Markov Chain is suitable for short-term forecast of great capacity sample data sequence, but gray system forecast method is suitable for medium-term forecast of few capacity sample data sequence.

马尔柯夫链适用于大样本数据序列的短期预测，而灰色系统预测方法适用于小样本数据的中期预测。

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Therefore, our policy stance must be determined in light of the medium-term forecast for real activity and inflation, as well as the risks to that forecast.

NPR: Economic Swoon to Continue, Bernanke Says

However, the Bank has somewhat reduced its medium-term forecast for consumer spending growth and says that it could turn out to be even lower because household debt has reached a record level in relation to income.

ECONOMIST: The economy