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Autoencoders and Sparsity(二)
In this problem set, you will implement the sparse autoencoder algorithm, and show how it discovers that edges are a good representation for natural i...
分类:其他好文   时间:2014-09-14 16:33:07    阅读次数:185
Java中Collections类的排序sort函数两种用法 (转http://viver120.blog.163.com/blog/static/60072482013010111228695/)
java中的Colletions类主要实现列表List的排序功能。根据函数参数的传递,具体的排序可以分为 :1. 自然排序(natural ordering)。函数原型:sort(Listlist)说明:参数是要参与排序列表的List对象 ...
分类:编程语言   时间:2014-09-10 08:21:30    阅读次数:261
POJ 1845 Sumdiv
Description Consider two natural numbers A and B. Let S be the sum of all natural divisors of A^B. Determine S modulo 9901 (the rest of the division of S by 9901). Input The only line contains the ...
分类:其他好文   时间:2014-09-03 16:50:26    阅读次数:271
HackerRank "Maximizing XOR"
A natural thought is brutal-force. But as you may have already thought of, there must be a smarter one. And yes there is.Think like this: XOR gives yo...
分类:其他好文   时间:2014-08-28 13:16:19    阅读次数:832
ZOJ - 1136 Multiple (同余+BFS)
Description a program that, given a natural number N between 0 and 4999 (inclusively), and M distinct decimal digits X1,X2..XM (at least one), finds the smallest strictly positive multiple of N that ...
分类:其他好文   时间:2014-08-26 21:34:06    阅读次数:342
数据库连接整理
连接可以分为内连接、外连接、交叉连接、自连接。 1.       Cross join 1)  支持的数据库:ORACLE、MYSQL、SQLServer、DB2 。 2)  功能说明:交叉连接返回结果包含了所连接两表的记录两两组合。其返回结果所包含记录数为两表满足条件记录行数的乘积。CROSS JOIN 后限制条件只能用WHERE 不能用ON。 3)  底层实现和性能:CROSS...
分类:数据库   时间:2014-08-26 17:25:07    阅读次数:302
OpenCASCADE Curve Length Calculation
Abstract. The natural parametric equations of a curve are parametric equations that represent the curve in terms of a coordinate-independent parameter...
分类:其他好文   时间:2014-08-25 22:34:44    阅读次数:298
UVA - 11481 Arrange the Numbers
Consider this sequence {1, 2, 3, … , N}, as a initial sequence of firstN natural numbers. You can rearrange this sequence in many ways. Therewill be N! different arrangements. You have to calculate t...
分类:其他好文   时间:2014-08-23 15:27:01    阅读次数:202
POJ1844 Sum
Sum Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 10160   Accepted: 6674 Description Consider the natural numbers from 1 to N. By associating to each num...
分类:其他好文   时间:2014-08-22 17:55:49    阅读次数:179
UVA - 11038 How Many O's? (计数)
Description Problem E: How many 0's? A Benedict monk No. 16 writes down the decimal representations of all natural numbers between and including m and n, m ≤ n. How many 0's will he write down? ...
分类:其他好文   时间:2014-08-20 19:42:02    阅读次数:224
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