Java svm uses faster `Math.pow` instead of `powi` #109

Druid-of-Luhn · 2017-11-17T10:54:17Z

Using the built-in Math.pow method instead of svm's custom powi. This makes the code faster.

I checked this by sampling svm prediction with jvisualvm. powi used to take about 8-10% of the CPU time (with Kernel.dot taking 66-73%). After changing it to Math.pow the time it takes is negligible.

Using the built-in Math.pow method instead of svm's custom powi. This makes the code faster.

Java svm uses faster Math.pow instead of powi

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Using the built-in Math.pow method instead of svm's custom powi. This makes the code faster.

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Java svm uses faster `Math.pow` instead of `powi` #109

Java svm uses faster `Math.pow` instead of `powi` #109

Druid-of-Luhn commented Nov 17, 2017

Java svm uses faster Math.pow instead of powi #109

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Java svm uses faster Math.pow instead of powi #109

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Druid-of-Luhn commented Nov 17, 2017

Java svm uses faster `Math.pow` instead of `powi` #109

Java svm uses faster `Math.pow` instead of `powi` #109