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Change floatvar to float casting (up to 6 times faster)
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@ -32,7 +32,7 @@ class TfIdfTransformer implements Transformer
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$count = count($samples);
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foreach ($this->idf as &$value) {
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$value = log(floatval($count / $value), 10.0);
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$value = log((float)($count / $value), 10.0);
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}
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}
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@ -78,7 +78,7 @@ class Normalizer implements Preprocessor
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foreach ($sample as $feature) {
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$norm2 += $feature * $feature;
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}
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$norm2 = sqrt(floatval($norm2));
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$norm2 = sqrt((float)$norm2);
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if (0 == $norm2) {
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$sample = array_fill(0, count($sample), 1);
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