New method: scores and rewrite score

Author: AntoineAugusti

src/Antoineaugusti/LaravelSentimentAnalysis/SentimentAnalysis.php

@@ -39,15 +39,34 @@ public function decision($string)
 		}
 	}
 
+	/**
+	 * Get scores for each decision
+	 * @param  string $string The original string
+	 * @return array  An array containing keys 'negative', 'neutral' and 'positive' with a float. The closer to 1, the better
+	 * @example ['negative' => 0.5, 'neutral' => 0.25, 'positive' => 0.25]
+	 */
+	public function scores($string)
+	{
+		$scores = $this->sentiment->score($string);
+		$array = array();
+
+		// The original keys are 'neg' / 'neu' / 'pos'
+		// We will remap to 'negative' / 'neutral' / 'positive' and round with 2 digits
+		foreach ([self::NEGATIVE, self::NEUTRAL, self::POSITIVE] as $value)
+			$array[$value] = round($scores[substr($value, 0, 3)], 2);
+		
+		return $array;
+	}
+
 	/**
 	 * Get the confidence of a decision for a result. The closer to 1, the better
 	 * @param  string $string The given sentence
 	 * @return float The confidence of a decision for a result. The close to 1, the better
 	 */
 	public function score($string)
 	{
-		$scores = $this->sentiment->score($string);
-		return $scores[$this->sentiment->categorise($string)];
+		$scores = $this->scores($string);
+		return max($scores);
 	}
 
 	/**