一个简单的示例:基于Web的质数生成器。
清单5展示了重构的质数检验器。
清单10显示了重构的质数检验器。
这也是质数非常有用的关键。
目前总共只有49个已知的梅森质数。
例如数学中的原子,质数。
质数是什么?
产生劣质数据的根源在于缺乏透明度和问责制。
There is no transparency and accountability, and this is the root cause of bad data.
阅读一系列的质数就像是盯着一大堆的天文数字。
Reading through a list of primes is like staring at hieroglyphs.
例如17就是质数,因为它只能被1和17整除。
The number 17, for example, is prime, because it is divisible only by 1 and 17.
BlastP是用于在蛋白质数据库中搜索类似序列的。
BlastP is used for searching protein databases for similar sequences.
有一个关于老煤矿工不需要地质数据来发现煤矿点的故事。
There's a story about an old coal miner who didn't need geologic data to find coal deposits.
正因为他们非常难把握,质数成为我们现代信息安全的基础。
It is their difficulty to grasp that makes primes the basis for our modern information security.
把来自异质数据源的适当视图转变为非结构数据是非常复杂的。
Getting the right view into unstructured data from heterogeneous sources can be quite tricky.
地质数据拥有的线索会让我们了解现在的冰川流失将会如何终结。
The geological record holds clues to understand how the current ice loss will play out.
许多数字,甚至是一些质数,只要它们不是偶数,也让人感觉相当“圆满”。
Many numbers, even some prime numbers, if they are not even, they still feel "round.
基于蛋白质数据的固有特点,我们设计了一种优化的混合数据库模式。
Based on the intrinsic characteristics of the protein data, we have designed an optimized hybrid database schema.
严格地说,这些项目反映了除业务性能降低之外还有劣质数据的损失。
Strictly speaking, these projects represent a cost of bad data in addition to degradation of business performance.
整数越大,质数出现的频率会降低,但总是会有一个更大的质数出现。
As integers get bigger, prime Numbers become rarer, but there is always a bigger prime number to be found.
首先 选择两个很大的质数“p”和“q”,并对他们求积得到“n=p*q”。
当我隔离和移除重复代码后,数字分类器和质数检验器就变得更简单了。
Once I've isolated and removed the duplicated code, both the number classifier and the prime-number tester are much simpler. Listing 4 shows the refactored number classifier.
黄土高原数据仓库系统以分布式数据仓库为核心,包含多个异质数据源。
The Loess Plateau data warehouse system is a distributed data warehouse including several heterogeneous da-ta sources.
在primes.jsp页面中,你会看到很多用于质数生成的不同参数。
page you’ll see a number of different parameters for determining how to generate prime numbers.
一旦提取了该类之后,我就能通过同时重构函数分类器和质数检验器来使用它。
Once I have extracted this class, I can refactor both the functional classifier and prime-number tester to use it.
但是,当数组容量不是质数时,这种关键字的分布还是能够导致数据的聚集。
On the other hand, certain kinds of key distributions can cause data to cluster when the array size is not a prime number.
关系模型的大部分功能都来自于这样一个事实:关系表是代表同质数据集合的单一数据结构。
Much of the power of the relational model comes from the fact that the relational table is the single data structure that represents homogeneous collections of data.
但IT部门一般无权命令数据提供者应从整个组织的利益出发,付出一定代价来提供优质数据。
But it typically doesn't have the authority to address the root cause by telling data providers to bear the cost of good data for the benefit of the entire organization.
例如7和17这样的质数是所有数字的基石,因为每一个数字的组成都是把这些质数相成而得的。
Indivisible Numbers such as seven and 17 are the building blocks of all Numbers because every number is built by multiplying these primes together.
例如7和17这样的质数是所有数字的基石,因为每一个数字的组成都是把这些质数相成而得的。
Indivisible Numbers such as seven and 17 are the building blocks of all Numbers because every number is built by multiplying these primes together.
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