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"Introduction" To some extent, E-commerce can be said to be the meaning of web analytics. This article explores one of the most common metrics for e-commerce sites: Abandonment Rate. Direct E-commerce analysis is less involved in this blog area, because I have been "immature" that E-commerce site analysis and our usual site analysis is not fundamentally different. After all, even if it is not an e-commerce site, it still has one (or more) can be quan

Label:MONGODB statistical retention rate with MapReduce(Kyung's Column)The definition of retention is based onNew account number X day: New account added in the date of the new date on the X-day of the login behavior is recorded as retainedThe output is as follows: (similar to the League of Friends retention rate display)Retained usersRegistration time new User retention rate1 days after 2 days 3 days after

1. definition In the case of discrete-time speech signals, if an adjacent sample has a different algebraic symbol, it is known to have occurred over 0. The number of times in a unit time is 0 and is called over 0. The short-term average over 0 rate is defined asAt the moment, I haven't figured out why the speech signal is truncated. Why should I convolution a window function, why not multiply it directly?consider that the non-0 value range of

Recently in their own groping Vue's use, because compared to just go to see tutorials and examples, feel better to write a demo to get started quickly. Just see the applet has a simple but very delicate application of the minimalist exchange rate, and its expression is similar to Vue's form of expression, so think of a simple application to try it. The first step is to build a simple HTML structure.DivID= "Demo"> H1>Exchange

628 is the group leader, the main task of the early stage is the database design, in the latter part of the implementation of the function module work, the implementation of the file upload and parse Excel table functions, responsible for coordinating the work and communication between the team members, and also the last stage to demonstrate the personnel; So the contribution rate is 30 %。601 is mainly responsible for the implementation of the functio

[Wbia 1.4] records how to get the link, so you can easily get all URLs from this file. The basic idea of evaluating capture coverage is also very simple. Assume that the number of webpages I crawled is X and the total number of webpages is N, and the coverage rate is X/n. However, since N cannot be obtained, we need to use the sampling method. Random sampling from a webpage collection. Assume that the total number of samples is N, and X of the N web p

SEO is currently a natural ranking optimization technology for search engines. A reasonable optimization scheme is developed based on the search engine mechanism to effectively promote the effectiveness of the website. It is like a circle, achieving the ultimate purpose. How can we achieve the website conversion rate? Connect SEO is currently a natural ranking optimization technology for search engines. A reasonable optimization scheme is developed ba

The most important Optimization of body rendering is to reduce GPU sampling. Testing the filling rate of the GPU material can guide our work. Do you want to know why the GPU can only reach 12 FPS in 800*600 environments? This depends on the number of GPU samples per second. I wrote a simple OSGProgramTo test the number of samples. Click here to download The procedure is simple. There are several steps: create a window, generate and set the texture

Advertisement form: beautify your advertisement to get it *** Which type of advertisement do you like? Skyscraper? Rectangle or square? What is the border and background color? There are thousands of solutions for you to choose from. Many people asked Google to make decisions for them. The result is usually the default appearance setting of the AdSense system. How many mistakes have they made! My experience tells me that this practice is tantamount to throwing money in the river. I have also was

There are many ways to improve effective users, such as perfecting the registration mechanism, strengthening the audit of registered users, improve the quality of members, in the user entered the site "threshold" when strict. While this can reduce the number of user registrations on a Web site, it does reduce the amount of invalid junk users. For some professional more rigorous web site forum is still more applicable. Another important method is to improve the user's return visit

CPU utilization good understanding, that is, CPU utilization, more than 75% is higher (also has the argument is 80% or higher). In addition to this indicator, but also in combination with the load average and context Switch rate, it is possible that the high CPU is due to the latter two high indicators. Load Average, this is hard to measure. Online Search a lap, have not seen a few reasonable explanations. I have 100 concurrent user tests. These tw

Operating the site is not as long as the keyword optimization, bringing the flow so simple, with the flow, we need to pay attention to the site bounce rate. What is the site bounce rate? Explanation on the Web: the percentage of users who have only access to a single page in the total number of users who have access to only one page. A lot of newly optimized website, bounce

Fedora17 terminal view real-time network speed rate :#! /Bin/sh # rate-t # real-time display # rate # display once # Nic name needs to be customized # ora17 # HL_START = "\ 033 [37; 40; 1 m "HL_START =" \ 033 [31; 42; 1 m "HL_END =" \ 033 [0 m "DEV_NAME =" wlan0 "# DEV_NAME =" p5p1 "functi Fedora 17 terminal view real-time network speed

= 0.5/1ns = 500 MHz If 3% measurement error is required: the required oscilloscope bandwidth = 1.9*500 MHz = 950 MHz If 20% measurement error is required: the required oscilloscope bandwidth = 1.0*500 MHz = 500 MHz Therefore,The most important factor that determines the bandwidth of the oscilloscope is the fastest increase time of the tested signal. OscilloscopeThe system bandwidth is composed of the oscilloscope bandwidth and the probe bandwidth.Jointly decided: A. Gaussian Freque

According to statistics, at present, China's telecom network service access rate is only about 45%. If the access rate increases by one percentage point, the income can reach 1 billion yuan, and the current switch overload in China can be significantly improved, therefore, it is very important to improve the service access rate of the telecom network. With the de

solution to slow speed after WDS wireless bridging one, adjust the distance between routers If the primary and secondary routers are too far away or too many walls, it may result in lower signal strength of the secondary router searching to the main router, which affects the transmission rate between the two, which leads to the low rate of the wireless terminal. It is recommended to adjust the distance be

The code rate is the data transfer time of the unit time to transfer the number of digits, generally we use the unit is Kbps is thousands per second. The popular point of understanding is that sampling rate, unit time the larger the sampling rate, the higher the precision, the processing of the file will be closer to the original document, that is, the more detai

Jump rate is currently a very active SEO industry a word, we first take you to know, what is called the bounce rate of the site? Google's explanation for the bounce rate is that the bounce rate refers to the percentage of single page accesses or the number of visitors who leave the site from the entry (destination) pag