生命组学 进化方向有以下四个特性:Robustness:变稳定,比如杀虫剂最大浓度也有杀不死的虫子.Variability易变性与Diversification多样性,容易变多和变多.Complexity:变复杂,比如人的祖先是鱼. 生命起源可能是分子之间自组装,先有RNA与protein的组合,在找到DNA之后,发现DNA稳定性好,于是保留下来. 具有年代隔离的生物作为模式生物是最好的选择. 鸟类有两套染色体,一大一小.…

The Brain vs Deep Learning Part I: Computational Complexity — Or Why the Singularity Is Nowhere Near July 27, 2015July 27, 2015 Tim Dettmers Deep Learning, NeuroscienceDeep Learning, dendritic spikes, high performance computing, neuroscience, singula…

Instant Complexity Time Limit: 1000MS Memory Limit: 10000K Description Analyzing the run-time complexity of algorithms is an important tool for designing efficient programs that solve a problem. An algorithm that runs in linear time is usually much f…

Runtime Complexity of .NET Generic Collection   I had to implement some data structures for my computational geometry class. Deciding whether to implement the data structures myself or using the build-in classes turned out to be a hard decision, as t…

O(1):constant - the operation doesn't depend on the size of its input, e.g. adding a node to the tail of a linked list where we always maintain a pointer to the tail node.int i=0;i++;++i;i+=6; O(n):linear - the run time complexity is proportionate to…

这一章比较短! 空间复杂度(space complexity)和辅助空间(auxiliary space)经常混用,下面是正确的辅助空间和空间复杂度的定义 辅助空间:算法需要用到的额外或者暂时的存储空间. 空间复杂度:是指算法所需要的所有存储空间,这是跟输入数据的大小决定的.空间复杂度包括辅助空间和保存输入的存储空间. 如果我们想比较几个标准的排序算法所需要的空间,那么用辅助空间来分析会比空间复杂度好.归并排序用了O(n)的辅助空间.而插入排序和堆排序用的O(1)的辅助空间.但是他们这些算法的空…

Instant Complexity Time Limit : 2000/1000ms (Java/Other)   Memory Limit : 20000/10000K (Java/Other) Total Submission(s) : 8   Accepted Submission(s) : 7 Problem Description Analyzing the run-time complexity of algorithms is an important tool for desi…

THE ARCHITECTURE OF COMPLEXITY HERBERT A. SIMON* Professor of Administration, Carnegie Institute of Technology (Read April 26, 1962)…

T(n)=aT(n/b)+f(n); where we can interpret n/b to mean either floor(b/n) or ceil(b/n), Then T (n) has the following asymptotic bounds: 1. If f (n)= O(nlogb a-c) for some constant c> 0, then T (n)=Θ(nlogb a)2.If f (n)= Θ(nlogb a), then T (n)=Θ(nlogb a…

鲁棒性是 Robustness 的音译,是指当系统受到不正常干扰时,是否还能保证主体功能正常运作.可参考 维基百科:http://zh.wikipedia.org/zh/ 鲁棒性 _( 计算机科学 ). 鲁棒是Robust的音译,也就是健壮和强壮的意思.它是在异常和危险情况下系统生存的关键.比如说,计算机软件在输入错误.磁盘故障.网络过载或有意攻击情况下,能否不死机.不崩溃,就是该软件的鲁棒性.所谓“鲁棒性”,是指控制系统在一定(结构,大小)的参数摄动下,维持其它某些性能的特性.根据对性能的不同…