{"id":1631,"date":"2023-07-25T14:26:50","date_gmt":"2023-07-25T14:26:50","guid":{"rendered":"https:\/\/statorials.org\/id\/kecil-di-sungai\/"},"modified":"2023-07-25T14:26:50","modified_gmt":"2023-07-25T14:26:50","slug":"kecil-di-sungai","status":"publish","type":"post","link":"https:\/\/statorials.org\/id\/kecil-di-sungai\/","title":{"rendered":"Cara menghitung smape di r"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><strong>Symmetric Mean Absolute Percentage Error (SMAPE)<\/strong> digunakan untuk mengukur akurasi prediksi model. Ini dihitung sebagai berikut:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>SMAPE<\/strong> = (1\/n) * \u03a3(|perkiraan \u2013 aktual| \/ ((|aktual| + |perkiraan|)\/2) * 100<\/span><\/p>\n<p> <span style=\"color: #000000;\">Emas:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>\u03a3<\/strong> \u2013 simbol yang berarti \u201cjumlah\u201d<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>n<\/strong> \u2013 ukuran sampel<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>nyata<\/strong> \u2013 nilai sebenarnya dari data<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>perkiraan<\/strong> \u2013 nilai yang diharapkan dari data<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Semakin kecil nilai SMAPE maka semakin baik akurasi prediksi suatu model.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Tutorial ini menjelaskan dua metode berbeda yang dapat Anda gunakan untuk menghitung SMAPE di R.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Metode 1: Gunakan smape() dari paket Metrics<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Salah satu cara menghitung SMAPE di R adalah dengan menggunakan fungsi <strong>smape()<\/strong> dari paket <strong>Metrics<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #993300;\">library<\/span> (Metrics)\n\n<span style=\"color: #008080;\">#define actual values\n<\/span>actual &lt;- c(12, 13, 14, 15, 15, 22, 27)\n\n<span style=\"color: #008080;\">#define forecasted values\n<\/span>forecast &lt;- c(11, 13, 14, 14, 15, 16, 18)\n\n<span style=\"color: #008080;\">#calculate SMAPE\n<\/span>smape(actual, forecast)\n\n[1] 0.1245302\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Kita dapat melihat bahwa persentase kesalahan absolut rata-rata simetris untuk model ini adalah <strong>12,45%<\/strong> .<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Metode 2: Tulis fungsi Anda sendiri<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Cara lain untuk menghitung SMAPE adalah dengan membuat fungsi kita sendiri sebagai berikut:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>find_smape &lt;- <span style=\"color: #993300;\">function<\/span> (a, f) {\n  <span style=\"color: #3366ff;\">return<\/span> ( <span style=\"color: #008000;\">1<\/span> \/length(a) * sum( <span style=\"color: #008000;\">2<\/span> *abs(fa) \/ (abs(a)+abs(f))* <span style=\"color: #008000;\">100<\/span> ))\n}\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Kita kemudian dapat menggunakan fungsi ini untuk menghitung SMAPE antara vektor nilai aktual dan nilai prediksi:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define actual values\n<\/span>actual &lt;- c(12, 13, 14, 15, 15,22, 27)\n\n<span style=\"color: #008080;\">#define forecasted values\n<\/span>forecast &lt;- c(11, 13, 14, 14, 15, 16, 18)\n\n<span style=\"color: #008080;\">#calculate SMAPE\n<\/span>find_smape(actual, forecast)\n\n[1] 12.45302<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Sekali lagi, SMAPE-nya ternyata <strong>12,45%<\/strong> , yang sesuai dengan hasil contoh sebelumnya.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Sumber daya tambahan<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/id\/kartu-r\/\" target=\"_blank\" rel=\"noopener\">Cara menghitung MAPE di R<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/berarti-kesalahan-absolut-di-r\/\" target=\"_blank\" rel=\"noopener\">Cara menghitung MAD di R<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/berarti-kesalahan-absolut-di-r\/\" target=\"_blank\" rel=\"noopener\">Cara menghitung MAE di R<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/cara-menghitung-rmse-di-r\/\" target=\"_blank\" rel=\"noopener\">Cara menghitung RMSE di R<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/cara-menghitung-mse-di-r\/\" target=\"_blank\" rel=\"noopener\">Cara menghitung UMK di R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Symmetric Mean Absolute Percentage Error (SMAPE) digunakan untuk mengukur akurasi prediksi model. Ini dihitung sebagai berikut: SMAPE = (1\/n) * \u03a3(|perkiraan \u2013 aktual| \/ ((|aktual| + |perkiraan|)\/2) * 100 Emas: \u03a3 \u2013 simbol yang berarti \u201cjumlah\u201d n \u2013 ukuran sampel nyata \u2013 nilai sebenarnya dari data perkiraan \u2013 nilai yang diharapkan dari data Semakin kecil [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Cara menghitung SMAPE di R - Statologi<\/title>\n<meta name=\"description\" content=\"Tutorial ini menjelaskan cara menghitung Symmetric Mean Absolute Percentage Error (SMAPE) di R, termasuk contohnya.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/id\/kecil-di-sungai\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cara menghitung SMAPE di R - Statologi\" \/>\n<meta property=\"og:description\" content=\"Tutorial ini menjelaskan cara menghitung Symmetric Mean Absolute Percentage Error (SMAPE) di R, termasuk contohnya.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/id\/kecil-di-sungai\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-25T14:26:50+00:00\" \/>\n<meta name=\"author\" content=\"Benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Ditulis oleh\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimasi waktu membaca\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 menit\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/id\/kecil-di-sungai\/\",\"url\":\"https:\/\/statorials.org\/id\/kecil-di-sungai\/\",\"name\":\"Cara menghitung SMAPE di R - Statologi\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/id\/#website\"},\"datePublished\":\"2023-07-25T14:26:50+00:00\",\"dateModified\":\"2023-07-25T14:26:50+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/3d17a1160dd2d052b7c78e502cb9ec81\"},\"description\":\"Tutorial ini menjelaskan cara menghitung Symmetric Mean Absolute Percentage Error (SMAPE) di R, termasuk contohnya.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/id\/kecil-di-sungai\/#breadcrumb\"},\"inLanguage\":\"id\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/id\/kecil-di-sungai\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/id\/kecil-di-sungai\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/statorials.org\/id\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Cara menghitung smape di r\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/id\/#website\",\"url\":\"https:\/\/statorials.org\/id\/\",\"name\":\"Statorials\",\"description\":\"Panduan anda untuk kompetensi statistik!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/id\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"id\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/3d17a1160dd2d052b7c78e502cb9ec81\",\"name\":\"Benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"id\",\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/image\/\",\"url\":\"http:\/\/statorials.org\/id\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"http:\/\/statorials.org\/id\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin anderson\"},\"description\":\"Halo, saya Benjamin, pensiunan profesor statistika yang menjadi guru Statorial yang berdedikasi. 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