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Binary Classification
即使你之前了解过逻辑回归，我认为这里还是有些新的、有趣的东西等着你去发现和了解，所以现在开始进入正题逻辑回归是一个用于二分类($binary classification$)的算法。 首先我们从一个问题开始说起，假如你有一张图片作为输入，比如这只猫，如果识别这张图片为猫，则输出标签1作为结果； 如果识别出不是猫，那么输出...
868. Binary Gap
descriptiondifficulty：easy tag： mathgiven a positive integer n,find and return the longest distance between two consecutive 1s in the binaryrepresentation of n.if there arent two consecutive 1s, return 0.example 1:input: 22output: 2explanation:22 in binary is 0b10110.in the binary ...
BinaryTree二叉树
二叉树(binary tree),是每个结点最多有2个的有序树(tree） 。 简单的理解，就是一种类似于我们生活中树的结构，只不过每个结点上都最多只能有两个子结点。 顶上的叫根结点，两边被称作“左子树”(left child)和“右子树”(right child)满二叉树一个二叉树所有非叶子节点都存在左右子树，并且所有的叶子节点都在同一...
Binary Tree Paths
solutionrecursive** * definition for a binary tree node. * struct treenode{ * int val; * treenode *left; * treenode *right; * treenode(int x) : val(x), left(null), right(null) {} * }; *class solution {public: vector binarytreepaths(treenode* root){ vector result; if(root == null) { return ...
Special Binary String
special binary string problem:special binary strings are binary strings with the following two properties:the number of 0’s is equal to the number of 1’s. every prefix of the binarystring has at least as many 1’s as 0’s. given a special string s,a move consists of choosing two consecutive...
Binary String Matching
binary string matching描述given two strings a and b,whose alphabet consist only ‘0’ and ‘1’. your task is only to tell howmany times does a appear as a substring of b? for example,the text string b is ‘1001110110’ while the pattern string a is‘11’, you should output 3, because the ...
Leetcode: Add Binary
题目： given two binary strings,return their sum (also a binary string).for example,a = “11” b = “1” return “100”. 分析： 思路一：刚开始我想的是将a和b转成数字，然后相加，结果在转成二进制字符。 这种方法在a和b长度比较小的时候可行，a和b太长的时候，转成数字int或者long类型就装不下了...
Bags of Binary Words | 词袋模型解析
bags of binary words for fast place recognition in image sequences 作者：liam原来论文中很详细的讲述了闭环和重定位过程中的操作，当看对应代码的时候，最好先看看这些过程的说明。? 摘要本文提出了一种利用fast+brife得到的单词包进行视觉位置重识别的新方法。 首先离散化二进制描述符空间生成一个词汇树，然后...
MergeSortBinarySearch
return value}print(mergesort(array: ))```merge 算法跟数据的是否有序无关，都要将每个数据遍历一遍才能达到排序的目的其思想是分而治之逐渐有序，先拆分然后，卓段排序然后逐渐拼接合并，最终整体有序#折半查找binarysearch**折半查找是有查找前提的：序列必须有序 效率为log2(n)**对于折半查找有个很有趣的故事...
String - 67. Add Binary
add binarygiven two binary strings,return their sum (also a binary string).the input strings are both non-emptyand contains only characters 1 or 0.example 1:input: a = 11, b = 1output:100example 2:input: a = 1010, b = 1011output: 10101思路：题目是意思是实现二进制加法，给定两个二进制字符串...
聊聊BinaryLogFileReader
序本文主要研究一下binarylogfilereaderbinarylogfilereadermysql-binlog-connector-java-0. 20. 1srcmainjavacomgithubshyikomysqlbinlogbinarylogfilereader.javapublic classbinarylogfilereader implements closeable { public static final byte{(byte)0xfe, (byte) 0x62, (byte) 0x69, (byte) 0x6e}; private ...
聊聊BinaryLogFileReader
序本文主要研究一下binarylogfilereadermysql-replication-overview-phptek-2016-29-638.jpgbinarylogfilereadermysql-binlog-connector-java-0. 20. 1srcmainjavacomgithubshyikomysqlbinlogbinarylogfilereader.javapublic classbinarylogfilereader implements closeable { public static final byte{(byte)...
Diameter of Binary Tree
solution** * definition for a binary tree node. * struct treenode{ * int val; * treenode *left; * treenode *right; * treenode(int x) : val(x), left(null), right(null) {} * }; *class solution {public: int diameterofbinarytree(treenode* root) { if(!root){ return 0; } int diameter = 0; dfs(root, ...
深度学习算法优化系列九 | NIPS 2015 BinaryConnect
论文提出binaryconnect将用于前向传播和后向传播计算的实数权值二值化为,从而将这些乘法运算变为加减运算。 这样即压缩了网络模型大小，又加快了速度。 论文提到，sgd通过平均权重带来的梯度来得到一些小的带噪声的步长，尝试更新权重去搜索参数空间，因此这些梯度非常重要，要有足够的分辨率，sgd至少需要6—8bits的...
Validate Binary Search Tree
solutionrecurrent** * definition for a binary tree node. * struct treenode{ * int val; * treenode *left; * treenode *right; * treenode(int x) : val(x), left(null), right(null) {} * }; *class solution {public: bool isvalidbst(treenode* root){ return validate(root, nullptr, nullptr); } private...
Add Binary二进制求和
class solution(object): def addbinary(self, a, b): :type a: str :type b: str :rtype: str result = ) # 从最后一位开始取 if i < lenb: val += int(b) print val,carry carry = val 2 val = val % 2 # 注意坑：注意这里val变化了，必须放下面 print val, carry result.append(str(val)) if carry:result.append...
编译安装 IgBinary 扩展
load igbinary extensionextension=igbinary.so ; use igbinary as session serializersession.serialize_handler=igbinary ; enable or disable compacting of duplicate strings; the default is on.igbinary.compact_strings=on ; if uncommented, use igbinary as the serializer of apcu; (apcu 5.1.10 or newer...
leetcode 67 Add Binary
add binary total accepted: 46815 total submissions:189215 my submissions given two binary strings,return their sum (also a binary string). for example, a = 11 b = 1 return 100. ?我的解决方案： class solution {public: string addbinary(string a, string b){ string result = ; int c = 0; int i = a...
Leetcode 67. Add Binary
https:blog.csdn.netquincuntialarticledetails82693764 文章作者：tyan 博客：noahsnail.com | csdn | 简书1. description? 2. solutionversion 1class solution {public: string addbinary(string a, string b){ reverse(a.begin(), a.end()); reverse(b.begin(), b.end()); int min = 0; int max = 0; int carry =...
leetcode: 67. Add Binary
problem# given two binary strings, return their sum (also a binary string). ## for example,# a = 11# b = 1# return 100.acclass solution():def addbinary(self, a, b):num = int(a, 2) + int(b, 2) return bin(num) if __name__ == __main__:assert solution().addbinary(11, 1) == 100...
