The natural number coding, the random population selection, the simple crossover strategy of "two-parents-and-one-kid" and the fixed mutation probability were totally adopted.

在算法中采用了自然数编码、随机选取种群、简单的“双亲单子”交叉策略和固定的突变概率。

youdao

Thus, any random changes in the interior, fledgling ribozymes that could speed up nucleic acid replication rates will spread rapidly through an evolving population.

这样一来，细胞内部发生的使得核酶加速核酸复制速率的任何变化，都会在进化群体中快速扩散。

youdao

Although random sampling used for many surveys fails to cover large segments of the population, the procedure nonetheless offers insight into voting and consumption patterns.

虽然许多调查所用的随机取样不能覆盖大部分人口，但是这一过程使人们能更深刻地理解选举和消费的模式。

youdao

Well, a cross-sectional study would mean that you'd get a random group of the population and measure them in 1970 and then take another random group five years later and measure them, but it wouldn't be the same people necessarily, it would be different groups of people.

那么,横断面研究就是,1970年你在人群中随意选择一组人,并记录下相关数据,然后,五年后再随意选择一组人记录数据,但这不需要是同一组人,通常是不同的人

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And the other thing you can do is take self reports like the ones you're doing, hopefully do enough of them, and a random enough sample of the population, that you can extrapolate from that sample to the whole population, and try to estimate what people are eating in that way.

还有其他可以做的,比如大家正在做的这种个体调查,希望能把它做的充分些,如果有充足的随机样本,就可以从样本推断出,整个总体,从而推断哪类人有这样的饮食习惯

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So, although there have been controversial cases usually those that have ignored the fact that people from the same ethnic group share particular genetic signatures more often than people drawn at random from the population finding the right signatures in a sample generally does mean you're nicked.

ECONOMIST: Murder must advertise

However, people are unlikely to confess to breaking the law, and tax inspectors do not usually check on a random sample of the population.

ECONOMIST: The informal economy is neither small nor benign

Archaeologists finds are selected sites, castles, villas, but some of the best information is from the random finds, random losses from the population in the past.

BBC: Watching the detectorists