The two main problem of measurement-based load modeling is model structure based on measured load characteristics data and the model parameters identification.

总体测辨法负荷建模的两个主要问题是基于实测负荷特性数据的模型结构和模型参数的辨识。

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This is because the underlying data characteristics change as we move from one source to another.

这是因为在我们从一个来源转移到另一个来源时，底层的数据特征会发生更改。

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It analyzed the largest bank holding companies in terms of total assets according to the National Information Center, a repository of financial data and institution characteristics collected by the Federal Reserve System.

FORBES: The 15 Best-Paying Big Banks

We only assessed the 20 largest bank holding companies in terms of total assets, as of December 2012, according to the National Information Center, a repository of financial data and institution characteristics collected by the Federal Reserve System.

FORBES: The Big Banks Hiring The Most Right Now

Neural networks and massively parallel computers, which can crunch huge amounts of data, dig out characteristics which are common to good customers.

ECONOMIST: Hi ho, hi ho, down the data mine we go