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TOJ 2926 Series

Description An arithmetic series consists of a sequence of terms such that each term minus its immediate predecessor gives the same result. For example, the sequence 3, 7, 11, 15 is the terms of the arithmetic series 3+7+11+15; each term minus its pr…

利用Python进行数据分析(8) pandas基础: Series和DataFrame的基本操作

一.reindex() 方法:重新索引 针对 Series   重新索引指的是根据index参数重新进行排序. 如果传入的索引值在数据里不存在,则不会报错,而是添加缺失值的新行. 不想用缺失值,可以用 fill_value 参数指定填充值. 例如:   fill_value 会让所有的缺失值都填充为同一个值,如果不想这样而是用相邻的元素(左或者右)的值填充,则可以用 method 参数,可选的参数值为 ffill 和 bfill,分别为用前值填充和用后值填充: 针对 DataFrame   重新…

利用Python进行数据分析(7) pandas基础: Series和DataFrame的简单介绍

一.pandas 是什么 pandas 是基于 NumPy 的一个 Python 数据分析包,主要目的是为了数据分析.它提供了大量高级的数据结构和对数据处理的方法. pandas 有两个主要的数据结构:Series 和 DataFrame. 二.Series Series 是一个一维数组对象 ,类似于 NumPy 的一维 array.它除了包含一组数据还包含一组索引,所以可以把它理解为一组带索引的数组. 将 Python 数组转换成 Series 对象: 将 Python 字典转换成 Serie…

数据分析(8):Series介绍

Series Series由一组数据及索引组成 索引 采用默认索引 data = pd.Series([4, 3, 2, 1]) 自定义索引 data = pd.Series([4, 3, 2, 1],index = ['a', 'b', 'c', 'd']) 通过索引取值 data['a'] data[['a', 'd']] 通过赋值修改索引 data.index = ['e', 'f', 'g', 'h'] name属性 data.name data.index.name 运算 布尔运算 d…

POJ 3233Matrix Power Series

妈妈呀....这简直是目前死得最惨的一次. 贴题目: http://poj.org/problem?id=3233 Matrix Power Series Time Limit: 3000MS Memory Limit: 131072K Total Submissions: 19128 Accepted: 8068 Description Given a n × n matrix A and a positive integer k, find the sum S = A + A2 + A3 +…

highchart 添加新的series

code: <!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>流量统计</title> <script type="text/javascript" src="/ads/static/js/jque…

C# Chart控件，chart、Series、ChartArea曲线图绘制的重要属性

http://blog.sina.com.cn/s/blog_621e24e20101cp64.html 为避免耽误不喜欢这种曲线图效果的亲们的时间,先看一下小DEMO效果图: 先简单说一下,从图中可以看到一个chart可以绘制多个ChartArea,每个ChartArea都可以绘制多条Series.ChartArea就是就是绘图区域,可以有多个ChartArea叠加在一起,series是画在ChartAarea上的,Series英文意思是"序列.连续",其实就是数据线,它可以是曲线.…

pandas 学习（1）： pandas 数据结构之Series

1. Series Series 是一个类数组的数据结构,同时带有标签(lable)或者说索引(index). 1.1 下边生成一个最简单的Series对象,因为没有给Series指定索引,所以此时会使用默认索引(从0到N-1). # 引入Series和DataFrameIn [16]: from pandas import Series,DataFrame In [17]: import pandas as pd In [18]: ser1 = Series([1,2,3,4]) In [19…

TOJ 2776 CD Making

TOJ 2776题目链接http://acm.tju.edu.cn/toj/showp2776.html 这题其实就是考虑的周全性...  贡献了好几次WA, 后来想了半天才知道哪里有遗漏.最大的问题就是, 当零头是13的时候, 不一定前面的光盘都刻录到最大值.比如29,16这种情况, 如果前面的刻录最大值,这样就需要3个盘,而最少的却是 2个就够了,(15,14) 即可:知道这种情况,这题基本就可以了: 注意一下这几个数据: 13 15 输出为2 29 16 输出为2 这条题目看起来很容易,但…

TOJ 1191. The Worm Turns

191.   The Worm Turns Time Limit: 1.0 Seconds   Memory Limit: 65536K Total Runs: 5465   Accepted Runs: 1774 Worm is an old computer game. There are many versions, but all involve maneuvering a "worm" around the screen, trying to avoid running th…

（转）LSTM NEURAL NETWORK FOR TIME SERIES PREDICTION

LSTM NEURAL NETWORK FOR TIME SERIES PREDICTION Wed 21st Dec 2016   Neural Networks these days are the "go to" thing when talking about new fads in machine learning. As such, there's a plethora of courses and tutorials out there on the basic vani…

Time Series data 与 sequential data 的区别

It is important to note the distinction between time series and sequential data. In both cases, the data consist of a sequence, or list of values, in which the order is important. Time series is a subclass of sequential data where the longitudinal co…

survey on Time Series Analysis Lib

(1)I spent my 4th year Computing project on implementing time series forecasting for Java heap usage prediction using ARIMA, Holt Winters etc, so I might be in a good position to advise you on this. Your best option by far is using the R language, yo…

echarts异步加载柱状图遇到的错误- Error: Component series. not exists. Load it first.

今天看了下echarts教程之中的异步加载柱状图,我按照教程中的代码敲出来之后再运行,就报了一个 Error: Component series. not exists. Load it first. 的错误,话不多说,教程中的代码如下所示: function fetchData(cb) { // 通过 setTimeout 模拟异步加载 setTimeout(function () { cb({ categories: ["衬衫","羊毛衫","雪纺衫&…

MOOCULUS微积分-2: 数列与级数学习笔记 7. Taylor series

此课程(MOOCULUS-2 "Sequences and Series")由Ohio State University于2014年在Coursera平台讲授. PDF格式教材下载 Sequences and Series 本系列学习笔记PDF下载(Academia.edu) MOOCULUS-2 Solution Summary Given a function $f$, the series $$\sum_{n=0}^\infty {f^{(n)}(0)\over n!}x^n$$…

MOOCULUS微积分-2: 数列与级数学习笔记 6. Power series

此课程(MOOCULUS-2 "Sequences and Series")由Ohio State University于2014年在Coursera平台讲授. PDF格式教材下载 Sequences and Series 本系列学习笔记PDF下载(Academia.edu) MOOCULUS-2 Solution Summary Let $(a_n)$ be a sequence of real numbers starting with $a_0$. Then the power…

MOOCULUS微积分-2: 数列与级数学习笔记 4. Alternating series

此课程(MOOCULUS-2 "Sequences and Series")由Ohio State University于2014年在Coursera平台讲授. PDF格式教材下载 Sequences and Series 本系列学习笔记PDF下载(Academia.edu) MOOCULUS-2 Solution Summary If $$\sum_{n=1}^\infty |a_n|$$ converges (i.e. absolutely convergent), then $$…

MOOCULUS微积分-2: 数列与级数学习笔记 2. Series

此课程(MOOCULUS-2 "Sequences and Series")由Ohio State University于2014年在Coursera平台讲授. PDF格式教材下载 Sequences and Series 本系列学习笔记PDF下载(Academia.edu) MOOCULUS-2 Solution Summary Suppose $(a_n)$ is a sequence with associated series $$\sum_{k=1}^\infty a_k$$…

Build better apps: Windows 10 by 10 development series

http://blogs.windows.com/buildingapps/2015/08/05/build-better-apps-windows-10-by-10-development-series/ We’ve been talking about the new capabilities that come with Windows 10 for some time, but an area that we haven’t really dug into yet is how they…

【Highcharts】 动态删除series

先绘制,后删除多余 var chart = new Highcharts.Chart(options); if (chart.series.length > result.dataList0.length) { for (var i = result.dataList0.length; i < options.series.length; i++) { chart.series[chart.series.length - 1].remove(); } }…

Hightcharts动态创建series

第一种方法: 申明options时动态设置series,然后再创建chart对象 代码如下: <html> <head> <title>Highcharts Example</title> <script language="javascript" type="text/javascript" src="js/jquery.min.js"></script> <scri…

POJ3233Matrix Power Series（十大矩阵问题之三 + 二分+矩阵快速幂）

http://poj.org/problem?id=3233 Matrix Power Series Time Limit: 3000MS   Memory Limit: 131072K Total Submissions: 18658   Accepted: 7895 Description Given a n × n matrix A and a positive integer k, find the sum S = A + A2 + A3 + … + Ak. Input The inpu…

Summarize Series For Burying My College

Summarize  Series  For  Burying  My  College                                             For  Grade 4  序 5月份末,终于带着一份满意的offer回到学校,等待7月份去公司报道,开始工作! 回想过去的一年,一直在找工作中度过,有换方向,有换公司,有失败痛苦,也有因身体的不适萌生回老家的想法!踌躇迷茫,失败再失败!但这些最终也让我变得更加了解自己,了解这个社会! 从去年(2013年6月,大三)开始…

用R分析时间序列(time series)数据

时间序列(time series)是一系列有序的数据.通常是等时间间隔的采样数据.如果不是等间隔,则一般会标注每个数据点的时间刻度. time series data mining 主要包括decompose(分析数据的各个成分,例如趋势,周期性),prediction(预测未来的值),classification(对有序数据序列的feature提取与分类),clustering(相似数列聚类)等. 这篇文章主要讨论prediction(forecast,预测)问题. 即已知历史的数据,如何准确…

关于Highcharts图表组件动态修改属性的方法（API）总结之Series

Highcharts图表组件内的Series很重要,如果说Categries是其大脑,那么Series就是其心脏.这两者才是Highcharts图表组件的重中之重啊.接下来就为大家介绍关于设置Series的相关方法. 一.目录结构 二.API 1.addPoint(添加一个数据点) 参数: options:数据值(①可以是具体的一个Y轴数值,那么X轴坐标系统会随即分配一个:②可以设置一个数组,有着X和Y的数值,如:[xValue,yVlaue] 这样的形式:③可以设置一个Object(对象),详…

python数据分析之pandas库的Series应用

一.pandas的数据结构介绍 1. Series 1.1 Series是由一种类似于一维数组的对象,它由一组数据以及一组与之相关的数据索引构成.仅由一组数据可产生最简单的Series. from pandas import * obj=Series([4,5,-7,6]) print obj print obj[1] 通过索引获取数组值 1.2Series的数组运算会保留索引与值的连接 from pandas import * obj2=Series([4,7,-5,3],index=['d'…

避免多层回调，Node.js异步库Async使用(series)

未使用Async之前coffeescript写的代码: exports.product_file_add = (req,res) -> if !req.param('file_id') return res.json({'flag':'error','msg':'请先上传文件再保存!'}) file_type = req.param('file_type') #判断产品和文件类型,限制上传的数量 params = {} params.product_code = req.param('produ…

Concurrency Series 1

Difference between Processes and Threads Processes A process has a self-contained execution environment. A process generally has a complete, private set of basic run-time resources; in particular, each process has its own memory space.Processes are o…

A Multipart Series on Grids in ASP.NET MVC

A Multipart Series on Grids in ASP.NET MVC Displaying a grid of data is one of the most common tasks faced by web developers. This article series shows how to display grids of data in an ASP.NET MVC application and walks through a myriad of common gr…

How to make remote key fob for 2002 BMW 3 series

Here share with you on how to make remote key fob for 2002 BMW 3 series: Method 1: 1. Working within the vehicle and with the doors shut. 2. Turn the ignition to position 1 and come back to off within 5 seconds. 3. Remove the key from ignition and pr…