Data Classification Description R adabag package supports bagging and boosting, of which Bootstrap aggregating's Adabag package provides Breiman Bootstrap aggregating. The concept of sub-multi-version classifier is first proposed in Breiman bagging, and an aggregate classifier is obtained.
operating data classification Import and Install Algorithm Package
library(rpart) library(adabag) Call bagging function to complete the training of data set (different results may be produced in the training process)
set.seed(2) churn.bagging = bagging(churn ~ .
File management of virtual machines is performed by VMware workstation. A virtual machine is generally stored in the host in the form of a series of files, which are generally in the directory created by Workstation for virtual machines.The extensions of these key files are listed here.In these examples, < vmname > represents your virtual machine name..log < vmname >. log or VMware. log this file records the adjustment and operation of VMware Workstation to virtual machines.
virtual storage this is not finished, continue:
1. Write mode of hard disk image file: There are 6 write modes of virtual hard disk image file:
1) Normal mode, default mode.There are no restrictions on how virtual machines can read and write virtual hard disk image files.
2) writethroughharddisks mode.Compared with the normal mode, in this mode, when a snapshot is taken for a virtual machine, the state information is not saved in the snapshot.
Introduction to ZooKeeper I didn't know there was such a thing before I went to work. Before I started to talk about fake death and brain crack, let's talk about Zookeeper.
ZookeeperZookeeper is a coordination service for distributed applications.It is a software that provides consistent services for distributed applications. Its performance includes configuration maintenance, name service, distributed synchronization, group service, etc.Zookeeper is based on Fast paxos (computer science), and Paxos (computer science) has livelock's problem, that is, when multiple proposers are submitted in a staggered way, they may mutually exclude each other, resulting in no proposer being submitted successfully.
downtime.js /*! * jQuery downtime plugin * version 0.2 * Author: Rob Griffiths <[email protected]> http://github.com/bytespider/downtime * Licence: MIT license */ /* * Copyright (c) 2012 Rob Griffiths * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify,
In the latest project, we need to use SMS Verification Code to send short messages. After searching the Internet for half a day, we couldn't find a satisfactory one, so we wrote one ourselves. jquery's packaged countdown plug-in for sending mobile phone verification codes uses cookie to prevent page refresh. 实现思路： 1.实现点击按钮，对手机号进行
pip can easily install, uninstall and manage Python packages. virtualenv can establish multiple independent virtual environments, each with its own python interpreter and its own package package, which do not affect each other. pip and virtualenv can work together well, and it is very convenient to use both tools at the same time.pip is usually installed first. After installation, pip install virtualenvcan automatically download and install virtualenv from the internet.