长距登山挑战赛 近万人参与'),
        ('sports', '米兰客场8战不败保持连胜'),
    ]
    m.train(data, num_epochs=3)
    print(m)
    # load trained best model
    m.load_model()
    predict_label, predict_proba = m.predict(['福建春季公务员考试报名18日截止 2月6日考试',
                                              '意甲首轮补赛交战记录:米兰客场8战不败国米10年连胜'])
    print(f'predict_label: {predict_label}, predict_proba: {predict_proba}')
    test_data = [
        ('education', '福建春季公务员考试报名18日截止 2月6日考试'),
        ('sports', '意甲首轮补赛交战记录:米兰客场8战不败国米10年连胜'),
    ]
    acc_score = m.evaluate_model(test_data)
    print(f'acc_score: {acc_score}')  # 1.0

    #### train model with 1w data
    print('-' * 42)
    data_file = 'thucnews_train_1w.txt'
    m = FastTextClassifier(output_dir='models/fasttext')
    m.train(data_file, names=('labels', 'text'), num_epochs=3)
    # load best trained model from model_dir
    m.load_model()
    predict_label, predict_proba = m.predict(
        ['顺义北京苏活88平米起精装房在售',
         '美EB-5项目“15日快速移民”将推迟']
    )
    print(f'predict_label: {predict_label}, predict_proba: {predict_proba}')
    x, y, df = load_data(data_file)
    test_data = df[:100]
    acc_score = m.evaluate_model(test_data)
    print(f'acc_score: {acc_score}')

BERT 类模型

多分类模型

训练和预测BERT多分类模型,示例examples/bert_classification_zh_demo.py

import sys

sys.path.append('..')
from pytextclassifier import BertClassifier

if __name__ == '__main__':
    m = BertClassifier(output_dir='models/bert-chinese-toy', num_classes=2,
                       model_type='bert', model_name='bert-base-chinese', num_epochs=2)
    # model_type: support 'bert', 'albert', 'roberta', 'xlnet'
    # model_name: support 'bert-base-chinese', 'bert-base-cased', 'bert-base-multilingual-cased' ...
    data = [
        ('education', '名师指导托福语法技巧:名词的复数形式'),
        ('education', '**高考成绩海外认可 是“狼来了”吗?'),
        ('education', '公务员考虑越来越吃香,这是怎么回事?'),
        ('sports', '图文:法网孟菲尔斯苦战进16强 孟菲尔斯怒吼'),
        ('sports', '四川丹棱举行全国长距登山挑战赛 近万人参与'),
        ('sports', '米兰客场8战不败国米10年连胜'),
    ]
    m.train(data)
    print(m)
    # load trained best model from model_dir
    m.load_model()
    predict_label, predict_proba = m.predict(['福建春季公务员考试报名18日截止 2月6日考试',
                                              '意甲首轮补赛交战记录:米兰客场8战不败国米10年连胜'])
    print(f'predict_label: {predict_label}, predict_proba: {predict_proba}')

    test_data = [
        ('education', '福建春季公务员考试报名18日截止 2月6日考试'),
        ('sports', '意甲首轮补赛交战记录:米兰客场8战不败国米10年连胜'),
    ]
    acc_score = m.evaluate_model(test_data)
    print(f'acc_score: {acc_score}')

    # train model with 1w data file and 10 classes
    print('-' * 42)
    m = BertClassifier(output_dir='models/bert-chinese', num_classes=10,
                       model_type='bert', model_name='bert-base-chinese', num_epochs=2,
                       args={"no_cache": True, "lazy_loading": True, "lazy_text_column": 1, "lazy_labels_column": 0, })
    data_file = 'thucnews_train_1w.txt'
    # 如果训练数据超过百万条,建议使用lazy_loading模式,减少内存占用
    m.train(data_file, test_size=0, names=('labels', 'text'))
    m.load_model()
    predict_label, predict_proba = m.predict(
        ['顺义北京苏活88平米起精装房在售',
         '美EB-5项目“15日快速移民”将推迟',
         '恒生AH溢指收平 A股对H股折价1.95%'])
    print(f'predict_label: {predict_label}, predict_proba: {predict_proba}')

PS:如果训练数据超过百万条,建议使用lazy_loading模式,减少内存占用

多标签分类模型

分类可以分为多分类和多标签分类。多分类的标签是排他的,而多标签分类的所有标签是不排他的。

多标签分类比较直观的理解是,一个样本可以同时拥有几个类别标签, 比如一首歌的标签可以是流行、轻快,一部电影的标签可以是动作、喜剧、搞笑等,这都是多标签分类的情况。

训练和预测BERT多标签分类模型,示例examples/bert_multilabel_classification_zh_demo.py.py

import sys
import pandas as pd

sys.path.append('..')
from pytextclassifier import BertClassifier


def load_jd_data(file_path):
    """
    Load jd data from file.
    @param file_path: 
        format: content,其他,互联互通,产品功耗,滑轮提手,声音,APP操控性,呼吸灯,外观,底座,制热范围,遥控器电池,味道,制热效果,衣物烘干,体积大小
    @return: 
    """
    data = []
    with open(file_path, 'r', encoding='utf-8') as f:
        for line in f:
            line = line.strip()
            if line.startswith('#'):
                continue
            if not line:
                continue
            terms = line.split(',')
            if len(terms) != 16:
                continue
            val = [int(i) for i in terms[1:]]
            data.append([terms[0], val])
    return data


if __name__ == '__main__':
    # model_type: support 'bert', 'albert', 'roberta', 'xlnet'
    # model_name: support 'bert-base-chinese', 'bert-base-cased', 'bert-base-multilingual-cased' ...
    m = BertClassifier(output_dir='models/multilabel-bert-zh-model', num_classes=15,
                       model_type='bert', model_name='bert-base-chinese', num_epochs=2, multi_label=True)
    # Train and Evaluation data needs to be in a Pandas Dataframe containing at least two columns, a 'text' and a 'labels' column. The `labels` column should contain multi-hot encoded lists.
    train_data = [
        ["一个小时房间仍然没暖和", [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0]],
        ["耗电情况:这个没有注意", [0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]],
    ]
    data = load_jd_data('multilabel_jd_comments.csv')
    train_data.extend(data)
    print(train_data[:5])
    train_df = pd.DataFrame(train_data, columns=["text", "labels"])

    print(train_df.head())
    m.train(train_df)
    print(m)
    # Evaluate the model
    acc_score = m.evaluate_model(train_df[:20])
    print(f'acc_score: {acc_score}')

    # load trained best model from model_dir
    m.load_model()
    predict_label, predict_proba = m.predict(['一个小时房间仍然没暖和', '耗电情况:这个没有注意'])
    print(f'predict_label: {predict_label}, predict_proba: {predict_proba}')

Evaluation

Dataset

  1. THUCNews中文文本数据集(1.56GB):官方下载地址,抽样了10万条THUCNews中文文本10分类数据集(6MB),地址:examples/thucnews_train_10w.txt
  2. TNEWS今日头条中文新闻(短文本)分类 Short Text Classificaiton for News,该数据集(5.1MB)来自今日头条的新闻版块,共提取了15个类别的新闻,包括旅游,教育,金融,军事等,地址:tnews_public.zip

Evaluation Result

在THUCNews中文文本10分类数据集(6MB)上评估,模型在测试集(test)评测效果如下:

模型 acc 说明
LR 0.8803 逻辑回归Logistics Regression
TextCNN 0.8809 Kim 2014 经典的CNN文本分类
TextRNN_Att 0.9022 BiLSTM+Attention
FastText 0.9177 bow+bigram+trigram, 效果出奇的好
DPCNN 0.9125 深层金字塔CNN
Transformer 0.8991 效果较差
BERT-base 0.9483 bert + fc
ERNIE 0.9461 比bert略差

在中文新闻短文本分类数据集TNEWS上评估,模型在开发集(dev)评测效果如下:

模型 acc 说明
BERT-base 0.5660 本项目实现
BERT-base 0.5609 CLUE Benchmark Leaderboard结果 CLUEbenchmark
  • 以上结果均为分类的准确率(accuracy)结果
  • THUCNews数据集评测结果可以基于examples/thucnews_train_10w.txt数据用examples下的各模型demo复现
  • TNEWS数据集评测结果可以下载TNEWS数据集,运行examples/bert_classification_tnews_demo.py复现

命令行调用

提供分类模型命令行调用脚本,文件树:

pytextclassifier
├── bert_classifier.py
├── fasttext_classifier.py
├── classic_classifier.py
├── textcnn_classifier.py
└── textrnn_classifier.py

每个文件对应一个模型方法,各模型完全独立,可以直接运行,也方便修改,支持通过argparse 修改--data_path等参数。

直接在终端调用fasttext模型训练:

python -m pytextclassifier.fasttext_classifier -h

Text Cluster

Text clustering, for example examples/cluster_demo.py

import sys

sys.path.append('..')
from pytextclassifier.textcluster import TextCluster

if __name__ == '__main__':
    m = TextCluster(output_dir='models/cluster-toy', n_clusters=2)
    print(m)
    data = [
        'Student debt to cost Britain billions within decades',
        'Chinese education for TV experiment',
        'Abbott government spends $8 million on higher education',
        'Middle East and Asia boost investment in top level sports',
        'Summit Series look launches HBO Canada sports doc series: Mudhar'
    ]
    m.train(data)
    m.load_model()
    r = m.predict(['Abbott government spends $8 million on higher education media blitz',
                   'Middle East and Asia boost investment in top level sports'])
    print(r)

    ########### load chinese train data from 1w data file
    from sklearn.feature_extraction.text import TfidfVectorizer

    tcluster = TextCluster(output_dir='models/cluster', feature=TfidfVectorizer(ngram_range=(1, 2)), n_clusters=10)
    data = tcluster.load_file_data('thucnews_train_1w.txt', sep='\t', use_col=1)
    feature, labels = tcluster.train(data[:5000])
    tcluster.show_clusters(feature, labels, 'models/cluster/cluster_train_seg_samples.png')
    r = tcluster.predict(data[:30])
    print(r)

output:

TextCluster instance (MiniBatchKMeans(n_clusters=2, n_init=10), <pytextclassifier.utils.tokenizer.Tokenizer object at 0x7f80bd4682b0>, TfidfVectorizer(ngram_range=(1, 2)))
[1 1 1 1 1 1 1 1 1 1 1 8 1 1 1 1 1 1 1 1 1 1 9 1 1 8 1 1 9 1]

clustering plot image:

cluster_image

Contact

  • Issue(建议):GitHub issues
  • 邮件我:xuming: [email protected]
  • 微信我:加我微信号:xuming624, 进Python-NLP交流群,备注:姓名-公司名-NLP

Citation

如果你在研究中使用了pytextclassifier,请按如下格式引用:

APA:

Xu, M. Pytextclassifier: Text classifier toolkit for NLP (Version 1.2.0) [Computer software]. https://github.com/shibing624/pytextclassifier

BibTeX:

@misc{Pytextclassifier,
  title={Pytextclassifier: Text classifier toolkit for NLP},
  author={Xu Ming},
  year={2022},
  howpublished={\url{https://github.com/shibing624/pytextclassifier}},
}

License

授权协议为 The Apache License 2.0,可免费用做商业用途。请在产品说明中附加pytextclassifier的链接和授权协议。

Contribute

项目代码还很粗糙,如果大家对代码有所改进,欢迎提交回本项目,在提交之前,注意以下两点:

  • tests添加相应的单元测试
  • 使用python setup.py test来运行所有单元测试,确保所有单测都是通过的

之后即可提交PR。

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pytextclassifier's Issues

svm遇到问题

你好,我在使用svm模型的时候遇到了无法解决的问题,报错入下。
AttributeError: predict_proba is not available when probability=False
image
请问如何解决

使用用例更换模型名称报错

大佬您好!我将中文文本分类的示例的模型名称改为了textrnn_att,但是却报错找不到文件。请问需要怎么调用模型?
Uploading image.png…

bert 分类报错

bert 中文分类时 ,No module named 'simpletransformers'
fasttext 中文分类时,准确率不高,

分隔符问题

你好 models/reader.py里data_reader函数为什么要用逗号来分割 我理解的不该是‘\t’吗

infer.py

请问多分类时,infer.py应该怎样修改才能看到分类器的分类结果

减小inference时候的list size

Hello,
感谢提供很好的工具

想请教一下在使用的时候,例如fasttext的模型,在使用model.predict的时候是传入一个list,如果list过大,遇到了报错的情况。

我们是否有一个参数可以设计batch来做推理?

使用用例与代码不一致

你好,描述的模型调用示例和代码实际不一致,在pytextclassifier的textclassifier模型初始化中需要传入初始模型,而使用示例中描述的是传入model name即可,请问这是尚未完成的项目吗

load_model

请教一下,load_model 加载的是output_dir路径,应该是最后一个epoch的模型吧?

load trained best model from model_dir

模型epoch保存数量限制

在使用bert分类器的时候,每个epoch都会保存模型,对于较大的模型例如roberta-large来说,这样的保存显得浪费,是否有一个机制是只保存best model或者可以选择只保存best model + 最新的N个model ?

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