{"id":296,"date":"2013-06-18T09:28:52","date_gmt":"2013-06-18T02:28:52","guid":{"rendered":"http:\/\/science-technology.vn\/?p=296"},"modified":"2013-10-31T09:42:47","modified_gmt":"2013-10-31T02:42:47","slug":"khai-pha-du-lieu","status":"publish","type":"post","link":"https:\/\/science-technology.vn\/?p=296","title":{"rendered":"Khai ph\u00e1 d\u1eef li\u1ec7u"},"content":{"rendered":"

M\u1ed9t sinh vi\u00ean h\u1ecfi: \u201cKhai ph\u00e1 d\u1eef li\u1ec7u l\u00e0 g\u00ec? N\u00f3 kh\u00e1c th\u1ebf n\u00e0o v\u1edbi qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u? Em mu\u1ed1n l\u00e0 ng\u01b0\u1eddi ph\u00e2n t\u00edch khai ph\u00e1 d\u1eef li\u1ec7u, em c\u00f3 th\u1ec3 h\u1ecdc v\u1ec1 l\u0129nh v\u1ef1c n\u00e0y \u1edf \u0111\u00e2u?”<\/span><\/p>\n

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\u0110\u00e1p: Khai ph\u00e1 d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 vi\u1ec7c th\u0103m d\u00f2 c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u r\u1ea5t l\u1edbn qua vi\u1ec7c d\u00f9ng nh\u1eefng c\u00f4ng c\u1ee5 v\u00e0 qui tr\u00ecnh chuy\u00ean d\u1ee5ng. M\u1ee5c \u0111\u00edch c\u1ee7a khai ph\u00e1 d\u1eef li\u1ec7u l\u00e0 tr\u00edch ra th\u00f4ng tin h\u1eefu d\u1ee5ng t\u1eeb d\u1eef li\u1ec7u, v\u00e0 cung c\u1ea5p th\u00f4ng tin \u0111\u00f3 cho ng\u01b0\u1eddi qu\u1ea3n l\u00ed hay ng\u01b0\u1eddi ra quy\u1ebft \u0111\u1ecbnh \u0111\u1ec3 d\u00f9ng trong trinh s\u00e1t doanh nghi\u1ec7p, hay d\u1ef1 b\u00e1o v.v.<\/p>\n

Khai ph\u00e1 d\u1eef li\u1ec7u l\u00e0 vi\u1ec7c \u00e1p d\u1ee5ng c\u00e1c k\u0129 thu\u1eadt ph\u00e2n t\u00edch th\u1ed1ng k\u00ea \u0111\u1ec3 tr\u00edch r\u00fat, truy l\u1ee5c v\u00e0 th\u0103m d\u00f2 d\u1eef li\u1ec7u th\u00f4 r\u1ed3i ph\u00e2n t\u00edch ch\u00fang th\u00e0nh th\u00f4ng tin h\u1eefu d\u1ee5ng d\u00f9ng ph\u1ea7n m\u1ec1m m\u00e1y t\u00ednh cho x\u1eed l\u00ed nhanh h\u01a1n.\u00a0Qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 duy tr\u00ec c\u00e1c b\u1ea3n ghi b\u1eb1ng s\u1eafp x\u1ebfp, c\u1eadp nh\u1eadt cho nhi\u1ec1u ki\u1ec3u d\u1eef li\u1ec7u c\u0169ng d\u00f9ng ph\u1ea7n m\u1ec1m m\u00e1y t\u00ednh \u0111\u01b0\u1ee3c bi\u1ebft t\u1edbi nh\u01b0 h\u1ec7 qu\u1ea3n l\u00ed c\u01a1 s\u1edf d\u1eef li\u1ec7u (DBMS).<\/p>\n

\u0110\u1ec3 h\u1ecdc v\u1ec1 khai ph\u00e1 d\u1eef li\u1ec7u, b\u1ea1n c\u1ea7n c\u00f3 tri th\u1ee9c v\u1ec1 mi\u1ec1n doanh nghi\u1ec7p, hi\u1ec3u c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 c\u00e1ch n\u00f3 l\u00e0m vi\u1ec7c, c\u00f3 k\u0129 n\u0103ng ph\u00e2n t\u00edch d\u1eef li\u1ec7u v\u00e0 m\u1ed9t s\u1ed1 k\u0129 thu\u1eadt \u0111\u1ec3 l\u1ecdc v\u00e0 l\u00e0m s\u1ea1ch d\u1eef li\u1ec7u, \u0111o ch\u1ea5t l\u01b0\u1ee3ng d\u1eef li\u1ec7u, v\u00e0 gi\u1ea3i quy\u1ebft v\u1edbi vi\u1ec7c thi\u1ebfu d\u1eef li\u1ec7u. Khai ph\u00e1 d\u1eef li\u1ec7u l\u00e0 m\u00f4n h\u1ecdc chuy\u00ean s\u00e2u \u0111\u01b0\u1ee3c d\u1ea1y ch\u1ee7 y\u1ebfu trong b\u1eadc th\u1ea1c s\u0129 v\u1ec1 Qu\u1ea3n l\u00ed h\u1ec7 th\u00f4ng tin.<\/p>\n

C\u00f3 m\u1ed9t s\u1ed1 thu\u1eadt to\u00e1n v\u00e0 c\u00f4ng c\u1ee5 khai ph\u00e1 d\u1eef li\u1ec7u hi\u1ec7n \u0111\u00e3 t\u1ed3n t\u1ea1i, m\u1ed7i th\u1ee9 \u0111\u1ec1u c\u00f3 \u01b0u \u0111i\u1ec3m v\u00e0 h\u1ed7 tr\u1ee3 nh\u01b0ng h\u1ecdc d\u00f9ng c\u00f4ng c\u1ee5 l\u00e0 d\u1ec5 d\u00e0ng. \u0110\u1ec3 l\u00e0 ng\u01b0\u1eddi ph\u00e2n t\u00edch d\u1eef li\u1ec7u hay nh\u00e0 khoa h\u1ecdc d\u1eef li\u1ec7u gi\u1ecfi, b\u1ea1n s\u1ebd c\u1ea7n hi\u1ec3u qui tr\u00ecnh khai ph\u00e1 d\u1eef li\u1ec7u, c\u00e1c m\u00f4 h\u00ecnh \u01b0\u1edbc l\u01b0\u1ee3ng c\u1ee7a n\u00f3. B\u1ea1n ph\u1ea3i bi\u1ebft c\u00e1ch so s\u00e1nh v\u00e0 l\u1ef1a ch\u1ecdn k\u0129 thu\u1eadt n\u00e0o l\u00e0 th\u00edch h\u1ee3p cho \u0111i\u1ec1u b\u1ea1n l\u00e0m. L\u1eddi khuy\u00ean c\u1ee7a t\u00f4i l\u00e0 th\u1eed nhi\u1ec1u k\u0129 thu\u1eadt kh\u00e1c nhau nh\u1ea5t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ec3 cho b\u1ea1n quen thu\u1ed9c v\u1edbi t\u1ea5t c\u1ea3 ch\u00fang v\u00e0 h\u1ecdc c\u00e1ch chu\u1ea9n b\u1ecb d\u1eef li\u1ec7u cho ph\u00e2n t\u00edch, v\u00ec \u0111\u00f3 l\u00e0 nhi\u1ec7m v\u1ee5 t\u1ed1n th\u1eddi gian.<\/p>\n

 <\/p>\n

—-English version—-<\/p>\n

 <\/p>\n

Data mining<\/p>\n

A student asked: \u201cWhat Is Data Mining? How does it differ from database administration? I want to be a Data Mining Analyst, where could I learn about this field?<\/p>\n

Answer: Data Mining can be defined as the exploration of very large databases through the use of special\u00adized tools and processes. The purpose of the data mining is to extract useful information from the data, and provide that information to managers or decision making people to use in business intelligence, or forecasting etc.<\/p>\n

Data mining is the application of statistical analy\u00adsis techniques used for extraction, retrieving and exploring raw data then analyze them and incorporate them into useful information using computer software for faster processing.\u00a0Database administration is the maintaining of records by storing, updating, of many types of data using computer software known as a database management system (DBMS).<\/p>\n

To learn about data mining, you need to have knowledge of the business domain, understand database and how it works, having data analysis skills and some techniques for filtering and cleansing data, measuring the quality of data, and dealing with missing data. Data mining is an advanced course taught mostly in the Master degree of Information System Management.<\/p>\n

There are number of data mining algorithms and tools exist already, each has certain advantages and supports but learning to use a tool is easy. To be a good data analyst or data scientist, you will need to understand the process of data mining, its estimation models. You must know how to compare and select which techniques are appropriated for what you do. My advice is to try as many different techniques as possible so you area familiar with all of them and learn how to prepare the data for analysis, because it is a time-consuming task.<\/p>\n","protected":false},"excerpt":{"rendered":"

M\u1ed9t sinh vi\u00ean h\u1ecfi: \u201cKhai ph\u00e1 d\u1eef li\u1ec7u l\u00e0 g\u00ec? N\u00f3 kh\u00e1c th\u1ebf n\u00e0o v\u1edbi qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u? Em mu\u1ed1n l\u00e0 ng\u01b0\u1eddi … <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,36],"tags":[],"class_list":["post-296","post","type-post","status-publish","format-standard","hentry","category-quan-li-he-thong-tin","category-social-media-mobility-big-data-analytics-and-cloud-computing"],"_links":{"self":[{"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts\/296","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=296"}],"version-history":[{"count":3,"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts\/296\/revisions"}],"predecessor-version":[{"id":1324,"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts\/296\/revisions\/1324"}],"wp:attachment":[{"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=296"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=296"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}