diff --git a/src/Phpml/Dataset/ArrayDataset.php b/src/Phpml/Dataset/ArrayDataset.php
index d117122..7c5c2b5 100644
--- a/src/Phpml/Dataset/ArrayDataset.php
+++ b/src/Phpml/Dataset/ArrayDataset.php
@@ -27,7 +27,7 @@ class ArrayDataset implements Dataset
     public function __construct(array $samples, array $labels)
     {
         if (count($samples) != count($labels)) {
-            throw InvalidArgumentException::sizeNotMatch();
+            throw InvalidArgumentException::arraySizeNotMatch();
         }
 
         $this->samples = $samples;
diff --git a/src/Phpml/Exception/InvalidArgumentException.php b/src/Phpml/Exception/InvalidArgumentException.php
index 48006fa..428f637 100644
--- a/src/Phpml/Exception/InvalidArgumentException.php
+++ b/src/Phpml/Exception/InvalidArgumentException.php
@@ -9,9 +9,9 @@ class InvalidArgumentException extends \Exception
     /**
      * @return InvalidArgumentException
      */
-    public static function sizeNotMatch()
+    public static function arraySizeNotMatch()
     {
-        return new self('Size of given arguments not match');
+        return new self('Size of given arrays not match');
     }
 
     /**
diff --git a/src/Phpml/Metric/Accuracy.php b/src/Phpml/Metric/Accuracy.php
index 3ad806d..0565ead 100644
--- a/src/Phpml/Metric/Accuracy.php
+++ b/src/Phpml/Metric/Accuracy.php
@@ -20,7 +20,7 @@ class Accuracy
     public static function score(array $actualLabels, array $predictedLabels, bool $normalize = true)
     {
         if (count($actualLabels) != count($predictedLabels)) {
-            throw InvalidArgumentException::sizeNotMatch();
+            throw InvalidArgumentException::arraySizeNotMatch();
         }
 
         $score = 0;
diff --git a/src/Phpml/Metric/Distance/Chebyshev.php b/src/Phpml/Metric/Distance/Chebyshev.php
index 8146e4d..0dab5e8 100644
--- a/src/Phpml/Metric/Distance/Chebyshev.php
+++ b/src/Phpml/Metric/Distance/Chebyshev.php
@@ -20,7 +20,7 @@ class Chebyshev implements Distance
     public function distance(array $a, array $b): float
     {
         if (count($a) !== count($b)) {
-            throw InvalidArgumentException::sizeNotMatch();
+            throw InvalidArgumentException::arraySizeNotMatch();
         }
 
         $differences = [];
diff --git a/src/Phpml/Metric/Distance/Euclidean.php b/src/Phpml/Metric/Distance/Euclidean.php
index 09d17c2..da3d2e3 100644
--- a/src/Phpml/Metric/Distance/Euclidean.php
+++ b/src/Phpml/Metric/Distance/Euclidean.php
@@ -20,7 +20,7 @@ class Euclidean implements Distance
     public function distance(array $a, array $b): float
     {
         if (count($a) !== count($b)) {
-            throw InvalidArgumentException::sizeNotMatch();
+            throw InvalidArgumentException::arraySizeNotMatch();
         }
 
         $distance = 0;
diff --git a/src/Phpml/Metric/Distance/Manhattan.php b/src/Phpml/Metric/Distance/Manhattan.php
index a284993..f69dc42 100644
--- a/src/Phpml/Metric/Distance/Manhattan.php
+++ b/src/Phpml/Metric/Distance/Manhattan.php
@@ -20,7 +20,7 @@ class Manhattan implements Distance
     public function distance(array $a, array $b): float
     {
         if (count($a) !== count($b)) {
-            throw InvalidArgumentException::sizeNotMatch();
+            throw InvalidArgumentException::arraySizeNotMatch();
         }
 
         $distance = 0;
diff --git a/src/Phpml/Metric/Distance/Minkowski.php b/src/Phpml/Metric/Distance/Minkowski.php
index b8ec0ef..c014252 100644
--- a/src/Phpml/Metric/Distance/Minkowski.php
+++ b/src/Phpml/Metric/Distance/Minkowski.php
@@ -33,7 +33,7 @@ class Minkowski implements Distance
     public function distance(array $a, array $b): float
     {
         if (count($a) !== count($b)) {
-            throw InvalidArgumentException::sizeNotMatch();
+            throw InvalidArgumentException::arraySizeNotMatch();
         }
 
         $distance = 0;