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Enable windows search from https://answers.microsoft.com/en-us/windows/forum/all/enable-windows-search-service-again/7e8dd7f1-9b54-e011-8dfc-68b599b31 阅读全文
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Well, to understand why the covariance matrix of a population is always positive semi-definite, notice that: \[\sum_{i, j=1}^n y_i \cdot y_j \cdot \op 阅读全文
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cross-covariance In the case of complex random variables, the covariance is defined slightly differently compared to real random variables. For comple 阅读全文
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Prof. YUAN Yaxiang was elected as a new CAS (Chinese Academy of Sciences) academician. Prof. YUAN graduated from Xiangtan University, and got his Ph.D 阅读全文
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use JGraph and develop a BPM-like simulator. For developers, use eclipse extension. It will integrates python, c++ and JGraph. 当用simulink,考虑网络只是一个黑盒。D 阅读全文