{"id":393,"date":"2013-01-25T13:45:18","date_gmt":"2013-01-25T12:45:18","guid":{"rendered":"https:\/\/samovar2022.int-evry.fr\/index.php\/2013\/01\/25\/seminaire-samovar-les-motifs-correles-frequents\/"},"modified":"2020-09-04T18:46:58","modified_gmt":"2020-09-04T16:46:58","slug":"seminaire-samovar-les-motifs-correles-frequents","status":"publish","type":"post","link":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/2013\/01\/25\/seminaire-samovar-les-motifs-correles-frequents\/","title":{"rendered":"S\u00e9minaire SAMOVAR : \u00ab\u00a0Les motifs corr\u00e9l\u00e9s fr\u00e9quents\u00a0\u00bb"},"content":{"rendered":"<p><strong>Sadok Ben Yahia<\/strong>, Professeur \u00e0 l\u2019Universit\u00e9 El Manar (Tunisie) et chercheur associ\u00e9 SAMOVAR, donnera un s\u00e9minaire ACMES\/SAMOVAR <\/p>\n<p>le <strong>4 f\u00e9vrier<\/strong> 2013 \u00e0 10h30 en salle BL004.<\/p>\n<p>Titre : Les motifs corr\u00e9l\u00e9s fr\u00e9quents<\/p>\n<p>R\u00e9sum\u00e9 :<\/p>\n<p>Dans le cadre de la fouille de r\u00e8gles d\u2019association, la notion de corr\u00e9lation entre items a \u00e9t\u00e9 adopt\u00e9e afin de restreindre le nombre de motifs g\u00e9n\u00e9r\u00e9s et ne garder qu\u2019un certain nombre de r\u00e8gles int\u00e9ressantes. Cette notion se base principalement sur les mesures de corr\u00e9lation et les techniques d\u2019extraction s\u2019y appuyant. Elle permet d\u2019am\u00e9liorer la qualit\u00e9 des motifs extraits en donnant une information plus compl\u00e8te sur la corr\u00e9lation entre les items. Cependant, elle engendre de nouveaux probl\u00e8mes \u00e0 savoir le choix de la mesure de corr\u00e9lation et la r\u00e9duction du co\u00fbt d\u2019extraction des motifs corr\u00e9l\u00e9s.<\/p>\n<p>Dans ce s\u00e9minaire, nous menons une \u00e9tude critique des propri\u00e9t\u00e9s structurelles des mesures de corr\u00e9lation d\u2019items. Ensuite, l\u2019exploitation de la propri\u00e9t\u00e9 de non-injectivit\u00e9 de tout op\u00e9rateur de fermeture, nous m\u00e8nera \u00e0 la proposition d\u2019une repr\u00e9sentation concise exacte des motifs corr\u00e9l\u00e9s fr\u00e9quents v\u00e9rifiant la mesure de corr\u00e9lation Bond. A la fin, nous balisons le terrain pour les travaux futurs sur la combinaison de deux contraintes de natures diff\u00e9rentes, corr\u00e9l\u00e9 \u00ab induisant un id\u00e9al d\u2019ordre \u00bb et rare \u00ab induisant un filtre d\u2019ordre \u00bb.<\/p>\n<hr \/>\n","protected":false},"excerpt":{"rendered":"<p>Sadok Ben Yahia, Professeur \u00e0 l\u2019Universit\u00e9 El Manar (Tunisie) et chercheur associ\u00e9 SAMOVAR, donnera un s\u00e9minaire ACMES\/SAMOVAR le 4 f\u00e9vrier 2013 \u00e0 10h30 en salle BL004. Titre : Les motifs corr\u00e9l\u00e9s fr\u00e9quents R\u00e9sum\u00e9 : Dans le cadre de la fouille de r\u00e8gles d\u2019association, la notion de corr\u00e9lation entre items a \u00e9t\u00e9 adopt\u00e9e afin de restreindre [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":392,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"on","ocean_gallery_id":[],"footnotes":""},"categories":[398],"tags":[],"class_list":["post-393","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seminaires-transversaux-fr","entry","has-media"],"_links":{"self":[{"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/posts\/393","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/comments?post=393"}],"version-history":[{"count":1,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/posts\/393\/revisions"}],"predecessor-version":[{"id":1872,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/posts\/393\/revisions\/1872"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/media\/392"}],"wp:attachment":[{"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/media?parent=393"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/categories?post=393"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/tags?post=393"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}