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Ferdi
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edit approved Dec 15, 2014 at 14:09
Tim
edit approved Dec 15, 2014 at 14:09
Tim
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calculation Calculation of RMSE and R^2$R^2$ to compare five numerical methods for determining weibullWeibull parameters

I have calculated weibullWeibull parameters namely, shape parameter and scale parameter using five numerical methods: graphical, moment, maximum likelihood, empirical and energy pattern factor methods. Since I need to compare these methods to find out best method, I need to calculate RMSE and R^2$R^2$ for each method. But

But even if I know the formulas for RMSE and R^2$R^2$, I am not being able calculate as I am confused and a bit unfamiliar with the terms used in those formulas. Please refer the following research journalresearch journal and I want to clearly understand about 'Prediction performance of Weibull distribution model' section of the journal. www.ajsc.leena-luna.co.jp/AJSCPDFs/Vol.3(1)/AJSC2014(3.1-08).pdf

My queries regarding 'statistical tests' are:

  1. How do you calculate 'frequency of weibull' or sometimes it says 'predicted data' ?
  2. To calculate RMSE and R^2$R^2$, do we use frequency of the data ( observed and predicted) or actual data (e.g wind speed, temperature)  ?

I hope you understood my question. Thank you!

calculation of RMSE and R^2 to compare five numerical methods for determining weibull parameters

I have calculated weibull parameters namely, shape parameter and scale parameter using five numerical methods: graphical, moment, maximum likelihood, empirical and energy pattern factor methods. Since I need to compare these methods to find out best method, I need to calculate RMSE and R^2 for each method. But even if I know the formulas for RMSE and R^2, I am not being able calculate as I am confused and a bit unfamiliar with the terms used in those formulas. Please refer the following research journal and I want to clearly understand about 'Prediction performance of Weibull distribution model' section of the journal. www.ajsc.leena-luna.co.jp/AJSCPDFs/Vol.3(1)/AJSC2014(3.1-08).pdf

My queries regarding 'statistical tests' are:

  1. How do you calculate 'frequency of weibull' or sometimes it says 'predicted data' ?
  2. To calculate RMSE and R^2, do we use frequency of the data ( observed and predicted) or actual data (e.g wind speed, temperature)  ?

I hope you understood my question. Thank you!

Calculation of RMSE and $R^2$ to compare five numerical methods for determining Weibull parameters

I have calculated Weibull parameters namely, shape parameter and scale parameter using five numerical methods: graphical, moment, maximum likelihood, empirical and energy pattern factor methods. Since I need to compare these methods to find out best method, I need to calculate RMSE and $R^2$ for each method.

But even if I know the formulas for RMSE and $R^2$, I am not being able calculate as I am confused and a bit unfamiliar with the terms used in those formulas. Please refer the following research journal and I want to clearly understand about 'Prediction performance of Weibull distribution model' section of the journal.

My queries regarding 'statistical tests' are:

  1. How do you calculate 'frequency of weibull' or sometimes it says 'predicted data' ?
  2. To calculate RMSE and $R^2$, do we use frequency of the data ( observed and predicted) or actual data (e.g wind speed, temperature)?
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kancha
kancha
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calculation of RMSE and R^2 to compare five numerical methods for determining weibull parameters

I have calculated weibull parameters namely, shape parameter and scale parameter using five numerical methods: graphical, moment, maximum likelihood, empirical and energy pattern factor methods. Since I need to compare these methods to find out best method, I need to calculate RMSE and R^2 for each method. But even if I know the formulas for RMSE and R^2, I am not being able calculate as I am confused and a bit unfamiliar with the terms used in those formulas. Please refer the following research journal and I want to clearly understand about 'Prediction performance of Weibull distribution model' section of the journal. www.ajsc.leena-luna.co.jp/AJSCPDFs/Vol.3(1)/AJSC2014(3.1-08).pdf

My queries regarding 'statistical tests' are:

  1. How do you calculate 'frequency of weibull' or sometimes it says 'predicted data' ?
  2. To calculate RMSE and R^2, do we use frequency of the data ( observed and predicted) or actual data (e.g wind speed, temperature) ?

I hope you understood my question. Thank you!