Decentralization of cross variables

1. According to Hou Jietai: the so-called centralization refers to subtracting the mean value of a variable from its expected value. For sample data, each observation value of a variable is subtracted from the sample average value of the variable, and the transformed variable is centralized
for your question, subtract the mean from each measurement.

2.

In recent years, the impact of black technology AI can be described as wave after wave. From dark blue to alphago, people have repeatedly exclaimed at the subtlety of technology and the powerful learning ability of AI

so how will AI combine with blockchain, and what breakthroughs and innovations will it bring

let's look at the evolution of blockchain. From blockchain 1.0 marked by BTC to blockchain 2.0 marked by Ethereum and combined with "smart contract", to blockchain 3.0 marked by EOS with stronger expansibility

as far as BTC is concerned, its function is single. For users, it is nothing more than mining and transfer. So we have an upgraded eth

eth provides a development platform for users to write smart contract publishing applications, but its performance is insufficient and the handling fee is expensive. This is bm's EOS

one of the main reasons why EOS can get people's attention quickly is that it has stronger scalability than Ethereum. It's stable and secure, but "super node power leads to insufficient decentralization" is no more decentralized than eth. In other words, in order to achieve fast enough data processing, it makes a compromise on the degree of decentralization. Then Velas appeared

based on the characteristics of EOS, Velas uses AI to enhance and realize decentralization. By introcing AI (Artificial Intelligence) into the blockchain technology, it solves the disadvantages brought by the rule of man, and automatically adjusts the system through AI to proce the best results without affecting the processing standards of the system, thus recing the cost of consensus

"AI is technological innovation, blockchain is institutional innovation"

3. Centralization is to subtract the mean and Z-score is to divide it by the standard deviation. Both of them are centralization methods.

4. Not necessarily, centralization is only for the convenience of explanation, and does not affect the regression coefficients Central treatment of regulatory effect of South Heart Network

5. This is used for the analysis of regulatory effect. After centralizing the independent variable and the regulatory variable, the interaction term can be obtained by multiplying them Regression analysis of the regulatory effect of SPSS in the southern atrium

6. The frequency of 6600GT is 500 / 900, the price of GDDR3 video memory is 1200 yuan, the frequency of 6800xt is 300 / 700, and the price of DDR video memory is 1240 yuan, 6800xt can make up for its inherent frequency disadvantage only by combining with GDDR3 video memory

of course, AGP platform, 2.4b P4 CPU and 3D mark03 will have an impact on the test results, but I believe that unless GDDR3 high-frequency video memory is used, the 6800xt is slightly inferior to the 6600GT.