幫助，我的代碼中出現錯誤“ErrorException (E_NOTICE) Undefined variable: actualLabels”$title = "Data Confusion Matrix";$testing_data = DataTesting::count();$klasifikasi = Klasifikasi::with('sentimen')->get();foreach($klasifikasi as $kelas){ $predictedLabels[] = $kelas->sentimen->kategori; $testing = DataTesting::where('id_testing',$kelas->id_testing)->first(); $twitter = TwitterStream::with('sentimen')->where('id_crawling',$testing->id_crawling)->first(); $actualLabels[] = $twitter->sentimen->kategori; } $getPrecision = new ControllerConfusionMatrix($actualLabels, $predictedLabels); $accuracy = ControllerConfusionMatrix::score($actualLabels, $predictedLabels); $recall = $getPrecision->getRecall(); $precision = $getPrecision->getPrecision();
2 回答
胡子哥哥
TA貢獻1825條經驗 獲得超6個贊
將此行添加到代碼的開頭：$actualLabels = []; 您收到錯誤，因為當$klasifikasi為空時，則不會執行循環內的語句。所以$actualLabels沒有創建變量。在這種情況下，您會得到(E_NOTICE) Undefined variable: actualLabels. 希望你能理解。
互換的青春
TA貢獻1797條經驗 獲得超6個贊
定義Array()
$predictedLabels = array();
$actualLabels = array();
foreach($klasifikasi as $kelas){
$predictedLabels[] = $kelas->sentimen->kategori;
$testing = DataTesting::where('id_testing',$kelas->id_testing)->first();
$twitter = TwitterStream::with('sentimen')->where('id_crawling',$testing->id_crawling)->first();
$actualLabels[] = $twitter->sentimen->kategori;
}
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