{"id":3759,"date":"2013-10-31T23:18:54","date_gmt":"2013-10-31T16:18:54","guid":{"rendered":"http:\/\/science-technology.vn\/?p=3759"},"modified":"2013-10-31T23:18:54","modified_gmt":"2013-10-31T16:18:54","slug":"big-data-va-gia-toc","status":"publish","type":"post","link":"https:\/\/science-technology.vn\/?p=3759","title":{"rendered":"Big Data v\u00e0 Gia t\u1ed1c"},"content":{"rendered":"

M\u1ed9t sinh vi\u00ean h\u1ecfi: \u201cEm hi\u1ec3u r\u1eb1ng Big Data l\u00e0 v\u1ec1 thu th\u1eadp “\u0111a d\u1ea1ng” d\u1eef li\u1ec7u theo “kh\u1ed1i l\u01b0\u1ee3ng” l\u1edbn nh\u01b0ng t\u1ea1i sao ch\u00fang ta c\u1ea7n n\u00f3 th\u1eadt nhanh? “Gia t\u1ed1c” c\u00f3 li\u00ean quan g\u00ec t\u1edbi Big Data? Xin th\u1ea7y gi\u1ea3i th\u00edch.”<\/span><\/p>\n

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\u0110\u00e1p: Big Data l\u00e0 c\u00f4ng ngh\u1ec7 m\u1edbi v\u00e0 c\u00e1ch m\u1edbi \u0111\u1ec3 l\u00e0m kinh doanh \u0111i\u1ec1u c\u00f3 th\u1ec3 th\u00eam nhi\u1ec1u \u01b0u th\u1ebf c\u00f3 gi\u00e1 tr\u1ecb. N\u00f3 h\u1ed9i t\u1ee5 v\u00e0o thu th\u1eadp d\u1eef li\u1ec7u t\u1eeb c\u00e1c kh\u1ed1i l\u01b0\u1ee3ng r\u1ea5t l\u1edbn c\u1ee7a \u0111a d\u1ea1ng r\u1ed9ng d\u1eef li\u1ec7u t\u1eeb nhi\u1ec1u ngu\u1ed3n b\u1eb1ng vi\u1ec7c t\u1ea1o kh\u1ea3 n\u0103ng thu th\u1eadp gia t\u1ed1c cao \u0111\u1ec3 tr\u00edch r\u00fat th\u00f4ng tin c\u00f3 gi\u00e1 tr\u1ecb v\u00e0 ph\u00e2n t\u00edch ch\u00fang \u0111\u1ec3 t\u1ea1o ra \u01b0u th\u1ebf doanh nghi\u1ec7p. Ng\u00e0y nay c\u00e1c c\u00f4ng ti tr\u00ean kh\u1eafp th\u1ebf gi\u1edbi \u0111ang k\u00edch \u0111\u1ed9ng v\u1ec1 vi\u1ec7c t\u00ecm ra nh\u1eefng c\u00e1ch m\u1edbi \u0111\u1ec3 tr\u00edch r\u00fat kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 s\u1ef1 \u0111a d\u1ea1ng d\u1eef li\u1ec7u t\u1eeb c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n x\u00e3 h\u1ed9i, thi\u1ebft b\u1ecb di \u0111\u1ed9ng, c\u00e1c c\u1ea3m bi\u1ebfn, v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c. Tuy nhi\u00ean nhi\u1ec1u ng\u01b0\u1eddi v\u1eabn g\u1eb7p v\u1ea5n \u0111\u1ec1 v\u1edbi gia t\u1ed1c hay nh\u1ecbp \u0111\u1ed9 theo \u0111\u00f3 d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thu th\u1eadp, t\u1ed5 ch\u1ee9c v\u00e0 ph\u00e2n t\u00edch \u0111\u1ec3 t\u1ea1o ra s\u00e1ng su\u1ed1t l\u00e0m cho c\u00e1c nh\u00e0 l\u00e3nh \u0111\u1ea1o doanh nghi\u1ec7p c\u00f3 th\u1ec3 h\u00e0nh \u0111\u1ed9ng nhanh ch\u00f3ng \u0111\u1ec3 ph\u00e1t sinh gi\u00e1 tr\u1ecb doanh nghi\u1ec7p t\u1ee9c th\u00ec.<\/p>\n

Nhu c\u1ea7u v\u1ec1 t\u1ed1c \u0111\u1ed9 trong Big Data l\u00e0 quan tr\u1ecdng b\u1edfi v\u00ec m\u1ecdi th\u1ee9 x\u1ea3y ra nhanh. N\u1ebfu m\u1ed9t ng\u00e2n h\u00e0ng thu th\u1eadp th\u00f4ng tin \u0111\u1ec3 ph\u00e1t hi\u1ec7n m\u00f3n vay x\u1ea5u nh\u01b0ng th\u1ea5y ch\u00fang s\u00e1u tu\u1ea7n sau khi cho vay nhi\u1ec1u kho\u1ea3n vay th\u00ec \u0111i\u1ec1u \u0111\u00f3 l\u00e0 qu\u00e1 tr\u1ec5 \u0111\u1ec3 l\u00e0m c\u00e1i g\u00ec \u0111\u00f3 v\u1ec1 vi\u1ec7c \u0111\u00f3. Th\u00f4ng tin \u0111\u01b0\u1ee3c thu th\u1eadp KH\u00d4NG c\u00f2n gi\u00e1 tr\u1ecb n\u1eefa. Ng\u00e2n h\u00e0ng c\u1ea7n gia t\u1ed1c \u0111\u1ec3 cho n\u00f3 c\u00f3 th\u1ec3 nh\u1eadn di\u1ec7n kho\u1ea3n vay x\u1ea5u trong khi x\u1eed l\u00ed vi\u1ec7c xin vay ch\u1ee9 kh\u00f4ng ph\u1ea3i sau \u0111i\u1ec1u \u0111\u00f3. C\u00f9ng \u0111i\u1ec1u \u0111\u00f3 x\u1ea3y ra khi nh\u1eefng ng\u01b0\u1eddi kinh doanh th\u1ecb tr\u01b0\u1eddng ch\u1ee9ng kho\u00e1n c\u1ea7n ra quy\u1ebft \u0111\u1ecbnh v\u1ec1 mua hay b\u00e1n khi th\u1ecb tr\u01b0\u1eddng ch\u1ee9ng kho\u00e1n l\u00ean hay xu\u1ed1ng, ch\u1eadm v\u00e0i ph\u00fat c\u00f3 th\u1ec3 c\u00f3 ngh\u0129a l\u00e0 h\u1ecd ph\u1ea3i tr\u1ea3 gi\u00e1 cao h\u01a1n hay b\u00e1n v\u1edbi gi\u00e1 th\u1ea5p h\u01a1n v\u00e0 \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 m\u1ea5t \u01b0u th\u1ebf.<\/p>\n

Trong th\u1ecb tr\u01b0\u1eddng thay \u0111\u1ed5i nhanh ch\u00f3ng n\u00e0y, t\u1ed1c \u0111\u1ed9 l\u00e0 r\u1ea5t quan tr\u1ecdng. V\u00ec d\u1eef li\u1ec7u th\u01b0\u1eddng l\u01b0u trong c\u01a1 s\u1edf d\u1eef li\u1ec7u m\u00e0 c\u1ea7n th\u1eddi gian \u0111\u1ec3 t\u00ecm ki\u1ebfm v\u00e0 c\u1eadp nh\u1eadt v\u00e0 \u0111i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0 qu\u00e1 tr\u1ec5. C\u00f3 c\u00f4ng ngh\u1ec7 m\u1edbi c\u00f3 th\u1ec3 l\u00e0m cho m\u1ecdi s\u1ef1 x\u1ea3y ra nhanh h\u01a1n nh\u01b0 t\u00ednh to\u00e1n trong b\u1ed9 nh\u1edb, s\u1ebd gi\u00fap c\u1eaft b\u1edbt th\u1eddi gian c\u1ea7n \u0111\u1ec3 truy nh\u1eadp, truy l\u1ee5c, c\u1eadp nh\u1eadt v\u00e0 ph\u00e2n t\u00edch th\u00f4ng tin t\u1edbi v\u00e0i gi\u00e2y b\u1edfi v\u00ec d\u1eef li\u1ec7u \u1edf trong m\u00e1y t\u00ednh n\u01a1i n\u00f3 d\u1ec5 d\u00e0ng tr\u00edch r\u00fat ra thay v\u00ec l\u01b0u gi\u1eef ch\u00fang tr\u00ean \u0111\u0129a c\u1ee9ng \u0111i\u1ec1u c\u1ea7n th\u1eddi gian t\u00ecm v\u00e0 truy l\u1ee5c.<\/p>\n

T\u1ea5t nhi\u00ean, c\u00f4ng ngh\u1ec7 ch\u1ec9 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng. C\u00e1c c\u00f4ng ti c\u1ea7n c\u00e1c nh\u00e0 khoa h\u1ecdc d\u1eef li\u1ec7u c\u00f3 k\u0129 n\u0103ng v\u00e0 c\u00e1c nh\u00e0 th\u1ed1ng k\u1ebf \u0111\u1ec3 ph\u00e1t tri\u1ec3n c\u00e1c m\u00f4 h\u00ecnh ph\u00e2n t\u00edch nhanh v\u00e0 c\u00e1c thu\u1eadt to\u00e1n hi\u1ec7u qu\u1ea3 \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c th\u00f4ng tin c\u00f3 gi\u00e1 tr\u1ecb cho ng\u01b0\u1eddi ra quy\u1ebft \u0111\u1ecbnh nhanh ch\u00f3ng. Gia t\u1ed1c d\u1eef li\u1ec7u l\u00e0 s\u1ef1 c\u1ea7n thi\u1ebft doanh nghi\u1ec7p m\u00e0 t\u1ea1o cho c\u00f4ng ti c\u01a1 h\u1ed9i \u0111\u1ec3 \u0111\u00e1nh b\u1ea1i \u0111\u1ed1i th\u1ee7 c\u1ea1nh tranh trong th\u1ecb tr\u01b0\u1eddng c\u1ea1nh tranh cao. V\u00e0i n\u0103m tr\u01b0\u1edbc, vi\u1ec7c l\u00e0m c\u1ee7a nh\u00e0 khoa h\u1ecdc d\u1eef li\u1ec7u, k\u0129 s\u01b0 d\u1eef li\u1ec7u, ng\u01b0\u1eddi ph\u00e2n t\u00edch d\u1eef li\u1ec7u th\u1eadm ch\u00ed c\u00f2n ch\u01b0a t\u1ed3n t\u1ea1i. Ng\u00e0y nay m\u1ecdi c\u00f4ng ti \u0111\u1ec1u c\u1ea7n ch\u00fang v\u00e0 khi nhu c\u1ea7u l\u00e0 cao, nhi\u1ec1u sinh vi\u00ean khoa h\u1ecdc m\u00e1y t\u00ednh \u0111ang chuy\u1ec3n v\u00e0o trong b\u1eb1ng c\u1ea5p chuy\u00ean s\u00e2u trong khoa h\u1ecdc d\u1eef li\u1ec7u v\u00e0 ph\u00e1t tri\u1ec3n c\u00e1c k\u0129 n\u0103ng trong thao t\u00e1c d\u1eef li\u1ec7u, ph\u00e2n t\u00edch d\u1eef li\u1ec7u d\u00f9ng Hadoop, Pig, v\u00e0 Hive, NonSQL, v\u00e0 MapReduce v.v.<\/p>\n

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—English version—<\/p>\n

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Big Data and Velocity<\/p>\n

A student asked: \u201cI understand that Big Data is about collecting a \u201cVariety\u201d of data in large \u201cVolume\u201d but why do we need to do it fast? What \u201cVelocity\u201d has to do with Big Data? Please explain.”<\/p>\n

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Answer: Big Data is new technology and new way to do business that can add many valuable advantages. It focuses on collect data from very large volumes of wide variety of data from many sources by enabling high velocity collection to extract valuable information and analyze them to create business advantages. Today companies around the world are excited about finding new ways to extract the volume and variety of data from social media, mobile devices, sensors, and other applications. However many are still having problem with velocity or the pace at which data can be collected, organized and analyzed to produce insights that business leaders can act quickly to generate instant business value.<\/p>\n

The need for speed in Big Data is important because things happen fast. If a bank collects information to detect bad loans but finding them six weeks after loaning out many loans then it is too late to do something about it. The information collected is NOT valuable anymore. The bank needs velocity so it can identify bad loans while processing the application not after that. The same thing happen when stock market traders need to make decision on buying or selling when the stock market is going up or down, a few minutes late could means they have to pay higher price or selling at lower price and it means losing advantages.<\/p>\n

In this fast changing market, speed is very important. Since data is often store in database which needs time to retrieve and update and it may be too late. There is new technology that can make things happen faster such as in-memory computing, will help cut the time it takes to access, retrieve, update and analyze information to few seconds because the data is in the computer where it is easy to extract instead of store them on disk drives that take time to search and retrieve.<\/p>\n

Of course, technology is only part of the system. Companies need skilled data scientists and statisticians to develop fast analytic models and efficient algorithms to get valuable information to decision makers quickly. Data velocity is a business necessity that gives companies an opportunity to beat competitors in a highly competitive market. Few years ago, the jobs of data scientist, data engineer, data analyst did not even exist. Today every company need them and as the demand is high, more computer science students are moving into advanced degree in data science and develop skills in data manipulation, data analytics using Hadoop, Pig, and Hive, NonSQL, and MapReduce etc.<\/p>\n","protected":false},"excerpt":{"rendered":"

M\u1ed9t sinh vi\u00ean h\u1ecfi: \u201cEm hi\u1ec3u r\u1eb1ng Big Data l\u00e0 v\u1ec1 thu th\u1eadp “\u0111a d\u1ea1ng” d\u1eef li\u1ec7u theo “kh\u1ed1i l\u01b0\u1ee3ng” l\u1edbn nh\u01b0ng t\u1ea1i sao ch\u00fang … <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30,36],"tags":[],"class_list":["post-3759","post","type-post","status-publish","format-standard","hentry","category-hoi-va-dap","category-social-media-mobility-big-data-analytics-and-cloud-computing"],"_links":{"self":[{"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts\/3759","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=3759"}],"version-history":[{"count":2,"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts\/3759\/revisions"}],"predecessor-version":[{"id":3761,"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts\/3759\/revisions\/3761"}],"wp:attachment":[{"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3759"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3759"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}