php-ai / php-ml

src/Preprocessing/ColumnFilter.php

Spacing +2 added lines, -2 removed lines

@@ -18,10 +18,10 @@
 
     public function __construct(array $datasetColumns, array $filterColumns)
     {
-        $this->datasetColumns = array_map(static function (string $column): string {
+        $this->datasetColumns = array_map(static function(string $column): string {
             return $column;
         }, $datasetColumns);
-        $this->filterColumns = array_map(static function (string $column): string {
+        $this->filterColumns = array_map(static function(string $column): string {
             return $column;
         }, $filterColumns);
     }

src/FeatureUnion.php

Spacing +1 added lines, -1 removed lines

@@ -22,7 +22,7 @@
             throw new InvalidArgumentException('At least one pipeline is required');
         }
 
-        $this->pipelines = array_map(static function (Pipeline $pipeline): Pipeline {
+        $this->pipelines = array_map(static function(Pipeline $pipeline): Pipeline {
             return $pipeline;
         }, $pipelines);
     }

src/Pipeline.php

Spacing +1 added lines, -1 removed lines

@@ -23,7 +23,7 @@
      */
     public function __construct(array $transformers, ?Estimator $estimator = null)
     {
-        $this->transformers = array_map(static function (Transformer $transformer): Transformer {
+        $this->transformers = array_map(static function(Transformer $transformer): Transformer {
             return $transformer;
         }, $transformers);
         $this->estimator = $estimator;

src/Math/Matrix.php

Spacing +1 added lines, -1 removed lines

@@ -126,7 +126,7 @@
     public function transpose(): self
     {
         if ($this->rows === 1) {
-            $matrix = array_map(static function ($el): array {
+            $matrix = array_map(static function($el): array {
                 return [$el];
             }, $this->matrix[0]);
         } else {

src/Math/Statistic/ANOVA.php

Spacing +5 added lines, -5 removed lines

@@ -28,7 +28,7 @@ 
             throw new InvalidArgumentException('The array must have at least 2 elements');
         }
 
-        $samplesPerClass = array_map(static function (array $class): int {
+        $samplesPerClass = array_map(static function(array $class): int {
             return count($class);
         }, $samples);
         $allSamples = (int) array_sum($samplesPerClass);
@@ -41,10 +41,10 @@ 
         $dfbn = $classes - 1;
         $dfwn = $allSamples - $classes;
 
-        $msb = array_map(static function ($s) use ($dfbn) {
+        $msb = array_map(static function($s) use ($dfbn) {
             return $s / $dfbn;
         }, $ssbn);
-        $msw = array_map(static function ($s) use ($dfwn) {
+        $msw = array_map(static function($s) use ($dfwn) {
             if ($dfwn === 0) {
                 return 1;
             }
@@ -76,7 +76,7 @@ 
 
     private static function sumOfFeaturesPerClass(array $samples): array
     {
-        return array_map(static function (array $class): array {
+        return array_map(static function(array $class): array {
             $sum = array_fill(0, count($class[0]), 0);
             foreach ($class as $sample) {
                 foreach ($sample as $index => $feature) {
@@ -97,7 +97,7 @@ 
             }
         }
 
-        return array_map(static function ($sum) {
+        return array_map(static function($sum) {
             return $sum ** 2;
         }, $squares);
     }

src/Math/Statistic/StandardDeviation.php

Spacing +1 added lines, -1 removed lines

@@ -50,7 +50,7 @@
         $mean = Mean::arithmetic($numbers);
 
         return array_sum(array_map(
-            static function ($val) use ($mean): float {
+            static function($val) use ($mean): float {
                 return ($val - $mean) ** 2;
             },
             $numbers

src/FeatureSelection/VarianceThreshold.php

Spacing +1 added lines, -1 removed lines

@@ -37,7 +37,7 @@
 
     public function fit(array $samples, ?array $targets = null): void
     {
-        $this->variances = array_map(static function (array $column): float {
+        $this->variances = array_map(static function(array $column): float {
             return Variance::population($column);
         }, Matrix::transposeArray($samples));
 

src/Tree/Node/DecisionNode.php

Spacing +1 added lines, -1 removed lines

@@ -50,7 +50,7 @@
         $this->value = $value;
         $this->groups = $groups;
         $this->impurity = $impurity;
-        $this->samplesCount = (int) array_sum(array_map(static function (array $group): int {
+        $this->samplesCount = (int) array_sum(array_map(static function(array $group): int {
             return count($group[0]);
         }, $groups));
     }

src/Clustering/FuzzyCMeans.php

Spacing +1 added lines, -1 removed lines

@@ -139,7 +139,7 @@
                 $total += $val;
             }
 
-            $this->membership[] = array_map(static function ($val) use ($total): float {
+            $this->membership[] = array_map(static function($val) use ($total): float {
                 return $val / $total;
             }, $row);
         }