2021
DOI: 10.3103/s0884591321040073
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History of Sunspot Research and Forecast of the Maximum of Solar Cycle 25

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Cited by 6 publications
(5 citation statements)
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“…After the gating signal is computed, the scope of h(t) ca cording to Formula (8): where Wz is a weight matrix of the update gate. Then, h(t) can be updated using Formula (10):…”
Section: Grumentioning
confidence: 99%
See 1 more Smart Citation
“…After the gating signal is computed, the scope of h(t) ca cording to Formula (8): where Wz is a weight matrix of the update gate. Then, h(t) can be updated using Formula (10):…”
Section: Grumentioning
confidence: 99%
“…In recent years, statistical models have commonly been applied to predict the sunspot number, such as exponential smoothing [7,8], Kalman filters [9], autoregressive moving average [10], etc. The autoregressive moving average (ARMA) is a well-known classical statistical method [11].…”
Section: Introductionmentioning
confidence: 99%
“…1 º ïî ïå ðåä -í³ìè. Ôà çó Ð ìè ðîç ðà õó âà ëè ó ïðè ïó ùåíí³, ùî òðè âàë³ñòü 25-ãî öèê ëó â³äïîâ³äຠñå ðåäí³é òðè âà ëîñò³ ñî íÿ÷ íî ãî öèê ëó (11.019 ð., çã³äíî ³ç ïà ðà ìåò ðà ìè öèêë³â ñî íÿ÷ íî¿ àê òèâ íîñò³ çà âåðñ³ºþ 2.0 [23]). Äëÿ ðîçðà õóí êó ïà ðà ìåò ðà Ô ïî ïå ðåä íüî íà ìè áó ëî çíàé äå íî ïðî ãíî çî âà íó òðè âàë³ñòü ôà çè ðîñ òó àê òèâ íîñò³ ó 25-ìó öèêë³ (4.254 ð.)…”
Section: T T T T T T T Riseunclassified
“…solar maximum) appears to be foreseeable, the cycle fluctuates in magnitude and duration. Estimating the predicted influence of solar activity on space missions and social technology requires an accurate sunspot number (SSN) forecast [8]. Many facets of human health are thought to be influenced by solar cycles [2].…”
Section: Introductionmentioning
confidence: 99%
“…The quasi-periodic nature of the solar cycle makes it an excellent candidate for applying time-series forecasting methods such as statistical and machine learning techniques to the sunspot number dataset [8]. Time-series forecasting uses statistical and machine-learning algorithms to evaluate historical data in an attempt to predict future values.…”
Section: Introductionmentioning
confidence: 99%