bayesian network implementation python

Reply content: 1. Epsilon = 0.0001 What is the purpose of this code? In Minimize (Jtheta) and cost function formulas, none of them saw a epsilon logo In fact, in the bottom 5th, 6 line: ifabs(error1-error0)epsilon: breakEpsilon is the convergence condition. THETA012 is the optimal (and let me say) fitting the various coefficients of the curve polynomial, but the egg, because you this data is self-imagined, the result is not very valuable I also have a gradient down the realization

in this paper, a Python implementation decision tree algorithm is described. Share to everyone for your reference, as follows: From sklearn.feature_extraction import dictvectorizerimport csvfrom sklearn import treefrom sklearn Import Preprocessingfrom sklearn.externals.six Import stringio# reads the CSV data and stores the data and eigenvalues in the Dictionary and class label list allelectronicsdata = op

Python implementation based on co-discovery of the relationship between charactersReference Links:To extract the "Busan line" character Relations,Draw a beautiful network Diagram with Python's networkx1. Co-existing relationshipIn the literature metrology, the common word method of keywords is used to determine the relationship between the subjects in the subject

#!/usr/bin/envpython#coding=utf-8 "python use Youdao Dictionary API to implement command line look up the word" "Importurllib2import jsonimportsysreload (SYS) sys.setdefaultencoding (' utf-8 ') key= ' 1096888977 ' Keyfrom = ' bloketest ' doctype= ' json ' u= ' http://fanyi.youdao.com/openapi.do ' class req:def__init__ (self): self.key=key self.keyfrom= keyfrom Self.doctype=doctypedefdict (self,words ): url= '%s?keyfrom=%skey=%stype=datadoctype=%svers

Recently picked up before using Python + Selenium to implement work required to sign in to Office 365 features. (Spit Groove: The domestic network is really a card, logging into Office 365 is not easy.) In addition selenium such a site to the wall, can not understand, is said to be using Google's ip,whatever ... ）Try to study the relationship between selenium and Webdriver, read the official introduction, f

This procedure is actually very early completed, has not been issued, while the recent is not very busy to share to everyone. Using the BeautifulSoup module and the Urllib2 module, and then saved to Word is using the Python docx module, installation method on the Internet a lot of search, I will not repeat. The main implementation of the function is to login to know, and then the personal collection of que

specified certificate file parametergunicorn-w4-b0.0.0.0:8000--certfile=server.pem--keyfile=server.key myapp:app[2017-08-22 10:47:34 +0800] [23118] [ Info] Starting Gunicorn 19.7.1[2017-08-22 10:47:34 +0800] [23118] [INFO] Listening at:https://0.0.0.0:8000 (23118) [2017- 08-22 10:47:34 +0800] [23118] [INFO] Using worker:sync[2017-08-22 10:47:34 +0800] [23121] [INFO] booting worker with PID:23121[2017-08-22 10:47:34 +0800] [23122] [info] booting worker with pid:23122[2017-08-22 10:47:34 +0800] [

co-processis a way to implement multitasking in python, and compared to multitasking processes and threads, the coprocessor does not need to consume too much resources and utilize CPU resources more efficiently.Multi-tasking with gevent encapsulated generator iterator functionality in Python. In the process of running a program, it relies on the time-consuming operation of programs to achieve program interr

=socket.gethostname () client_addr= (host,5963)#equals server_addr ()#listen to other members of the conversationdefListening (CS): Inputs=[CS] whiletrue:rlist,wlist,elist=Select.select (inputs, [], [])#The client socket is used to send and receive data, because there is only this waitable object, so there is no need to iterate ifCsinchrlist:Try: #print data received from the server PrintCS.RECV (1024) exceptSocket.error:Print "Socket is error"exit

1 #udp_gb_server.py2 " "Server side (UDP protocol LAN broadcast)" "3 4 ImportSocket5 6s =Socket.socket (socket.af_inet, socket. SOCK_DGRAM)7S.setsockopt (socket. Sol_socket, SOCKET. So_broadcast, 1)8 9PORT = 1060Ten OneNetwork ='' AS.sendto ('Client Broadcast message!'. Encode ('Utf-8'), (Network, PORT))#udp_gb_client.py" "client (UDP protocol LAN broadcast)" "ImportSockets=Socket.socket (socket.af_inet, socket. SOCK_DGRAM) s.setsockopt (socket. Sol_

0x00Prior to acceptance of the WAF module Webshell effects, network pc--waf--webserver, collect Webshell samples on the web for upload testing. Due to the large number of 8000+ of samples,Had to write a tool for acceptance.Webshellhttps://github.com/tennc/webshell.git0x01Client implementationUsing Python Requests_toolbelt library into the file upload, there is a pit, can not use the requests library, reques

optimal solutions may be found. Therefore, in logistic regression, the loss function defined below is generally used. We assume that the probability of y=1 is that, because it's a two classification problem, the probability of y=0 is that we'll take the logarithm and multiply it by Y, and then add up all the samples:We hope that the logistic regression learning gets the parameter, can make the characteristic of the positive example far more than 0, the negative case characteristic is far less t

This program is actually completed very early, has not been issued, while not very busy recently to share.Using the BeautifulSoup module and the Urllib2 module, and then saving it as word is using the Python docx module, the installation method on the Internet a lot, I will not repeat. The main implementation of the function is to log in, then save the questions and answers for your personal favorites to a

Always have love to watch the habit of watching the United States, on the one hand to exercise English listening, to pass the time. Before the video site can be seen on the online, but since the SARFT restrictions, the import of the United States drama, such as the British drama does not seem to be the same as before synchronized update. However, as a house Diao I do not have a play after it, so casually check on the Internet to find a can use the Thunder download the American play download site