Essential Python Lib
This section describes various types of libraries commonly used by Python for big data analysis.
Numpy Python-specific standard module library for numerical computation, including:
1. A powerful n-dimensional Array object Array;
2. Mature (broadcast) function libraries;
3. toolkit for integrating C/C ++ and Fortran code;
4. Practical linear algebra, Fourier transformation, and ran
):int isprime (int N) {int i;if (n = = 1) return 0;if (n 2 = = 0) return 0;for (i = 3; I For B, obviously there is, B = O (LOGN).For C, because B = O (logn), 2B = O (N), that is, 2B/2 = O (√n), the worst-case run time in B is: O (2B/2)For D, the running time of the latter is the square of the former running time, which is easily known by the solution in C.For E,wiss said: B is the better measure because it more accurately represents the size of the input.
All rights Reserved.author: Haifen
output of data by shoot the head, and the mining algorithm is only to prove how clever your decision is.
From the analysis output, data analysis can be presented in charts, text, tables, business derivation processes, or a series of advanced mathematical formulas. It is obvious that the charts are the most impressive,
1. The data analysis (Douban) book is quite simple. The basic content is involved, and it is clear. Finally, we talked about R as a plus.Difficulty level: very easy.2. Beer and diapers (Douban) are the most typical cases.Difficulty level: very easy.3. The beauty of data (Douban) An introductory
: Network Disk DownloadFirst, the content of the book is a foreign data structure and algorithm analysis of the classic textbook, using the excellent Java programming language as the implementation tool to discuss the data structure (the method of organizing a large number of data
main purpose is to separate the specific implementations of the abstract data types from their functions. The program must know what the operation is doing, but it's better if you don't know how to do it.tables, stacks, and queues may be three basic data structures in all computer science, and a large number of examples attest to their wide range of uses. In particular. We see how the stack is used to reco
function14.hlookup function15.indirect function. Index, Match function17. Chart Introduction18. Making a simple pivot table19. slicers, Timeline Additions20. Create a pivot table from multiple tables21. Dynamic Pivot Table22. Associated Pivot Table The 3rd Chapter: The problem of programming solving for Excel Advanced analysis23.Excel Advanced Planning solution to complete the pharmaceutical raw material m
Example the concentration of a solution is proportional to the peak area of the chromatographic instrument, and the standard curve of the corresponding peak area at different concentrations is to be established to test the actual concentration of unknown samples. 8 sets of corresponding data are known, the standard curve is established, the curve is evaluated and the residual data is analyzed.
This is a ty
[Python Data Analysis] solve and optimize some problems in Python3 Excel (2), pythonpython3
After the previous article titled "Python Data Analysis" and "Excel in Python3"-taking Douban book
Case: rfm analysis of member customer transaction data using Excel
Background:
A Member Service Enterprise has about 1200 member customers in the past year. As the company wants to activate promotions for different categories of inactive customers, it also plans to launch a series of promotions for key customers to retain these customers and maintain their activi
simple examples, I think readers should be able to quickly get started and efficiently author custom formulas in Excel.Interface (Ribbon,panel) and COM server supportExcel DNA supports creating a custom panel, adding a WinForms custom control, inheriting from System.Windows.Forms.UserControl, and then adding the following code call.CustomTaskPane MYCTP = Customtaskpanefactory.createcustomtaskpane (typeof(MyUserControl), MyTitleMore information can be found in the download source code package, w
What is a data perspective analysis?
The data perspective analysis is to summarize, filter, analyze, compare and draw the data in different dimensions. Used to discover trends in data and differences caused by different factors.
sampling weights weights = [0, 0, 0, 0, 0.5, 0.5]df_inner.sample (n=2, weights=weights)As can be seen from the sample results, the latter two high-weighted data are selected.There is also a parameter replace in the sample function that sets whether to put back after sampling.# do not put back df_inner.sample (n=6, replace=false) after sampling# after sampling, put back df_inner.sample (n=6, Replace=true)Description statisticsThe ability to describe s
1, take the office07 version as an example; Create and open an Excel table, as shown in
2, first add data Analysis plug-in, click on the top left corner button, appear menu page, select the lower right corner "Excel Options" button, click, as shown
3, then click the "Add-ins" option, select the "
1, new and open Excel table
2, first add data Analysis plug-in, click on the top left corner button, appear menu page, select the lower right corner "Excel Options" button click
3, then click the "Add-ins" option, select the "Analysis Tool Library", click the "Go to" b
After you configure your environment, you can use Excel for data mining. Environment configuration issues can be found in:http://blog.csdn.net/xinxing__8185/article/details/46445435Sample dmaddins_sampledata.xlsxFiles:http://download.csdn.net/detail/xinxing__8185/8780481In the Data table, select Table Analysis Tools Sa
1. Create tables in access as required, not limited to access, but also other data sources;
2. Open Excel and select the pivot table;
3. Select an external data source;
4. select new data source and fill in the data source link information. In this example, select
to maintain the same, easy to use, will be used in ERP will use the inventory machine.Convenient and fast, reduce labor cost, improve work efficiency, reduce manual manual input error.Real-time dynamic counting scheme reduces counting time by 80%, without closing the store, without data import and export. Inventory Machine free test. Free trial, package to teach package meeting.Three Benefits of mobile data
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.