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O'Reilly Platform
book
数据压缩入门
by
Colt McAnlis
,
Aleks Haecky
April 2020
Intermediate to advanced
210 pages
4h 47m
Chinese
Posts & Telecom Press
Content preview from
数据压缩入门
1
第
1
章
并非无趣的一章
亲爱的读者,欢迎来到本书第
1
章,本书要讨论的主题在数据处理中有着重要的地位。这
一章将为你阅读本书后续内容打下基础(出版者这么说),并激发你的阅读兴趣。为了帮
助你以尽可能轻松平缓(又有趣)的方式进入数据压缩这一领域,出版者希望我们先介绍
一下数据压缩的历史、一些基础知识,还有其他任何我们能想到的内容——但不涉及数
学,因为数学很难
1
。
但是说实话,如果真那样做的话,不仅读者读起来无趣,作者写的时候也没意思。
所以,我们决定不那样做,而是根据自己的想法来写。本书的主题是数据压缩,而数据压缩
无非是用最紧凑的方式来表示数据。因此,我们会用最简短的篇幅来写这介绍性的第
1
章。
这一章首先介绍数据压缩算法,然后介绍克劳德
•
香农。他几乎毁了我们的生活,同时又
创造了我们所热爱的计算机的几乎所有重要方面。最后,这一章会介绍关于数据压缩你必
须知道的一件事。我们相信,通过这种方法,可以让你弄清楚数据压缩怎样使应用更好、
更便宜、更快。
亲爱的读者,就这样说定了,好吗?
1.1
5
类数据压缩算法
数据压缩算法其实是一个相当大的主题,好在我们可以对所有这些算法进行分类。分
类之后,这些算法理解起来也就更容易了。简单地说,数据压缩算法有
5
类:
变长编码
注
1
:
这是我们最后一次这样说。
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Publisher Resources
ISBN: 9787115534170