def preprocess():
if filter_df0.shape[0] == 0:
messagebox.showinfo('Message', '未选择新闻数据！')
return
df = filter_df0.copy()
df['title_'] = df['title'].map(
lambda x: preprocessing.clean_title_blank(x))
df['content_'] = df['content'].map(
lambda x: preprocessing.clean_content(x))
df['content_'] = df['content_'].map(
lambda x: preprocessing.get_num_en_ch(x))
df['content_cut'] = df['content_'].map(lambda x: preprocessing.pseg_cut(
x, userdict_path=os.path.join(extra_dict_path, 'self_userdict.txt')))
df['content_cut'] = df['content_cut'].map(
lambda x: preprocessing.get_words_by_flags(
x, flags=['n.*', 'v.*', 'eng', 't', 's', 'j', 'l', 'i']))
df['content_cut'] = df['content_cut'].map(
lambda x: preprocessing.stop_words_cut(
x, os.path.join(extra_dict_path, 'self_stop_words.txt')))
df['content_cut'] = df['content_cut'].map(
lambda x: preprocessing.disambiguation_cut(
x, os.path.join(extra_dict_path, 'self_disambiguation_dict.json')))
df['content_cut'] = df['content_cut'].map(
lambda x: preprocessing.individual_character_cut(
x,
os.path.join(extra_dict_path, 'self_individual_character_dict.txt')
))
df['content_'] = df['content_cut'].map(lambda x: ' '.join(x))
news_pandas.save_news(df, os.path.join(temp_news_path, 'news_cut.csv'))
messagebox.showinfo('Message', '数据预处理完成！')
def content_preprocess(df_content):
"""新闻内容分词处理"""
df_content['content_'] = df_content['content'].map(
lambda x: preprocessing.clean_content(x))
df_content['content_'] = df_content['content_'].map(
lambda x: preprocessing.get_num_en_ch(x))
df_content['content_cut'] = df_content['content_'].map(
lambda x: preprocessing.pseg_cut(
x,
userdict_path=os.path.join(extra_dict_path, 'self_userdict.txt')))
df_content['content_cut'] = df_content['content_cut'].map(
lambda x: preprocessing.get_words_by_flags(
x, flags=['n.*', '.*n', 'v.*', 's', 'j', 'l', 'i', 'eng']))
df_content['content_cut'] = df_content['content_cut'].map(
lambda x: preprocessing.stop_words_cut(
x, os.path.join(extra_dict_path, 'HIT_stop_words.txt')))
df_content['content_cut'] = df_content['content_cut'].map(
lambda x: preprocessing.stop_words_cut(
x, os.path.join(extra_dict_path, 'self_stop_words.txt')))
df_content['content_cut'] = df_content['content_cut'].map(
lambda x: preprocessing.disambiguation_cut(
x, os.path.join(extra_dict_path, 'self_disambiguation_dict.json')))
df_content['content_cut'] = df_content['content_cut'].map(
lambda x: preprocessing.individual_character_cut(
x,
os.path.join(extra_dict_path, 'self_individual_character_dict.txt')
))
df_content['content_'] = df_content['content_cut'].map(
lambda x: ' '.join(x))
return df_content
def f(text):
text = preprocessing.clean_content(text)
text = modeling.get_key_sentences(text, num=1)
return text
# -*- coding: utf-8 -*-
import os
import pandas as pd
from datetime import datetime
from utils import news_crawler
from utils import preprocessing
project_path = os.path.dirname(os.path.realpath(__file__)) # 获取项目路径
news_path = os.path.join(project_path, 'news') # 新闻数据存放目录路径
if not os.path.exists(news_path): # 创建news文件夹
os.mkdir(news_path)
sina_news_df = news_crawler.get_latest_news('sina', top=60, show_content=True)
sohu_news_df = news_crawler.get_latest_news('sohu', top=10, show_content=True)
xinhuanet_news_df = news_crawler.get_latest_news('xinhuanet', top=10, show_content=True)
news_crawler.save_news(sina_news_df, os.path.join(news_path, 'sina_latest_news.csv'))
news_crawler.save_news(sohu_news_df, os.path.join(news_path, 'sohu_latest_news.csv'))
news_crawler.save_news(xinhuanet_news_df, os.path.join(news_path, 'xinhuanet_latest_news.csv'))
news_df = pd.concat([sina_news_df, sohu_news_df, xinhuanet_news_df], ignore_index=True)
news_df = preprocessing.data_filter(news_df)
# last_time = datetime.today().strftime('%Y-%m-%d %H:%M') # format like '2018-04-06 23:59'
# news_df = preprocessing.get_data(news_df, last_time=last_time, delta=5)
news_df['content'] = news_df['content'].map(lambda x: preprocessing.clean_content(x))
news_crawler.save_news(news_df, os.path.join(news_path, 'latest_news.csv'))