Python使用gensim计算文档相似性
pre_file.py
#-*-coding:utf-8-*-
import MySQLdb
import MySQLdb as mdb
import os,sys,string
import jieba
import codecs
reload(sys)
sys.setdefaultencoding('utf-8')
#连接数据库
try:
conn=mdb.connect(host='127.0.0.1',user='root',passwd='kongjunli',db='test1',charset='utf8')
except Exception,e:
print e
sys.exit()
#获取cursor对象操作数据库
cursor=conn.cursor(mdb.cursors.DictCursor) #cursor游标
#获取内容
sql='SELECT link,content FROM test1.spider;'
cursor.execute(sql) #execute()方法，将字符串当命令执行
data=cursor.fetchall()#fetchall()接收全部返回结果行
f=codecs.open('C:\Users\kk\Desktop\hello-result1.txt','w','utf-8')
for row in data: #row接收结果行的每行数据
seg='/'.join(list(jieba.cut(row['content'],cut_all='False')))
f.write(row['link']+' '+seg+'\r\n')
f.close()
cursor.close()
#提交事务，在插入数据时必须
jiansuo.py
#-*-coding:utf-8-*-
import sys
import string
import MySQLdb
import MySQLdb as mdb
import gensim
from gensim import corpora,models,similarities
from gensim.similarities import MatrixSimilarity
import logging
import codecs
reload(sys)
sys.setdefaultencoding('utf-8')
con=mdb.connect(host='127.0.0.1',user='root',passwd='kongjunli',db='test1',charset='utf8')
with con:
cur=con.cursor()
cur.execute('SELECT * FROM cutresult_copy')
rows=cur.fetchall()
class MyCorpus(object):
def __iter__(self):
for row in rows:
yield str(row[1]).split('/')
#开启日志
logging.basicConfig(format='%(asctime)s:%(levelname)s:%(message)s',level=logging.INFO)
Corp=MyCorpus()
#将网页文档转化为tf-idf
dictionary=corpora.Dictionary(Corp)
corpus=[dictionary.doc2bow(text) for text in Corp] #将文档转化为词袋模型
#print corpus
tfidf=models.TfidfModel(corpus)#使用tf-idf模型得出文档的tf-idf模型
corpus_tfidf=tfidf[corpus]#计算得出tf-idf值
#for doc in corpus_tfidf:
#print doc
###
'''
q_file=open('C:\Users\kk\Desktop\q.txt','r')
query=q_file.readline()
q_file.close()
vec_bow=dictionary.doc2bow(query.split(' '))#将请求转化为词带模型
vec_tfidf=tfidf[vec_bow]#计算出请求的tf-idf值
#for t in vec_tfidf:
# print t
'''
###
query=raw_input('Enter your query:')
vec_bow=dictionary.doc2bow(query.split())
vec_tfidf=tfidf[vec_bow]
index=similarities.MatrixSimilarity(corpus_tfidf)
sims=index[vec_tfidf]
similarity=list(sims)
print sorted(similarity,reverse=True)
encodings.xml
<?xml version="1.0" encoding="UTF-8"?> <project version="4"> <component name="Encoding"> <file url="PROJECT" charset="UTF-8" /> </component> </project>
misc.xml
<?xml version="1.0" encoding="UTF-8"?> <project version="4"> <component name="ProjectLevelVcsManager" settingsEditedManually="false"> <OptionsSetting value="true" id="Add" /> <OptionsSetting value="true" id="Remove" /> <OptionsSetting value="true" id="Checkout" /> <OptionsSetting value="true" id="Update" /> <OptionsSetting value="true" id="Status" /> <OptionsSetting value="true" id="Edit" /> <ConfirmationsSetting value="0" id="Add" /> <ConfirmationsSetting value="0" id="Remove" /> </component> <component name="ProjectRootManager" version="2" project-jdk-name="Python 2.7.11 (C:\Python27\python.exe)" project-jdk-type="Python SDK" /> </project>
modules.xml
<?xml version="1.0" encoding="UTF-8"?> <project version="4"> <component name="ProjectModuleManager"> <modules> <module fileurl="file://$PROJECT_DIR$/.idea/爬虫练习代码.iml" filepath="$PROJECT_DIR$/.idea/爬虫练习代码.iml" /> </modules> </component> </project>
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1671
14
1428
52
1329
25
1276
29
1256
24
PHP and Python: Different Paradigms Explained
Apr 18, 2025 am 12:26 AM
PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.
Choosing Between PHP and Python: A Guide
Apr 18, 2025 am 12:24 AM
PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.
How to run sublime code python
Apr 16, 2025 am 08:48 AM
To run Python code in Sublime Text, you need to install the Python plug-in first, then create a .py file and write the code, and finally press Ctrl B to run the code, and the output will be displayed in the console.
PHP and Python: A Deep Dive into Their History
Apr 18, 2025 am 12:25 AM
PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.
Python vs. JavaScript: The Learning Curve and Ease of Use
Apr 16, 2025 am 12:12 AM
Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.
Golang vs. Python: Performance and Scalability
Apr 19, 2025 am 12:18 AM
Golang is better than Python in terms of performance and scalability. 1) Golang's compilation-type characteristics and efficient concurrency model make it perform well in high concurrency scenarios. 2) Python, as an interpreted language, executes slowly, but can optimize performance through tools such as Cython.
Where to write code in vscode
Apr 15, 2025 pm 09:54 PM
Writing code in Visual Studio Code (VSCode) is simple and easy to use. Just install VSCode, create a project, select a language, create a file, write code, save and run it. The advantages of VSCode include cross-platform, free and open source, powerful features, rich extensions, and lightweight and fast.
How to run python with notepad
Apr 16, 2025 pm 07:33 PM
Running Python code in Notepad requires the Python executable and NppExec plug-in to be installed. After installing Python and adding PATH to it, configure the command "python" and the parameter "{CURRENT_DIRECTORY}{FILE_NAME}" in the NppExec plug-in to run Python code in Notepad through the shortcut key "F6".
