{"id":4619,"date":"2023-07-09T14:23:19","date_gmt":"2023-07-09T14:23:19","guid":{"rendered":"https:\/\/statorials.org\/pt\/cluster-de-proc-sas\/"},"modified":"2023-07-09T14:23:19","modified_gmt":"2023-07-09T14:23:19","slug":"cluster-de-proc-sas","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/cluster-de-proc-sas\/","title":{"rendered":"Como usar proc cluster em sas (com exemplo)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><strong>Clustering<\/strong> \u00e9 uma t\u00e9cnica de aprendizado de m\u00e1quina que tenta encontrar grupos de <a href=\"https:\/\/statorials.org\/pt\/observacao-em-estatisticas\/\" target=\"_blank\" rel=\"noopener noreferrer\">observa\u00e7\u00f5es<\/a> dentro de um conjunto de dados.<\/span><\/p>\n<p> <span style=\"color: #000000;\">O objetivo \u00e9 encontrar clusters tais que as observa\u00e7\u00f5es dentro de cada cluster sejam bastante semelhantes entre si, enquanto as observa\u00e7\u00f5es em diferentes clusters sejam bastante diferentes umas das outras.<\/span><\/p>\n<p> <span style=\"color: #000000;\">A maneira mais f\u00e1cil de fazer clustering no SAS \u00e9 usar <strong>PROC CLUSTER<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">O exemplo a seguir mostra como usar <strong>PROC CLUSTER<\/strong> na pr\u00e1tica.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo: como usar PROC CLUSTER em SAS<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Digamos que temos o seguinte conjunto de dados contendo informa\u00e7\u00f5es sobre pontos, assist\u00eancias e rebotes de 20 jogadores de basquete diferentes:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">\/*create dataset*\/             \n<span style=\"color: #800080;\">data<\/span><\/span> my_data;\n    <span style=\"color: #3366ff;\">input<\/span> points assists rebounds;   \n    <span style=\"color: #3366ff;\">datalines<\/span> ;\n18 3 15\n20 3 14\n19 4 14\n14 5 10\n14 4 8\n15 7 14\n20 8 13\n28 7 9\n30 6 5\n31 9 4\n35 12 11\n33 14 6\n29 9 5\n25 9 5\n25 4 3\n27 3 8\n29 4 12\n30 12 7\n19 5 6\n23 11 5\n;\n<span style=\"color: #800080;\">run<\/span> ;\n\n<span style=\"color: #008000;\">\/*view dataset*\/ \n<\/span><span style=\"color: #800080;\">proc print<\/span> <span style=\"color: #3366ff;\">data<\/span> =my_data;\n<\/strong><\/span><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-36039 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/clusters0.png\" alt=\"\" width=\"312\" height=\"513\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Digamos que queremos fazer alguns agrupamentos para tentar identificar \u201cgrupos\u201d de jogadores com estat\u00edsticas semelhantes entre si.<\/span><\/p>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como usar <strong>PROC CLUSTER<\/strong> no SAS para realizar clustering:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">\/*perform clustering using points, assists and rebounds variables*\/             \n<span style=\"color: #000000;\"><span style=\"color: #800080;\">proc cluster<\/span> <span style=\"color: #3366ff;\">data<\/span> =my_data <span style=\"color: #3366ff;\">method<\/span> =average;<\/span>\n<span style=\"color: #000000;\"><span style=\"color: #3366ff;\">var<\/span> points assists rebounds;<\/span>\n<span style=\"color: #000000;\"><span style=\"color: #800080;\">run<\/span> ;<\/span>\n<\/span><\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">As primeiras tabelas do resultado fornecem informa\u00e7\u00f5es sobre como foi realizado o agrupamento:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-36033 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/clusters1.png\" alt=\"\" width=\"342\" height=\"728\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Um dendograma tamb\u00e9m \u00e9 produzido para que possamos inspecionar visualmente a semelhan\u00e7a entre as observa\u00e7\u00f5es no conjunto de dados:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-36034 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/clusters2.png\" alt=\"\" width=\"584\" height=\"439\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">O eixo y mostra observa\u00e7\u00f5es individuais e o eixo x mostra a dist\u00e2ncia m\u00e9dia entre os clusters.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Olhando para este dendograma, parece que as observa\u00e7\u00f5es se enquadram naturalmente em tr\u00eas grupos:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-36035\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/clusters3.png\" alt=\"Exemplo de SAS PROC CLUSTER\" width=\"573\" height=\"423\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Podemos ent\u00e3o usar a instru\u00e7\u00e3o <strong>PROC TREE<\/strong> com <strong>ncl=3<\/strong> para dizer ao SAS para atribuir cada observa\u00e7\u00e3o no conjunto de dados original a um dos tr\u00eas clusters:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">\/*assign each observation to one of three clusters*\/\n<\/span><span style=\"color: #800080;\">proc tree<\/span> <span style=\"color: #3366ff;\">data<\/span> =clustd <span style=\"color: #3366ff;\">noprint ncl<\/span> =3 <span style=\"color: #3366ff;\">out<\/span> =clusts;\n    <span style=\"color: #3366ff;\">copy<\/span> points assists rebounds;\n    <span style=\"color: #3366ff;\">id<\/span> player_ID;\n<span style=\"color: #800080;\">run<\/span> ;\n<span style=\"color: #800080;\">proc sort<\/span> ;\n   <span style=\"color: #3366ff;\">by<\/span> cluster;\n<span style=\"color: #800080;\">run<\/span> ;\n\n<span style=\"color: #008000;\">\/*view cluster assignments*\/\n<\/span><span style=\"color: #800080;\">proc print<\/span> <span style=\"color: #3366ff;\">data<\/span> = clusters;\n    <span style=\"color: #3366ff;\">id<\/span> player_ID;\n<span style=\"color: #800080;\">run<\/span> ;<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">O conjunto de dados resultante mostra cada uma das observa\u00e7\u00f5es originais junto com o cluster ao qual pertencem:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-36036 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/clusters4.png\" alt=\"\" width=\"415\" height=\"489\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Por exemplo, podemos ver: que os jogadores<\/span> <span style=\"color: #000000;\">com IDs 2, 3, 1, 4, 5, 7, 6 e 19 pertencem todos ao cluster <strong>1<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Isso nos diz que esses oito jogadores s\u00e3o \u201csemelhantes\u201d em termos de vari\u00e1veis de pontos, assist\u00eancias e rebotes.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Nota<\/strong> : Para este exemplo, optamos por usar <strong>a m\u00e9dia<\/strong> como m\u00e9todo de vincula\u00e7\u00e3o para clustering. Consulte a <a href=\"https:\/\/documentation.sas.com\/doc\/en\/pgmsascdc\/9.4_3.4\/statug\/statug_cluster_syntax01.htm\" target=\"_blank\" rel=\"noopener\">documenta\u00e7\u00e3o do SAS<\/a> para obter uma lista completa de outros m\u00e9todos de liga\u00e7\u00e3o que voc\u00ea pode usar.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Os tutoriais a seguir explicam como executar outras tarefas comuns no SAS:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/pt\/analise-de-componentes-principais-em-sas\/\" target=\"_blank\" rel=\"noopener\">Como realizar an\u00e1lise de componentes principais no SAS<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/regressao-linear-multipla-em-sas\/\" target=\"_blank\" rel=\"noopener\">Como realizar regress\u00e3o linear m\u00faltipla no SAS<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/regressao-logistica-em-airlock\/\" target=\"_blank\" rel=\"noopener\">Como realizar regress\u00e3o log\u00edstica no SAS<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Clustering \u00e9 uma t\u00e9cnica de aprendizado de m\u00e1quina que tenta encontrar grupos de observa\u00e7\u00f5es dentro de um conjunto de dados. O objetivo \u00e9 encontrar clusters tais que as observa\u00e7\u00f5es dentro de cada cluster sejam bastante semelhantes entre si, enquanto as observa\u00e7\u00f5es em diferentes clusters sejam bastante diferentes umas das outras. A maneira mais f\u00e1cil de [&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":[],"class_list":["post-4619","post","type-post","status-publish","format-standard","hentry","category-guia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Como usar PROC CLUSTER em SAS (com exemplo) - Estatologia<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como usar PROC CLUSTER no SAS para realizar an\u00e1lise de cluster, com um exemplo.\" \/>\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\/pt\/cluster-de-proc-sas\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como usar PROC CLUSTER em SAS (com exemplo) - Estatologia\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como usar PROC CLUSTER no SAS para realizar an\u00e1lise de cluster, com um exemplo.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/cluster-de-proc-sas\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-09T14:23:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/clusters0.png\" \/>\n<meta name=\"author\" content=\"Dr. benjamim anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr. benjamim anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pt\/cluster-de-proc-sas\/\",\"url\":\"https:\/\/statorials.org\/pt\/cluster-de-proc-sas\/\",\"name\":\"Como usar PROC CLUSTER em SAS (com exemplo) - Estatologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-09T14:23:19+00:00\",\"dateModified\":\"2023-07-09T14:23:19+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como usar PROC CLUSTER no SAS para realizar an\u00e1lise de cluster, com um exemplo.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/cluster-de-proc-sas\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/cluster-de-proc-sas\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/cluster-de-proc-sas\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como usar proc cluster em sas (com exemplo)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/pt\/#website\",\"url\":\"https:\/\/statorials.org\/pt\/\",\"name\":\"Statorials\",\"description\":\"O seu guia para a literacia estat\u00edstica!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/pt\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pt-PT\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\",\"name\":\"Dr. benjamim anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-PT\",\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/pt\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/pt\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Dr. benjamim anderson\"},\"description\":\"Ol\u00e1, sou Benjamin, um professor aposentado de estat\u00edstica que se tornou professor dedicado na Statorials. 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