Exact(2)
In this work, the spread coefficients in all single-RBF networks are set as σ SRBF = 1.
In the 2M-RBF network utilized in this work, two RBF predictors (named as RBF-1 and RBF-2) are different in their spread coefficients.
Similar(58)
The performance of the method of MLP with 10-20-1 architecture, GRNN with the spread coefficient 0.7 and RBFs with the spread coefficient of 1000 and a hidden layer neuron number of 80 are found to be in good agreement, predicting the experimental pool boiling heat transfer coefficient with deviations within the range of ± 5% for all tested conditions.
In alloy bar rolling process, the component of alloyed steel influenced the spread coefficient greatly, therefore, the component influence coefficient m of different alloyed steel has been determined firstly to calculate the maximum spread.
The two datasets exhibit considerable differences with the pipe coefficient, the root distribution exponent, and the maximum root spread coefficient in particular.
for fine root distribution (w.coef) 2.4 2.1 6.2 Coarse root proportionality factor (red_coef) 2.5 3.4 0.18 Maximum root spread coefficient (max_dist_coef) 74 88 14 Error variance (var) 0.17 0.17 4.25.
After rescaling x ~, we can obtain estimation value g ~, as well the spread coefficient S D [i,θ] corresponding to the dictionary.
Therefore, by changing the spread coefficient, the network can be adjusted to fit different segments of sea clutter series with different average data distances.
The spread coefficient of each RBF predictors in 2M-RBF network is set as σ MMRBF1 = 1 and σ MMRBF2 = 10, respectively.
As shown in Fig. 18, in this segment the output of 2M-RBF is identical to that of single-RBF since the spread coefficient of RBF-1 is equal to that of the single-RBF network.
The spread coefficient is a variance parameter in the nonlinear transfer function in an RBF network and can be set as a multiple of the average distance between data points considered in the fitting process [18].
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