rate mackeeper

　　What is the user retention rate? In the Internet industry, users begin to use the application within a certain period of time, and after a period of time, continue to use the application is considered to be retained; This part of the user accounted for the current percentage of new users is the retention rate, according to every 1 units of time (example days, weeks, months) to be counted. As the name sug

First of all, we need to understand the low rate of conversion of a website under what conditions, small knitting to the situation mainly divided into the tourist time and the rate of jump out of our site, Below we can be made up of a website www.6hoo.com data screenshot can be seen, small part of the site to stay the longest length of 120.38S, the shortest 21.42S, see this data a lot of friends may feel go

I searched for the exchange rate application on the marketplace and found that most of them can only be converted to the other at the same time. Therefore, I wrote the currencyexchanger that can convert multiple currencies at the same time. This article will serve as the release page of currency exchanger. V1.6 update: -Added: each live tile supports conversion of up to four currencies.-Added: mobile phone shaking detection is supported to quickly upd

sound card perspective, it has three basic functions: first, the music synthesis and pronunciation function; the second is the mixer and DSP functions. The third is the input and output functions of analog sound signals. Pchifi uses only half of the third function: analog signal output. from a more detailed point of view, the output analog signal is divided into x.0 and X.1, the former is generally 2.0, used to listen to music, which is also the channel used by hifi; the latter is generally 2.1

JavaScript coverage rate statistics and javascript coverage rateMain requirements 1. Support for browser nodejs Because javascript can be run in both the browser environment and nodejs environment, you need to be able to measure the unit test coverage in both environments.2. Transparent and seamless When writing unit test cases, you do not need to write more code to support coverage rate statistics. You ca

1. there are nine modulation methods, including BPSK, dbpsk, 2ASK, 2PSK, PSK, opsk, dqpsk, 16QAM, 64QAM, and theoretical error rate formula. You can view the book and use MATLAB to draw a picture to understand the theoretical error rate. 2. SNR :. Channel environment: AWGN Simulation process: modulation + AWGN + demodulation + Ber Based on the MATLAB simulation program, the following results are obtai

data records the amplitude, and the sampling accuracy depends on the size of the number of sampling digits: 1 byte (that is, 8 bit) can only record 256 numbers, that is, it can only divide the amplitude into 256 levels; 2 bytes (that is, 16 bit) can be subdivided into 65536 numbers, which is now the CD standard; 4 bytes (that is, 32 bit) can segment the amplitude to 4294967296 levels, which is unnecessary. [Number of channels] That is Number of sound channels. A single sound channel and a

Calculate the circumference rate by using the Newton series, 15 decimal places after the decimal point, Newton's circumference Rate In the 18th century, mathematicians developed a number of Infinite Series for calculating the circumference rate. Among them, Newton studied the following series: This Infinite Series is used to calculate the circumference

Use Python to calculate the accuracy of Word segmentation results, recall and F-valuesThe test file Output.txt format is as follows:Regiment b B round e e is be being is spring b B section e e thousand b b e e no b b Change E E's be is ... ... ....The Python code is as follows:1, read into the Output.txt file, and establish the corresponding column named ' character ', ' train ', ' Test ' dataframeImportPandasline=[]file=open (R'e:\ \

User experience (UEO) mainly through site design, site keyword layout, website promotion, for the lack of details of the site to constantly improve the conversion rate of the site. Web site to improve user experience the ultimate goal is to mention Rise to the site to increase the rate of the purchase of products or services. Improve the user experience degree one: User behavior analysis 1. What is the p

This article mainly introduces the use of Yahoo exchange rate interface to achieve real-time exchange rate conversion example, we refer to the use of the bar The code is as follows: The code is as follows: function getexchangerate ($from _currency, $to _currency) { $amount = Urlencod E ($amount); $from _currency = UrlEncode ($from _currency); $to _currency = UrlEncode ($to _currency); $url

If Keil arm is used, vpbdiv = 0x00000000 is automatically generated in startup. S, which leads to fpclk dividing by 4. The baud rate is reduced by four times. The default value of startup. s in Keil is as follows .; // ; // ; // ; // ; // ; // ; // ; // ; // ; // ; // Vpbdiv_setup equ 0vpbdiv_val equ 0x00000000 we will change it: Vpbdiv_setup equ 1 Vpbdiv_val equ 0x00000001 Solve the problem. # Include # Include "config. H" # Define uart_bau

and the intersection of the Ground Truth, which is the accuracy rate of the detection:Iou=detectionresult⋂groundtruthdetectionresult⋃groundtruth IoU = \frac{detectionresult⋂groundtruth} { Detectionresult⋃groundtruth} As shown in the following illustration:The blue box is: GroundtruthThe Yellow box is: DetectionresultThe green box is: Detectionresult⋂groundtruthThe red box is: Detectionresult⋃groundtruth to say. 1, this article refers to the followin

Http://www.cnblogs.com/fengfenggirl/p/classification_evaluate.htmlFirst, IntroductionThere are many classification algorithms, and different classification algorithms use many different variants. Different classification algorithms have different specific, different data sets on the performance of different, we need to choose according to the specific task of the algorithm, how to choose the classification, how to evaluate a classification algorithm, the previous decision tree Introduction, we m

Which of the following affects the definition of a movie? video bit rate, frame rate, and resolution? Bit Rate: affects the volume, which is proportional to the volume. The larger the bit rate, the larger the volume. The smaller the bit rate, the smaller the volume. Bit

Let me introduce you to an example, which is the RMB exchange dollars, you can refer to friends. As shown in Iphone6 plus we open the "stock Market" APP, click on the list button in the lower right corner to add items, enter "Cny=x" in the search box, and then click "Add" so we will see that the RMB exchange rate for US dollars appears in the stock list. This allows you to see the relevant parameters. Of course, if we want to add other, we need to

　　The current use of the most common display is just two, CRT and LCD display, because the working principle of different, on the screen refresh rate settings are also different, in general, CRT monitor set 80-85 Hz is advisable, set too low will have damage to eyesight, set too high may speed up the aging of the display. for an LCD monitor, set to the default 60 Hz is advisable. How to adjust the screen refresh