The sunspots number could consider to be a tracer for the solar activities which has a strong influence on the space weather. Also, the sunspots consider to be an important solar future which has a well-known distribution over a certain time represent the solar activity. The sunspot numbers R_m has a good relation with solar activities, so R_m can be used as an indicator for this kind of sudden eruption and for prediction the forthcoming solar activity. To predict solar activity there are many techniques some are purely statistical and others related to physics (Kane 2007[1]; Du et al. 2008[2]; Pesnell 2008[3]).The availability of the historical records of yearly sunspot numbers in the time of three centuries published in SIDC website encourages
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2002[7] and Wang et al. (2009)[8]. Prameters of the preceded cycles were used to predict the characters of the future cycles, Cameron & Schussler (2008)[9], Ajabshirizadeh et al (2011)[10], Kane (2011)[11], Du (2012)[12]. Hathaway et al. (1994)[13]; Li (1999)[14]; Volobuev (2009)[15]; Du(2011)[16], describe the shape of a new solar cycle using few parameters such as the previous minimum R_0 , effective duration (D_e) and maximum time (T_max)of the activity to (R_m) . Also, expected monthly values R_I are estimated as the average of the values of months which matching the same months of the similar from the start of the cycles. The data and parameters used in this study are shown in Section 2. Some of the correlations between these parameters are analyzed in Section 3, and in Section 4, we employ the three parameters of R_0 , D_e and T_max, to further develop the concept of a similar cycle and its application in prediction. In Section 4.1, a quantity, the “degree of similarity (η),” is proposed to describe the similarity of a parameter in past cycles relative to a referenced one (the predictor for a cycle to be
2002[7] and Wang et al. (2009)[8]. Prameters of the preceded cycles were used to predict the characters of the future cycles, Cameron & Schussler (2008)[9], Ajabshirizadeh et al (2011)[10], Kane (2011)[11], Du (2012)[12]. Hathaway et al. (1994)[13]; Li (1999)[14]; Volobuev (2009)[15]; Du(2011)[16], describe the shape of a new solar cycle using few parameters such as the previous minimum R_0 , effective duration (D_e) and maximum time (T_max)of the activity to (R_m) . Also, expected monthly values R_I are estimated as the average of the values of months which matching the same months of the similar from the start of the cycles. The data and parameters used in this study are shown in Section 2. Some of the correlations between these parameters are analyzed in Section 3, and in Section 4, we employ the three parameters of R_0 , D_e and T_max, to further develop the concept of a similar cycle and its application in prediction. In Section 4.1, a quantity, the “degree of similarity (η),” is proposed to describe the similarity of a parameter in past cycles relative to a referenced one (the predictor for a cycle to be