Gradient descent training + Added all dataset + graphs improvements

app/Services/CsvReader.php

@@ -4,7 +4,7 @@ namespace App\Services;
 
 class CsvReader {
     private $file;
-    private array $headers;
+    // private array $headers;
 
     public array $lines = [];
 
@@ -17,7 +17,7 @@ class CsvReader {
             throw new \RuntimeException("Failed to open file: " . $filename);
         }
 
-        $this->headers = $this->readNextLine();
+        // $this->headers = $this->readNextLine();
     }
 
     public function readNextLine(): ?array

app/Services/DataSetReader.php

@@ -20,7 +20,17 @@ class DataSetReader {
     private function readEntireFile(CsvReader $reader): void
     {
         while ($line = $reader->readNextLine()) {
-            $this->lines[] = $line;
+            $newLine = [];
+            foreach ($line as $value) { // Transform to float
+                $newLine[] = (float) $value;
+            }
+
+            // if the dataset is for regression, we add a fake label of 0
+            if (count($newLine) === 2) {
+                $newLine[] = 0.0;
+            }
+
+            $this->lines[] = $newLine;
         }
     }
 
@@ -31,12 +41,21 @@ class DataSetReader {
         }
         $randomNumber = array_rand($this->currentLines);
         $randomLine = $this->currentLines[$randomNumber];
+
         // Remove the line from the current lines to avoid repetition
         unset($this->currentLines[$randomNumber]);
+
+        // Remember the index of the last read line in the full list
         $this->lastReadLineIndex = array_search($randomLine, $this->lines, true);
+
         return $randomLine;
     }
 
+    public function getInputSize(): int
+    {
+        return count($this->lines[0]) - 1; // Don't count the label
+    }
+
     public function reset(): void
     {
         $this->currentLines = $this->lines;