{"id":93,"date":"2013-06-17T12:04:42","date_gmt":"2013-06-17T05:04:42","guid":{"rendered":"http:\/\/science-technology.vn\/?p=93"},"modified":"2013-10-31T09:46:08","modified_gmt":"2013-10-31T02:46:08","slug":"du-lieu-lon-la-gi","status":"publish","type":"post","link":"https:\/\/science-technology.vn\/?p=93","title":{"rendered":"Big Data l\u00e0 g\u00ec"},"content":{"rendered":"

M\u1ed9t ng\u01b0\u1eddi qu\u1ea3n l\u00ed h\u1ecfi: \u201cT\u00f4i \u0111\u00e3 \u0111\u1ecdc b\u00e0i c\u1ee7a th\u1ea7y v\u1ec1 \u201cBig Data-D\u1eef li\u1ec7u l\u1edbn\u201d nh\u01b0ng v\u1eabn kh\u00f4ng hi\u1ec3u \u0111\u00edch x\u00e1c n\u00f3 ngh\u0129a l\u00e0 g\u00ec. Ch\u00fang t\u00f4i thu th\u1eadp nhi\u1ec1u d\u1eef li\u1ec7u cho c\u00f4ng ti ch\u00fang t\u00f4i v\u00e0 l\u01b0u gi\u1eef ch\u00fang trong c\u01a1 s\u1edf d\u1eef li\u1ec7u. \u0110\u00f3 c\u00f3 ph\u1ea3i l\u00e0 D\u1eef li\u1ec7u l\u1edbn kh\u00f4ng? T\u1ea1i sao n\u00f3 quan tr\u1ecdng ng\u00e0y nay. Xin th\u1ea7y l\u1eddi khuy\u00ean.\u201d<\/span><\/p>\n

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\u0110\u00e1p: C\u00f3 kh\u00e1c bi\u1ec7t gi\u1eefa “D\u1eef li\u1ec7u l\u1edbn” v\u00e0 “Nhi\u1ec1u d\u1eef li\u1ec7u” v\u00e0 m\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng b\u1ecb l\u1eabn l\u1ed9n. Ch\u1eb3ng h\u1ea1n, ng\u00e2n h\u00e0ng v\u00e0 c\u00e1c c\u00f4ng ti t\u00e0i ch\u00ednh x\u1eed l\u00ed nhi\u1ec1u d\u1eef li\u1ec7u nh\u01b0ng t\u1ea5t c\u1ea3 d\u1eef li\u1ec7u c\u1ee7a h\u1ecd \u0111\u1ec1u \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 hay c\u00f3 c\u1ea5u tr\u00fac t\u1ed1t nh\u01b0 t\u00e0i kho\u1ea3n kh\u00e1ch h\u00e0ng, s\u1ed1 ti\u1ec1n, ki\u1ec3u vay n\u1ee3, c\u00f3 hay n\u1ee3 v.v. \u0110\u00e2y KH\u00d4NG ph\u1ea3i l\u00e0 D\u1eef li\u1ec7u l\u1edbn m\u00e0 ch\u1ec9 l\u00e0 “nhi\u1ec1u d\u1eef li\u1ec7u.” C\u00e1c c\u00f4ng ti c\u00f3 th\u1ec3 l\u01b0u gi\u1eef c\u00e1c d\u1eef li\u1ec7u n\u00e0y trong c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 d\u00f9ng ph\u1ea7n m\u1ec1m Trinh s\u00e1t doanh nghi\u1ec7p (BI) \u0111\u1ec3 ph\u00e2n t\u00edch v\u00e0 cung c\u1ea5p c\u00e1c b\u00e1o c\u00e1o cho c\u1ea5p qu\u1ea3n l\u00ed.<\/p>\n

\u0110\u1ec3 c\u00f3 t\u01b0 c\u00e1ch l\u00e0 “D\u1eef li\u1ec7u l\u1edbn” c\u00e1c d\u1eef li\u1ec7u ph\u1ea3i \u0111\u00e1p \u1ee9ng ti\u00eau ch\u00ed c\u00f3 t\u00ean “Ba “V”: Volume – kh\u1ed1i l\u01b0\u1ee3ng, Variety – \u0111a d\u1ea1ng v\u00e0 Velocity – v\u1eadn t\u1ed1c. V\u1edbi Volume n\u00f3 c\u00f3 ngh\u0129a l\u00e0 d\u1eef li\u1ec7u ph\u1ea3i c\u1ef1c k\u00ec l\u1edbn, \u0111o theo Petabytes hay Zetabytes. V\u1edbi Variety n\u00f3 c\u00f3 ngh\u0129a l\u00e0 d\u1eef li\u1ec7u c\u00f3 c\u1ea3 c\u1ea5u tr\u00fac v\u00e0 phi c\u1ea5u tr\u00fac hay \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh. Ch\u1eb3ng h\u1ea1n m\u1ed9t s\u1ed1 d\u1eef li\u1ec7u c\u00f3 th\u1ec3 l\u00e0 v\u0103n b\u1ea3n nh\u01b0ng s\u1ed1 kh\u00e1c c\u00f3 th\u1ec3 l\u00e0 \u1ea3nh nh\u01b0 \u1ea3nh y h\u1ecdc hay video YouTube. V\u1edbi Velocity, n\u00f3 c\u00f3 ngh\u0129a l\u00e0 nh\u1eefng d\u1eef li\u1ec7u n\u00e0y th\u01b0\u1eddng t\u1edbi r\u1ea5t nhanh v\u00e0 th\u01b0\u1eddng xuy\u00ean thay \u0111\u1ed5i nh\u01b0 lu\u1ed3ng video cho c\u00e1c \u1ea3nh, hay c\u00e1c th\u00f4ng \u0111i\u1ec7p n\u1ea1p v\u00e0o twitter.<\/p>\n

B\u1edfi v\u00ec nh\u1eefng hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y, c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 hi\u1ec7n th\u1eddi s\u1ebd kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng l\u01b0u gi\u1eef ch\u00fang (qu\u00e1 l\u1edbn v\u00e0 qu\u00e1 kh\u00f4ng \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c) v\u00e0 ph\u1ea7n m\u1ec1m hi\u1ec7n th\u1eddi s\u1ebd kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00ed ch\u00fang (l\u1edbn, phi t\u1ed5 ch\u1ee9c v\u00e0 thay \u0111\u1ed5i qu\u00e1 nhanh) v\u00e0 \u0111\u00f3 l\u00e0 l\u00ed do t\u1ea1i sao n\u00f3 m\u1edf ra th\u00e1ch th\u1ee9c ho\u00e0n to\u00e0n m\u1edbi cho ng\u01b0\u1eddi l\u00e0m c\u00f4ng ngh\u1ec7 th\u00f4ng tin.<\/p>\n

Trong qu\u00e1 kh\u1ee9 khi m\u1ecdi d\u1eef li\u1ec7u \u0111\u1ec1u \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 v\u00e0 c\u00f3 c\u1ea5u tr\u00fac, ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef trong c\u00e1c t\u1ec7p l\u1edbn \u0111\u1ec3 \u0111\u01b0\u1ee3c truy l\u1ee5c v\u00e0 c\u1eadp nh\u1eadt b\u1ea5t k\u1ec3 l\u1edbn th\u1ebf n\u00e0o hay nhi\u1ec1u t\u1ec7p bao nhi\u00eau. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y ph\u1ea7n m\u1ec1m Trinh s\u00e1t doanh nghi\u1ec7p (BI) kh\u00f4ng th\u1ec3 ph\u00e2n lo\u1ea1i \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u, thu th\u1eadp th\u00f4ng tin c\u1ea7n thi\u1ebft, ph\u00e2n t\u00edch ch\u00fang v\u00e0 t\u1ea1o ra b\u00e1o c\u00e1o cho c\u00e1c m\u1ee9c qu\u1ea3n l\u00ed kh\u00e1c nhau. Ng\u00e0y nay khi d\u1eef li\u1ec7u l\u00e0 kh\u1ed5ng l\u1ed3 v\u00e0 bao g\u1ed3m c\u1ea3 c\u00f3 c\u1ea5u tr\u00fac v\u00e0 phi c\u1ea5u tr\u00fac, m\u1ed9t s\u1ed1 l\u00e0 v\u0103n b\u1ea3n v\u00e0 m\u1ed9t s\u1ed1 l\u00e0 \u1ea3nh hay video, n\u00f3 kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef trong c\u00e1c t\u1ec7p c\u00f3 t\u1ed5 ch\u1ee9c m\u00e0 c\u1ea7n nh\u1eefng ki\u1ec3u t\u1ec7p kh\u00e1c v\u1edbi ph\u1ea7n m\u1ec1m m\u1edbi, thu\u1eadt to\u00e1n m\u1edbi m\u00e0 c\u00f3 th\u1ec3 t\u1ed5 h\u1ee3p nh\u1eefng d\u1eef li\u1ec7u n\u00e0y v\u00e0 l\u01b0u gi\u1eef ch\u00fang \u0111\u1ec3 cho ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch, t\u1ed5 ch\u1ee9c, thu th\u1eadp v\u00e0 t\u1ea1o ra b\u00e1o c\u00e1o. V\u00ec m\u1ed9t s\u1ed1 trong nh\u1eefng d\u1eef li\u1ec7u n\u00e0y thay \u0111\u1ed5i c\u1ef1c k\u00ec nhanh, m\u1ed9t s\u1ed1 trong ch\u00fang l\u00e0 th\u00f4ng tin ph\u1ee5 thu\u1ed9c th\u1eddi gian nh\u01b0 video m\u1edbi, phim v\u00e0 \u1ea3nh v.v. Ch\u00fang y\u00eau c\u1ea7u c\u00e1ch ti\u1ebfp c\u1eadn m\u1edbi, c\u00e1ch m\u1edbi \u0111\u1ec3 t\u1ed5 ch\u1ee9c ch\u00fang, v\u00e0 thu\u1eadt to\u00e1n m\u1edbi \u0111\u1ec3 x\u1eed l\u00ed, \u0111\u1eb7t quan h\u1ec7 v\u00e0 gi\u1ea3i quy\u1ebft v\u1edbi nhi\u1ec1u bi\u1ebfn thi\u00ean h\u01a1n c\u00e1c c\u00f4ng c\u1ee5 tr\u01b0\u1edbc \u0111\u00e2y.<\/p>\n

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—-English version—-<\/p>\n

 <\/p>\n

What is Big Data<\/p>\n

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A manager asked: \u201cI have read your article on \u201cBig Data\u201d but still do not understand exactly what it means. We collect a lot of data for our company and store them in our database. Is it Big data? Why it is important today. Please advice.\u201d<\/p>\n

Answer: There is a difference between \u201cBig Data\u201d and \u201cLots of Data\u201d and people are often confused. For example, bank and financial companies process a lot of data but all of their data are well defined or well structured such as customer accounts, amount of money, types of loans, credits or debits etc. These are NOT Big data but only \u201cLots of data\u201d. Companies can store these data in databases and using Business Intelligence (BI) software to analyze and provide reports to management.<\/p>\n

To qualify as \u201cBig Data\u201d the data must meet criteria called \u201cThe three \u201cV\u201d: Volume, Variety and Velocity. By Volume it means the data have to be extremely large, measuring in Petabytes or Zeta bytes. By Variety it means the data are both structured and unstructured or well defined and undefined. For example some data may be textual but other may be picture images such as medical images or YouTube videos. By Velocity, it means these data often come in very fast and constantly changing such as streaming video for images, or twitter feed messages.<\/p>\n

Because of these phenomena, current relational database will not be able to store them (To large and too unorganized) and current software will not be able to process them (To large, to unorganized, and changing too fast) and that is why it opens up a completely new challenge for Information technology people.<\/p>\n

In the past when all data were well defined and structured, they can be stored in large files to be retrieved and updated regardless how big or how many files. In this case Business Intelligence (BI) software can sort through data, collects necessary information, analyzes them and creates reports to different levels of management. Today when the data are huge and include both structured and unstructured, some are text and some are pictures or videos, it cannot be stored into organized files but need different types of files with new software, new algorithms that can combine these data and stored them so they can be analyzed, organized, collected and created reports. Since some of these data are changing extremely fast, some of them are time dependent information such as news videos, movies and pictures etc. They require a new approach, a new way of organizing them, and new algorithms to process, correlate, and dealing with more variables than previous tools.<\/p>\n","protected":false},"excerpt":{"rendered":"

M\u1ed9t ng\u01b0\u1eddi qu\u1ea3n l\u00ed h\u1ecfi: \u201cT\u00f4i \u0111\u00e3 \u0111\u1ecdc b\u00e0i c\u1ee7a th\u1ea7y v\u1ec1 \u201cBig Data-D\u1eef li\u1ec7u l\u1edbn\u201d nh\u01b0ng v\u1eabn kh\u00f4ng hi\u1ec3u \u0111\u00edch x\u00e1c n\u00f3 ngh\u0129a l\u00e0 … <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,36,26],"tags":[],"class_list":["post-93","post","type-post","status-publish","format-standard","hentry","category-xu-huong-toan-cau","category-social-media-mobility-big-data-analytics-and-cloud-computing","category-xu-huong-cong-nghe"],"_links":{"self":[{"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts\/93","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=93"}],"version-history":[{"count":4,"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts\/93\/revisions"}],"predecessor-version":[{"id":3735,"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts\/93\/revisions\/3735"}],"wp:attachment":[{"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=93"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=93"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=93"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}