{"id":12868,"date":"2022-11-01T09:47:14","date_gmt":"2022-11-01T07:47:14","guid":{"rendered":"https:\/\/dev.editura.ase.ro\/editura-ase\/?post_type=product&#038;p=12868"},"modified":"2022-11-02T13:24:50","modified_gmt":"2022-11-02T11:24:50","slug":"data-mining-in-mediul-r-teorie-si-aplicatii","status":"publish","type":"product","link":"https:\/\/dev.editura.ase.ro\/editura-ase\/product\/data-mining-in-mediul-r-teorie-si-aplicatii\/","title":{"rendered":"Data Mining \u00een mediul R. Teorie \u0219i aplica\u021bii"},"content":{"rendered":"<p>Procedura recunoscut\u0103 sub denumirea de <em>Data Mining<\/em> se poate defini, \u00een sens larg, drept o activitate ce presupune c\u0103utarea, colectarea \u0219i analiza datelor.<\/p>\n<p>Cantit\u0103\u021bi \u00eensemnate de date pot fi colectate din surse variate, precum diverse baze de date sau site-uri web. Forma sub care sunt reg\u0103site aceste date poate fi aceea a unor corela\u021bii sau pattern-uri, iar odat\u0103 cu inova\u021biile \u0219i progresul tehnologic, extragerea acestor date a devenit din ce \u00een ce mai simpl\u0103.<\/p>\n<p>La nivel de companie sau de industrie, datele au devenit o resurs\u0103 extrem de important\u0103. Extragerea unor informa\u021bii utile din surse de date neorganizate constituie o activitate din ce \u00een ce mai popular\u0103, gra\u021bie tehnicilor actuale de <em>Data Mining<\/em>, care permite transformarea datelor primare \u00een informa\u021bii valoroase.<\/p>\n<p>Lucrarea de fa\u021b\u0103, intitulat\u0103 <em>Data Mining \u00een mediul R. Teorie \u0219i aplica\u021bii<\/em>,<br \/>\neste structurat\u0103 pe 11 capitole, fiind conceput\u0103 cu scopul de a constitui un ghid util at\u00e2t pentru cercet\u0103tori, c\u00e2t \u0219i pentru practicieni, \u00een vederea cunoa\u0219terii unor aspecte mai mult sau mai pu\u021bin analitice referitoare la domeniul <em>Data Mining<\/em>.<\/p>\n<p>Primul capitol al acestei c\u0103r\u021bi este dedicat prezent\u0103rii unei scurte introduceri \u00een latura analizei de text (<em>Text Mining<\/em>) \u0219i implement\u0103rii acesteia \u00een mediul de programare R. Ulterior, o etap\u0103 extrem de important\u0103 \u00een contextul analizei de tip <em>Text Mining<\/em>, respectiv preprocesarea datelor este detaliat\u0103 \u00een cadrul celui de-al doilea capitol. Capitolele 3 \u0219i 4 urm\u0103resc expunerea analizei de tip cluster, respectiv analizei de sentiment \u00een contextul <em>Text Mining<\/em>. \u00cen cel de-al cincilea capitol este tratat\u0103 problematica arborilor de regresie \u0219i arborilor de clasificare. Capitolul 6 este dedicat prezent\u0103rii unor metode populare \u0219i extrem de utile de <em>Data Mining<\/em>, respectiv metodelor de tip ansamblu: <em>bagging, boosting<\/em> \u0219i <em>stacking<\/em>. \u00cen cadrul celui de-al \u0219aptelea capitol este eviden\u021biat\u0103 compara\u021bia dintre metodele<br \/>\nde tip ansamblu <em>bagging<\/em> \u0219i <em>boosting<\/em>. Modelele de tip ansamblu vor fi abordate \u0219i \u00een capitolele 8, respectiv 9, \u00een contextul clasific\u0103rii, respectiv regresiei. Procedurile <em>bagging<\/em> \u0219i <em>AdaBoost<\/em> vor fi detaliate astfel at\u00e2t \u00een cazul clasific\u0103rii, c\u00e2t \u0219i \u00een contextul regresiei. Penultimul capitol urm\u0103re\u0219te detalierea construirii unor modele precum <em>C5.0, Stochastic Gradient Boosting, Bagged CART<\/em>, respectiv <em>Random Forest<\/em> \u00een mediul R, \u00een timp ce capitolul 11 expune o serie de aplica\u021bii utiliz\u00e2nd metodele de tip ansamblu, constituite pe baza unor tehnici precum: analiza \u00een componente principale (ACP), Re\u021belele Neuronale Artificiale, arborii de decizie, Random Forest sau SVM.<\/p>\n<p>\u00cen consecin\u021b\u0103, lucrarea <em>Data Mining \u00een mediul R. Teorie \u0219i aplica\u021bii<\/em> este recomandat\u0103 at\u00e2t studen\u021bilor care au \u00een planul de \u00eenv\u0103\u021b\u0103m\u00e2nt disciplinele <em>Analiza Datelor<\/em>, <em>Data Mining<\/em> sau <em>Re\u021bele neuronale artificiale (RNA)<\/em>, c\u00e2t \u0219i cercet\u0103torilor, doctoranzilor \u0219i celor interesa\u021bi de aspecte c\u00e2t mai variate legate de explorarea datelor.<\/p>\n<div class=\"_df_book df-lite\" id=\"df_12865\"  _slug=\"data-mining-in-mediul-r-teorie-si-aplicatii\" data-title=\"data-mining-in-mediul-r-teorie-si-aplicatii\" wpoptions=\"true\" thumbtype=\"\" ><\/div><script class=\"df-shortcode-script\" nowprocket type=\"application\/javascript\">window.option_df_12865 = {\"outline\":[],\"autoEnableOutline\":\"false\",\"autoEnableThumbnail\":\"false\",\"overwritePDFOutline\":\"false\",\"direction\":\"1\",\"pageSize\":\"0\",\"soundEnable\":\"false\",\"source\":\"https:\\\/\\\/dev.editura.ase.ro\\\/editura-ase\\\/wp-content\\\/uploads\\\/2022\\\/11\\\/stelian_stancu_data_mining_alb-negru_pt_site.pdf\",\"wpOptions\":\"true\"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Lucrarea de fa\u021b\u0103, intitulat\u0103 <em>Data Mining \u00een mediul R. Teorie \u0219i aplica\u021bii<\/em>, este structurat\u0103 pe 11 capitole, fiind conceput\u0103 cu scopul de a constitui un ghid util at\u00e2t pentru cercet\u0103tori, c\u00e2t \u0219i pentru practicieni, \u00een vederea cunoa\u0219terii unor aspecte mai mult sau mai pu\u021bin analitice referitoare la domeniul <em>Data Mining<\/em>.<\/p>\n<p>Procedura recunoscut\u0103 sub denumirea de <em>Data Mining<\/em> se poate defini, \u00een sens larg, drept o activitate ce presupune c\u0103utarea, colectarea \u0219i analiza datelor.<\/p>\n<p>Lucrarea este recomandat\u0103 at\u00e2t studen\u021bilor care au \u00een planul de \u00eenv\u0103\u021b\u0103m\u00e2nt disciplinele <em>Analiza Datelor<\/em>, <em>Data Mining<\/em> sau <em>Re\u021bele neuronale artificiale (RNA)<\/em>, c\u00e2t \u0219i cercet\u0103torilor, doctoranzilor \u0219i celor interesa\u021bi de aspecte c\u00e2t mai variate legate de explorarea datelor.<\/p>\n","protected":false},"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[896],"product_tag":[],"class_list":["post-12868","product","type-product","status-publish","product_cat-cibernetica-economica","pa_anul-aparitiei-1327","pa_book-author-stelian-stancu","first","instock","shipping-taxable","purchasable","product-type-variable"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Data Mining \u00een mediul R. Teorie \u0219i aplica\u021bii - Editura ASE<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dev.editura.ase.ro\/editura-ase\/product\/data-mining-in-mediul-r-teorie-si-aplicatii\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Data Mining \u00een mediul R. Teorie \u0219i aplica\u021bii - Editura ASE\" \/>\n<meta property=\"og:description\" content=\"Lucrarea de fa\u021b\u0103, intitulat\u0103 Data Mining \u00een mediul R. Teorie \u0219i aplica\u021bii, este structurat\u0103 pe 11 capitole, fiind conceput\u0103 cu scopul de a constitui un ghid util at\u00e2t pentru cercet\u0103tori, c\u00e2t \u0219i pentru practicieni, \u00een vederea cunoa\u0219terii unor aspecte mai mult sau mai pu\u021bin analitice referitoare la domeniul Data Mining.  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Lucrarea este recomandat\u0103 at\u00e2t studen\u021bilor care au \u00een planul de \u00eenv\u0103\u021b\u0103m\u00e2nt disciplinele Analiza Datelor, Data Mining sau Re\u021bele neuronale artificiale (RNA), c\u00e2t \u0219i cercet\u0103torilor, doctoranzilor \u0219i celor interesa\u021bi de aspecte c\u00e2t mai variate legate de explorarea datelor.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dev.editura.ase.ro\/editura-ase\/product\/data-mining-in-mediul-r-teorie-si-aplicatii\/\" \/>\n<meta property=\"og:site_name\" content=\"Editura ASE\" \/>\n<meta property=\"article:modified_time\" content=\"2022-11-02T11:24:50+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Timp estimat pentru citire\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/dev.editura.ase.ro\/editura-ase\/#website\",\"url\":\"https:\/\/dev.editura.ase.ro\/editura-ase\/\",\"name\":\"Editura ASE\",\"description\":\"Editura ASE\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/dev.editura.ase.ro\/editura-ase\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"ro-RO\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/dev.editura.ase.ro\/editura-ase\/product\/data-mining-in-mediul-r-teorie-si-aplicatii\/#webpage\",\"url\":\"https:\/\/dev.editura.ase.ro\/editura-ase\/product\/data-mining-in-mediul-r-teorie-si-aplicatii\/\",\"name\":\"Data Mining \u00een mediul R. 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