{"id":2212,"date":"2017-10-14T23:20:50","date_gmt":"2017-10-15T02:20:50","guid":{"rendered":"http:\/\/www.geekosas.com\/?p=2212"},"modified":"2017-10-14T23:22:53","modified_gmt":"2017-10-15T02:22:53","slug":"sparse-matrix-en-r","status":"publish","type":"post","link":"https:\/\/geekosas.com\/index.php\/es\/2017\/10\/14\/sparse-matrix-en-r\/","title":{"rendered":"Sparse Matrix en R"},"content":{"rendered":"

Los valores 0 en las matrices son muy frecuentes, en especial en las variables dummy, por lo que\u00a0en R existe un paquete llamado Matrix el cual permite crear matrices sparse, en otras palabras, matrices que no utilizan memoria cuando el valor de un elemento es 0.<\/p>\n

Pero el poder saltarse los 0, es complejo a nivel computacional, por lo que no siempre es conveniente utilizar sparse matrix, esto lo veremos en los siguientes resultados donde realizamos distintas mediciones:<\/p>\n

Uso de Memoria<\/strong><\/p>\n

\"\"<\/p>\n

Tiempo en M^2<\/strong><\/p>\n

\"\"<\/p>\n

Descomposici\u00f3n SVD<\/strong><\/p>\n

\"\"<\/p>\n

Como pueden ver, en general conviene utilizar sparse matrix desde el 40% de 0, antes de eso, solo utilizar\u00e1 mas memoria y mas CPU.<\/p>\n

El c\u00f3digo con el que se realiz\u00f3 el experimento est\u00e1 en: https:\/\/github.com\/danielfm123\/R_matrix_benchmark<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Los valores 0 en las matrices son muy frecuentes, en especial en las variables dummy, por lo que\u00a0en R existe un paquete llamado Matrix el […]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":2217,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[],"class_list":["post-2212","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sin-categoria"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/geekosas.com\/wp-content\/uploads\/2017\/10\/matrix.png?fit=345%2C190&ssl=1","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8vjqF-zG","jetpack-related-posts":[{"id":2220,"url":"https:\/\/geekosas.com\/index.php\/es\/2017\/10\/15\/r-vs-ms-open-r\/","url_meta":{"origin":2212,"position":0},"title":"R vs MS open R","author":"Daniel Fischer","date":"2017-10-15","format":false,"excerpt":"Microsoft se ha dado cuenta del poder de R, por lo que la ha integrado a sus sistemas, incluido Power BI y SQL Server 2017, Microsoft sac\u00f3 una versi\u00f3n de R gratuita con algunas mejoras, entre ellas est\u00e1n la conecci\u00f3n nativa SQL Server, versionamiento de paquetes en MRAN (Microsoft Cran)\u2026","rel":"","context":"In "Sin categor\u00eda"","block_context":{"text":"Sin categor\u00eda","link":"https:\/\/geekosas.com\/index.php\/category\/sin-categoria\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.geekosas.com\/wp-content\/uploads\/2017\/10\/lm-1024x932.png?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.geekosas.com\/wp-content\/uploads\/2017\/10\/lm-1024x932.png?resize=350%2C200 1x, https:\/\/i0.wp.com\/www.geekosas.com\/wp-content\/uploads\/2017\/10\/lm-1024x932.png?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.geekosas.com\/wp-content\/uploads\/2017\/10\/lm-1024x932.png?resize=700%2C400 2x"},"classes":[]},{"id":2639,"url":"https:\/\/geekosas.com\/index.php\/es\/2019\/02\/12\/r-y-pc-superdorerosos\/","url_meta":{"origin":2212,"position":1},"title":"R y PC super-porerosos","author":"Daniel Fischer","date":"2019-02-12","format":false,"excerpt":"R y python est\u00e1n muy de moda \u00faltimamente, pero te haz preguntado si le est\u00e1s sacan totalmente el jugo a esos lenguajes, es m\u00e1s, seguramente para trabajar con ellos tienes un PC super-poderoso, bueno, la verdad es que si est\u00e1s entrando al mundo del Analytics, posiblemente aun no lo est\u00e9s\u2026","rel":"","context":"In "Sin categor\u00eda"","block_context":{"text":"Sin categor\u00eda","link":"https:\/\/geekosas.com\/index.php\/category\/sin-categoria\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/geekosas.com\/wp-content\/uploads\/2019\/02\/2922898-a.jpg?fit=350%2C350&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2771,"url":"https:\/\/geekosas.com\/index.php\/es\/2020\/04\/07\/comparativa-entre-julia-python-y-r\/","url_meta":{"origin":2212,"position":2},"title":"Comparativa entre Julia, Python y R","author":"Daniel Fischer","date":"2020-04-07","format":false,"excerpt":"La discusi\u00f3n sobre que lenguaje es el mejor para analizar datos puede llevarnos a conversaciones mas apasionadas que por temas como religi\u00f3n o pol\u00edtica. 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