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2019
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Fig 4
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Review Article
Memory Property of Grey Accumulation Generation Sequence
Figure 4
The memory of original AQI value and one-order accumulation value of three cities.
(a) The memory of original Beijing AQI
(b) The memory of 1-AGO Beijing AQI
(c) The memory of original Handan AQI
(d) The memory of 1-AGO Handan AQI
(e) The memory of original Xingtai AQI
(f) The memory of 1-AGO Xingtai AQI