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Cleaning
[Getting and
Cleaning
data] Quiz 4
Question1Question2Question3Question4Question5Moredetailscanbefoundinthehtmlfilehere.Question1TheAmericanCommunitySurveydistributesdownloadabledataaboutUnitedStatescommunities.Downloadthe2006microdatas
艳艳儿
·
2016-03-17 23:36
statistics
R
coursera
data
science
[Getting and
Cleaning
data] Quiz 3
Question1Question2Question3Question4Question5Moredetailscanbefoundinthehtmlfilehere.Question1TheAmericanCommunitySurveydistributesdownloadabledataaboutUnitedStatescommunities.Downloadthe2006microdatas
艳艳儿
·
2016-03-17 23:17
statistics
R
coursera
data
science
[Getting and
Cleaning
data] Quiz 3
Question1Question2Question3Question4Question5Moredetailscanbefoundinthehtmlfilehere.Question1TheAmericanCommunitySurveydistributesdownloadabledataaboutUnitedStatescommunities.Downloadthe2006microdatas
艳艳儿
·
2016-03-17 23:17
statistics
R
coursera
data
science
[Getting and
Cleaning
data] Week 4
Week4EditingtextvariablesRegularexpressionsWorkingwithdatesMoredetailscouldbefoundinthehtmlfilehereWeek4EditingtextvariablesImportantpointsabouttextindatasetNamesofvariablesshouldbeAlllowercaseswhenpo
艳艳儿
·
2016-03-17 09:19
statistics
R
coursera
data
science
HOJ 2226&POJ2688
Cleaning
Robot(BFS+TSP(状态压缩DP))
CleaningRobotTimeLimit:1000MSMemoryLimit:65536KTotalSubmissions:4264Accepted:1713DescriptionHere,wewanttosolvepathplanningforamobilerobotcleaningarectangularroomfloorwithfurniture.Considertheroomfloor
Dacc123
·
2016-03-16 16:00
[Getting and
Cleaning
data] Week 3
Week3SubsettingandSortingSummarizingdataCreatingnewvariablesReshapingdataManagingdataframewithdplyrpackageIntroductionManagingdataframeswithdplyrpackageBasictoolsMergingdataFormoredetails,seethehtmlfi
艳艳儿
·
2016-03-15 03:25
statistics
R
coursera
data
science
[Getting and
Cleaning
data] Week 3
Week3SubsettingandSortingSummarizingdataCreatingnewvariablesReshapingdataManagingdataframewithdplyrpackageIntroductionManagingdataframeswithdplyrpackageBasictoolsMergingdataFormoredetails,seethehtmlfi
艳艳儿
·
2016-03-15 03:25
statistics
R
coursera
data
science
[Getting and
Cleaning
data] Quiz 2
Question1Question2Question3Question4Question5Formoredetail,seethehtmlfilehere.Question1RegisteranapplicationwiththeGithubAPIheregithubapplication.AccesstheAPItogetinformationonyourinstructorsrepositor
艳艳儿
·
2016-03-14 11:43
R
statistics
R
coursera
data
science
[Getting and
Cleaning
data] Week 2
Week2ReadingdatafromMySQLReadingdatafromHDF5ReadingdatafromwebsiteReadingdatafromAPIFormoredetail,downthehtmlfilehere.Week2ReadingdatafromMySQLWhatisMySQL?SQLisshortforStructuredQueryLanguageandMySQLi
艳艳儿
·
2016-03-14 11:47
statistics
R
coursera
data
science
[Getting and
Cleaning
data] Week 2
Week2ReadingdatafromMySQLReadingdatafromHDF5ReadingdatafromwebsiteReadingdatafromAPIFormoredetail,downthehtmlfilehere.Week2ReadingdatafromMySQLWhatisMySQL?SQLisshortforStructuredQueryLanguageandMySQLi
艳艳儿
·
2016-03-14 11:47
statistics
R
coursera
data
science
[Getting and
Cleaning
data] Quiz 1
Quiz1Question1QUestion2Question3Question4Question5Formoredetail,youcandownloadthehtmlfilehere.Quiz1Question1TheAmericanCommunitySurveydistributesdownloadabledataaboutUnitedStatescommunities.Downloadth
艳艳儿
·
2016-03-14 01:51
statistics
R
coursera
data
science
[Getting and
Cleaning
data] Week 1
Week1RawDataVSProcessedDataRawDataVSTidyDataDownloadfilesReadingflatlocalfileReadingExcelfilesReadingXMLfileReadingJSONUsingdatatableFormoredetail,youcandownloadthehtmlfileherefreeWeek1Thiscourseisfol
艳艳儿
·
2016-03-13 23:40
statistics
R
coursera
data
science
关于windows x64安装MySQL-python失败解决
Cannot include : : No s uch directory error: command l.exe----------------------------------------
Cleaning
sunday208
·
2016-03-01 17:38
POJ 2376
Cleaning
Shifts
题意给一个1..T的区间,然后N个子区间,取最少的把这个区间填满,求这个最小值算法以区间开始为关键字升序排序,如果左边不能覆盖,那肯定就不行。这样就选好了最开始的一块。那当然是选所以1开头的右边区间最大的一块。第二块就是在这1..y+1中再找个右边最大的一块,然后不断更新。如果找不到,那就不能填满,当全部找完以后,再判断能不能填满代码#include #include #include using
YYecust
·
2016-02-28 14:00
bzoj1584【Usaco2009 Mar】
Cleaning
Up 打扫卫生
1584:[Usaco2009Mar]CleaningUp打扫卫生TimeLimit: 10Sec MemoryLimit: 64MBSubmit: 390 Solved: 265[Submit][Status][Discuss]Description有N头奶牛,每头那牛都有一个标号Pi,1j的序列,也就是不满足条件的序列,适当地调整左端点pos[j],使其满足cnt[j]≤j。其中对于左端点
AaronGZK
·
2016-02-27 20:00
dp
bzoj
bzoj1584【Usaco2009 Mar】
Cleaning
Up 打扫卫生
1584:[Usaco2009Mar]CleaningUp打扫卫生TimeLimit: 10Sec MemoryLimit: 64MBSubmit: 390 Solved: 265[Submit][Status][Discuss]Description有N头奶牛,每头那牛都有一个标号Pi,1j的序列,也就是不满足条件的序列,适当地调整左端点pos[j],使其满足cnt[j]≤j。其中对于左端点
AaronGZK
·
2016-02-27 20:00
dp
bzoj
POJ 2376
Cleaning
Shifts (贪心区间最少覆盖)
CleaningShiftsTimeLimit:1000MS MemoryLimit:65536KTotalSubmissions:15489 Accepted:3951DescriptionFarmerJohnisassigningsomeofhisN(1 #include #include #include #include #include #include #include #includ
helloiamclh
·
2016-02-27 18:00
POJ 2376
Cleaning
Shift
POJ2376题目大意如下:有N头牛要在指定的T时间以内工作,但是每头牛的工作时间区间给定了,同时在1~T这T个小时里面,每个小时都至少得有一头牛在工作,如果这种情况不恒成立,那么输出“-1”说明没有解决方案,否则,给出最佳解决方案:使用最少牛的头数观察到问题的规模并不大,所以可以用暴力搜索来做,但是要注意的一点是:在对这N头牛按照它们的工作时段来排序之后(我的排序是按照先排下限,在下限相等时候再
kornberg_fresnel
·
2016-02-26 20:00
ACM
poj
ICPC
暴力
数据建模那点事儿
第一部分:数据建模理论和逻辑一、从数据分析的定义开始维基百科对数据分析的定义如下:Analysisofdata isaprocessofinspecting,
cleaning
,transforming,
xrzs
·
2016-02-05 23:00
Cleaning
Shifts(POJ 2376 贪心)
CleaningShiftsTimeLimit: 1000MS MemoryLimit: 65536KTotalSubmissions: 15143 Accepted: 3875DescriptionFarmerJohnisassigningsomeofhisN(1 2#include 3#include 4#include 5usingnamespacestd; 6structnode
御心飞行
·
2016-01-27 22:00
数据清洗(Data
Cleaning
)
数据清洗数据清洗(DataCleaning)目录[隐藏]1什么是数据清洗[1]2数据清洗原理[2]3数据清洗的实现方式与范围[2]4数据清洗的方法[3]5相关条目6参考文献[编辑]什么是数据清洗[1]数据清洗是指发现并纠正数据文件中可识别的错误的最后一道程序,包括检查数据一致性,处理无效值和缺失值等。与问卷审核不同,录入后的数据清理一般是由计算机而不是人工完成。1.一致性检查一致性检查(consi
lionzl
·
2016-01-15 15:25
大数据和数据挖掘
POJ 2376
Cleaning
Shifts(贪心,区间问题)
CleaningShiftsTimeLimit: 1000MSMemoryLimit: 65536KTotalSubmissions: 14878Accepted: 3804DescriptionFarmerJohnisassigningsomeofhisN(1 #include #include usingnamespacestd; structnode { intstart,end; }a[2
zwj1452267376
·
2015-12-28 18:00
POJ 2376
Cleaning
Shifts
FarmerJohnisassigningsomeofhisN(1T。用一个flag来记录每一个小区间的最大值。不要忘记如果最开始不是1就是输出-1不要犹豫以下是我的代码#include #include #include #include #include #include #include usingnamespacestd; structsa{ intx,y;}a[25010]; intcm
qq_27599517
·
2015-11-29 20:00
【FZU】2208
cleaning
again【模数质因数以3为众数的三进制NTT】
传送门:【FZU】2208cleaningagain简要题意:在长度为N的环上,选出K个点,同时需要满足这K个点两两之间的距离不等于D的方案数,方案数对258280327(2∗317+1)取模。1≤N,D,K≤105题目分析:首先我们知道如果将所有间隔为D的人建边,我们可以得到g=gcd(N,D)个由N/g个元素构成的环,而且环与环之间是互不影响的,这是一个很好的性质。这样问题变成了在第i环上选出
u013368721
·
2015-11-16 19:00
mysql_【MySQL】常见的mysql 进程state
cleaning
up 线程处理一个命令,并正准备以释放内存和重置某些状态变量。 closing tables
·
2015-11-13 16:46
mysql
【BZOJ】3389: [Usaco2004 Dec]
Cleaning
Shifts安排值班(贪心)
http://www.lydsy.com/JudgeOnline/problem.php?id=3389 显然左端点排序后,依次取。 要考虑下一次取的方案: 待选点为a[j].x<=a[now].y+1的所有点j,其中now是当前所选 那么我们要在这些点内做决策 贪心就是取y最大的待选点,即 max(a[j].y)的j 实现中细节太多QAQ,写了挺久的。。 #include
·
2015-11-13 11:15
USACO
9月刷题总结
贪心(这个要放在首位,思想太重要): 【BZOJ】3016: [Usaco2012 Nov]Clumsy Cows(贪心) 【BZOJ】3389: [Usaco2004 Dec]
Cleaning
·
2015-11-13 11:50
总结
【BZOJ】1672: [Usaco2005 Dec]
Cleaning
Shifts 清理牛棚(dp/线段树)
http://www.lydsy.com/JudgeOnline/problem.php?id=1672 dp很好想,但是是n^2的。。但是可以水过。。(5s啊。。) 按左端点排序后 f[i]表示取第i个的最小费用 f[i]=min(f[j])+w[i] 当j的结束时间>=i的开始时间-1 答案就是所有的i满足i的结束时间>=结束时间-1 #include <cst
·
2015-11-13 11:29
USACO
poj 2688
Cleaning
Robot
分析:状态压缩的BFS或者dfs状态+最短路。 前者就是类似于拯救大兵瑞恩的方法,后者非常经典,dfs全排列枚举然后根据最短路相加。 WA三次+TLE一次+AC。 代码: const nx:array[1..4] of integer=(0,0,1,-1); ny:array[1..4] of integer=(1,-1,0,0); type ji=record
·
2015-11-13 09:57
robot
grunt serve Warning: Running "sass:server" (sass) task
ydkt$ grunt serve Running "serve" task Running "clean:server" (clean) task
Cleaning
·
2015-11-13 08:26
server
windows下一段构建OpenGL程序的基础代码
/* * This Code Was Created By Jeff Molofee 2000 * A HUGE Thanks To Fredric Echols For
Cleaning
·
2015-11-13 01:10
windows
BZOJ 3389: [Usaco2004 Dec]
Cleaning
Shifts安排值班
题目 3389: [Usaco2004 Dec]
Cleaning
Shifts安排值班 Time Limit: 1 Sec Memory Limit: 128
·
2015-11-13 01:22
USACO
BZOJ 1672: [Usaco2005 Dec]
Cleaning
Shifts 清理牛棚
题目 1672: [Usaco2005 Dec]
Cleaning
Shifts 清理牛棚 Time Limit: 5 Sec Memory Limit: 64
·
2015-11-13 01:20
USACO
[POJ2376
Cleaning
Shifts]
[关键字]:贪心 [题目大意]:给出一给大区间和n各小区间,问最少可以用多少小区间覆盖整个大区间。 //========================================================================= [分析]:贪心法来求。设t为当前所有已确定区间的最右端,那我们可以每次都取所有可选的小区间(左端点<=t+1)中右端点最大的值,然后更新
·
2015-11-13 00:06
poj
阻击恶意软件 — 清除和保护你的网站的小技巧 ZT
转载自 谷歌中文网站管理员博客 译自: StopBadware.org: Tips for
cleaning
& Securing Your Website 译者按: StopBadware.org
·
2015-11-12 16:24
小技巧
POJ 2688
Cleaning
Robot(BFS + A* + 状态压缩DP)
题意: 给你一个N * M(1 ≤ N, M ≤ 20)的地图,'.'表示空位,'*'表示垃圾,'o'表示机器人的初始位置,'x'表示墙。请你计算机器人清理完所有的垃圾至少要走多少步。 机器人一旦走到垃圾上,垃圾就被清掉了。输入数据保证垃圾不多于10个。 思路: 1. 先 BFS 求出任意两个污点间所需要的最小步数。题目保证了污点数不超过 10 个,这时候可以应用经典的 TSP 模型,用状
·
2015-11-12 13:28
robot
ACM学习历程——POJ 2376
Cleaning
Shifts(贪心)
Description Farmer John is assigning some of his N (1 <= N <= 25,000) cows to do some
cleaning
·
2015-11-12 11:05
ACM
C# WebCam User Control Source
After a little bit of
cleaning
up, I'm posting it now for you to take a look at. Here are some thing
·
2015-11-12 09:16
source
[POJ 2376]
Cleaning
Shifts
Cleaning
Shifts Time Limit: 1000MS Memory Limit: 65536K Total Submissions:
·
2015-11-11 19:44
poj
VMWARE 重新安装出错
Cleaning
up after an incomplete uninstallation on a Windows host Solution This article describes the
·
2015-11-08 15:18
vmware
Moses创建一个翻译系统的基本过程记录,以后会按照每个过程详细说明,并给出每个步骤的参数说明
traning-model.perl的时候会用到)、IRSTLM产生语言模型 大致步骤: 大体的步骤如下: 准备Parallerl data(需要句子对齐):对语料进行tokenisation、truecasing和
cleaning
·
2015-11-08 11:14
OS
初学SSIS要明白的几个概念
ETL是数据抽取(Extract)、清洗(
Cleaning
)、转换(Transform)、装载(Load
·
2015-11-07 12:24
SSI
poj 2376
Cleaning
Shifts
id=2376
Cleaning
Shifts Time Limit: 1000MS Memory Limit: 65536K Total Submissions
·
2015-11-07 11:11
poj
Quick Guide: Steps To Perform Text Data
Cleaning
in Python
Quick Guide: Steps To Perform Text Data
Cleaning
in Python Introduction Twitter has become an inevitable
·
2015-11-03 22:24
python
SGU 405 Totalizator
second(s) Memory limit: 65536 kilobytes input: standard output: standard Some time ago Vasya was
cleaning
·
2015-11-01 09:42
li
Sql Server 清除日志的存储过程 Procedure of
cleaning
sql server's log
CREATE PROCEDURE [ dbo ] . [ strink_logspace ] AS SET NOCOUNT ON DECLARE @LogicalFileName sysname, &n
·
2015-10-31 09:24
SQL Server
android-java.lang.OutOfMemoryError: bitmap size exceeds VM budge
This answer has 2 parts 1) its not how much images the screen has, but being carefull on
cleaning
·
2015-10-31 09:43
Coursera-Getting and
Cleaning
Data-Week3-dplyr+tidyr+lubridate的组合拳
Coursera-Getting and
Cleaning
Data-Week3 Wednesday, February 04, 2015 好久不写笔记了,年底略忙。。
·
2015-10-31 08:24
Date
make clean vs make clobber
, and picks up what has changed from the last build, so if you run repo sync and then build without
cleaning
·
2015-10-30 14:51
clob
Unix系统安装MySQL-python出现UnicodeDecodeError错误解决方法
command 'gcc' failed with exit status 1 ----------------------------------------
Cleaning
·
2015-10-30 12:21
unicode
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