statistical software for data analysis

"Data Recovery failure description"Company financial personnel for data maintenance, misoperation, in the financial software to initialize the data, because recently did not do backup, it caused a lot of financial documents lost.Because the financial data is very important,

of data in our work. From Z-score, T-Test, X2 test, variance analysis to regression equation, there are many kinds of statistical methods, which should be used well. I personally feel that the traditional statistical textbook is not interesting because the concept of the book is too much, divorced from the reality of

. Typically, a graph of throughput vs load is generated in the performance analysis to explore the capacity limits of the network hosting business. The load scalar here is used as a separate variable, and as the simulation input is changed in each simulation, the throughput is recorded as a result scalar as a non-independent variable.The source of the scalar result is the active output of the call Op_stat_write_scalar () function in the process code.T

The Wireshark is an open-source grab tool with an interface that can be used to perform statistical analysis of system traffic.InstallationSince Wireshark is interface-based, it is generally run in an interface environment and can be installed by Yum:Yum Install -y Wireshark wireshark-gnomeSo there are two packages installed here.UsageRecommended article: Wireshark Basic Introduction and learning TCP three-

Absrtact: The classical statistical analysis methods are mainly regression analysis, logistic regression, decision tree, support vector machine, cluster analysis, correlation analysis, principal component analysis, correspondence

Recently in the data analysis of a traffic flow, the demand is for a huge amount of urban traffic data, need to use MapReduce cleaning after importing into hbase storage, and then using the Hive External table associated with hbase, hbase data query, statistical

the browser makes sense because the website records these activities as access data, but this is not due to the user's choice, which leads to a high browser share. As a competitor of StatCounter, the data of Net Applications is more trustworthy by Microsoft. According to the company, their approach has better removed the impact of crawler programs on market share. According to statistics, Internet Explorer

Website statistical analysis System Piwik (like Google Analytics), useful? I configured the Piwik,php+mysql+apache on my own server (the company). But I found that I only in my deployment of Piwik server to visit the target site, there will be statistical data, such as in other computers to visit the target site, there

Website statistical analysis System Piwik (like Google Analytics), useful? I configured the Piwik,php+mysql+apache on my own server (the company). But I found that I only in my deployment of Piwik server to visit the target site, there will be statistical data, such as in other computers to visit the target site, there

We all know the actual application optimizer for PL/SQL statement execution in Oracle databases, which has cost-based related optimizer CBO) and regular-based optimizer RBO ). The actual Optimization Method of RBO depends on a set of strict syntax rules. As long as the statements written according to the rules, no matter whether the data table or index content changes, the execution plan of PL/SQL statements is not affected ". CBO has been introduced

Optimizer for PL/SQL statement execution in Oracle databases, including cost-based optimizer (CBO) and rule-based optimizer (RBO ). The RBO optimization method depends on a set of strict syntax rules, as long as the statements written according to the rules, regardless of whether the data table and index content change, the execution plan of PL/SQL statements is not affected ". CBO has been introduced since Oracle version 7. Many new technologies adop

1. Descriptive statistical analysis-quantitative variables(1) The Basic installation package includes:The summary () function provides the mean value of the minimum, maximum, four, and numeric variables, as well as the frequency statistics of factor vectors and logical vectors;The Apply () or sapply () function calculates any descriptive statistic you choose. The format is: sapply (x,fun,options). where x i

tableFrequent additions and deletions often lead to slow access. View the physical size and partition of a table: [SQL] Replace emp with your table name,The table name must be capitalized in single quotes..Generally, 300 million data is about MB. 300 m a day, about 10g a month. Partitions can be performed on a monthly basis, with 12 tables per month per year. Each partition table is a subpartition every day. Awr