{"id":3396,"date":"2013-07-20T09:24:05","date_gmt":"2013-07-20T02:24:05","guid":{"rendered":"http:\/\/science-technology.vn\/?p=3396"},"modified":"2013-10-31T10:13:36","modified_gmt":"2013-10-31T03:13:36","slug":"tinh-nhanh-cua-big-data","status":"publish","type":"post","link":"https:\/\/science-technology.vn\/?p=3396","title":{"rendered":"Gia t\u1ed1c c\u1ee7a Big Data"},"content":{"rendered":"

M\u1ed9t ng\u01b0\u1eddi ph\u00e1t tri\u1ec3n vi\u1ebft cho t\u00f4i: \u201cEm th\u00edch blog c\u1ee7a th\u1ea7y v\u1ec1 Big Data. Em hi\u1ec3u kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a Big Data; s\u1ef1 \u0111a d\u1ea1ng c\u1ee7a d\u1eef li\u1ec7u nh\u01b0 c\u00f3 c\u1ea5u tr\u00fac v\u00e0 phi c\u1ea5u tr\u00fac, nh\u01b0ng em kh\u00f4ng hi\u1ec3u v\u1ea5n \u0111\u1ec1 gia t\u1ed1c – velocity. Xin th\u1ea7y gi\u1ea3i th\u00edch.\u201d<\/span><\/p>\n

 <\/p>\n

\u0110\u00e1p: C\u00f3 ba y\u1ebfu t\u1ed1 then ch\u1ed1t c\u1ee7a Big Data (Ba ch\u1eef V: Volume, Variety v\u00e0 Velocity.) Velocity – gia t\u1ed1c – ngh\u0129a l\u00e0 d\u1eef li\u1ec7u thay \u0111\u1ed5i v\u00e0 t\u0103ng tr\u01b0\u1edfng nhanh. N\u00f3 ng\u00e0y c\u00e0ng l\u1edbn l\u00ean theo th\u1eddi gian. Ch\u1eb3ng h\u1ea1n, m\u1ecdi ng\u01b0\u1eddi th\u00eam d\u1eef li\u1ec7u v\u00e0o trong websites c\u1ee7a h\u1ecd m\u1ecdi l\u00fac v\u00e0 n\u00f3 t\u0103ng l\u00ean nhanh ch\u00f3ng. C\u00e1c giao t\u00e1c th\u1ecb tr\u01b0\u1eddng ch\u1ee9ng kho\u00e1n chuy\u1ec3n h\u00e0ng t\u1ec9 hay ngh\u00ecn t\u1ec9 \u0111\u00f4 la c\u1ee9 v\u00e0i gi\u00e2y. C\u00e1c c\u1ea3m bi\u1ebfn th\u1eddi ti\u1ebft \u0111o thay \u0111\u1ed5i v\u1ec1 nhi\u1ec7t \u0111\u1ed9 c\u1ee9 v\u00e0i ph\u00fat. YouTube th\u00eam c\u00e1c lu\u1ed3ng video c\u1ee9 n\u0103m ph\u00fat m\u1ed9t. Kh\u00f4ng ch\u1ec9 nh\u1eefng d\u1eef li\u1ec7u n\u00e0y y\u00eau c\u1ea7u b\u1ed9 nh\u1edb l\u01b0u gi\u1eef kh\u1ed5ng l\u1ed3 m\u00e0 n\u00f3 thay \u0111\u1ed5i nhanh th\u1ebf v\u00e0 l\u00e0m cho vi\u1ec7c ph\u00e2n t\u00edch th\u00e0nh kh\u00f3 th\u1ebf. B\u1ea1n ph\u1ea3i thu th\u1eadp v\u00e0 ph\u00e2n t\u00edch nh\u1eefn d\u1eef li\u1ec7u n\u00e0y theo “th\u1eddi gian th\u1ef1c” n\u1ebfu kh\u00f4ng n\u00f3 m\u1ea5t ngh\u0129a. Ch\u1eb3ng h\u1ea1n, n\u1ebfu b\u1ea1n gi\u00e1m s\u00e1t xu h\u01b0\u1edbng th\u1ecb tr\u01b0\u1eddng ch\u1ee9ng kho\u00e1n d\u1ef1a tr\u00ean d\u1eef li\u1ec7u ng\u00e0y h\u00f4m qua th\u00ec b\u1ea1n c\u00f3 th\u1ec3 b\u1ecf l\u1ee1 c\u00e1i g\u00ec \u0111\u00f3 do th\u00f4ng tin “l\u1ea1c h\u1eadu” c\u1ee7a b\u1ea1n.<\/p>\n

Th\u00e1ch th\u1ee9c c\u1ee7a Big Data, kh\u00f4ng ch\u1ec9 \u1edf t\u00ednh l\u1edbn kh\u1ed5ng l\u1ed3, v\u1edbi \u0111\u1ee7 m\u1ecdi ki\u1ec3u d\u1eef li\u1ec7u, nh\u01b0ng n\u00f3 c\u0169ng thay \u0111\u1ed5i r\u1ea5t nhanh. N\u1ebfu b\u1ea1n kh\u00f4ng th\u1ec3 thu th\u1eadp, ki\u1ec3m so\u00e1t, ph\u00e2n t\u00edch v\u00e0 ra quy\u1ebft \u0111\u1ecbnh v\u1ec1 n\u00f3 th\u00ec ai \u0111\u00f3 s\u1ebd l\u00e0m. Trong kinh doanh c\u1ea1nh tranh to\u00e0n c\u1ea7u n\u00e0y, \u0111\u00f3 l\u00e0 kh\u00e1c bi\u1ec7t gi\u1eefa ng\u01b0\u1eddi th\u1eafng v\u00e0 k\u1ebb thua. C\u00e1c nh\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u l\u1edbn ph\u1ea3i h\u1ecfi nh\u1eefng c\u00e2u h\u1ecfi n\u00e0y: Ch\u00fang ta ph\u00e2n t\u00edch c\u00e1c d\u1eef li\u1ec7u n\u00e0y th\u01b0\u1eddng xuy\u00ean th\u1ebf n\u00e0o? C\u1ee9 m\u01b0\u1eddi ph\u00fat? H\u00e0ng gi\u1edd? Hay h\u00e0ng ng\u00e0y? Khi n\u00e0o d\u1eef li\u1ec7u l\u00e0 kh\u00f4ng h\u1ee3p th\u1ee9c? Ch\u00fang ta s\u1ebd l\u00e0m g\u00ec v\u1edbi d\u1eef li\u1ec7u l\u1ea1c h\u1eadu? L\u00e0m sao ch\u00fang ta bi\u1ebft?<\/p>\n

 <\/p>\n

—English version—<\/p>\n

 <\/p>\n

Velocity of Big Data<\/p>\n

A developer wrote to me: \u201cI enjoy your blogs on Big Data. I understand the volume of Big Data; the variety of data such as structured and unstructured, but I do not understand the velocity issue. Please explain.\u201d<\/p>\n

 <\/p>\n

Answer: There are three key elements of Big Data (The three V: Volume, Variety and Velocity.) Velocity means the data changes and grows fast. It is getting bigger and bigger with time. For example, people add data into their websites all the time and it grows quickly. Stock market transactions move billion or trillions of dollars every few seconds. Weather sensors measure change in temperature every few minutes. YouTube adds streaming videos every five minutes. Not only these data requires huge storage but it changes so fast and makes the analysis so difficult. You must collect and analyze these data in \u201cReal time\u201d or else it loses the meaning. For example, if you monitor stock market trends based on yesterday data then you may miss something due to your \u201cout of date\u201d information.<\/p>\n

The challenge of Big Data, not just it is huge, with all types of data, but it is also changing very fast. If you cannot collect, control, analyze, and make decision on it then somebody will. In global competition business, that is the difference between winner and loser. Big data analysts must ask these questions: How often do we analyze these data? Every ten minutes? Every hour? Or every day? When is the data being invalid? What are we going to do with out of date data? How do we know?<\/p>\n","protected":false},"excerpt":{"rendered":"

M\u1ed9t ng\u01b0\u1eddi ph\u00e1t tri\u1ec3n vi\u1ebft cho t\u00f4i: \u201cEm th\u00edch blog c\u1ee7a th\u1ea7y v\u1ec1 Big Data. Em hi\u1ec3u kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a Big Data; s\u1ef1 \u0111a d\u1ea1ng … <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30,36,26],"tags":[],"class_list":["post-3396","post","type-post","status-publish","format-standard","hentry","category-hoi-va-dap","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\/3396","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=3396"}],"version-history":[{"count":4,"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts\/3396\/revisions"}],"predecessor-version":[{"id":3398,"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts\/3396\/revisions\/3398"}],"wp:attachment":[{"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3396"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3396"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3396"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}