<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[zzm8421的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/zzm8421</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; zzm8421]]></copyright><item><title><![CDATA[Databricks 入门之连接外部数据库]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/134195862</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/134195862</guid><author>zzm8421</author><pubDate>Fri, 03 Nov 2023 09:50:04 +0800</pubDate><description><![CDATA[连接方式应该很多，现在记录本人目前学习到的一种方式。]]></description><category></category></item><item><title><![CDATA[Databricks 入门之sql（二）常用函数]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/132565493</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/132565493</guid><author>zzm8421</author><pubDate>Thu, 31 Aug 2023 11:19:49 +0800</pubDate><description><![CDATA[使用CAST函数转换数据类型（可以起别名）]]></description><category></category></item><item><title><![CDATA[Databricks 入门之sql（一）基础查询]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/131705184</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/131705184</guid><author>zzm8421</author><pubDate>Thu, 13 Jul 2023 16:49:04 +0800</pubDate><description><![CDATA[Databricks提供以spark sql的方式管理数据，本文记录最近学习到的常用sql。]]></description><category></category></item><item><title><![CDATA[Centos8 安装Mysql 官方文档版]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/120975088</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/120975088</guid><author>zzm8421</author><pubDate>Tue, 26 Oct 2021 20:23:26 +0800</pubDate><description><![CDATA[Centos8环境下的安装

官网文档地址

https://dev.mysql.com/doc/refman/8.0/en/linux-installation-yum-repo.html

安装步骤来自这官网的安装说明

1.第一步下载对应rpm文件并安装，下载地址：

https://dev.mysql.com/downloads/repo/yum/


sudo yum install mysql80-community-release-el8-1.noarch.rpm

查看Mysql相关的库信息]]></description><category></category></item><item><title><![CDATA[CrossEntroy的计算]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/119028285</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/119028285</guid><author>zzm8421</author><pubDate>Fri, 23 Jul 2021 14:25:21 +0800</pubDate><description><![CDATA[categorical_crossentropy用于多分类。

tensorflow2.0+中提供了计算方法：





y_true = tf.constant([[0,1,0],[0,0,1]])
# 这里的y_pred是经过softmax激活函数运算后的值
y_pred = tf.constant([[0.05,0.95,0],[0.1,0.8,0.1]])
# 如果y_pred不经过softmax激活函数，这里加上参数 from_logits=True
tf.keras.losses.categor]]></description><category></category></item><item><title><![CDATA[Tensorflow2 加载别人模型权重失败时的一种解决方法：每一层分别设置值]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/117446276</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/117446276</guid><author>zzm8421</author><pubDate>Tue, 01 Jun 2021 17:08:25 +0800</pubDate><description><![CDATA[有时自己建立模型导入别人模型参数时会因为版本等各个问题导致导入失败，这时可以一层一层的给网络赋值权重。

本人在加载某个模型的权重时
]]></description><category></category></item><item><title><![CDATA[转置卷积（Transposed convolution）（反卷积）在不同情况下的计算]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/106197858</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/106197858</guid><author>zzm8421</author><pubDate>Mon, 18 May 2020 20:28:02 +0800</pubDate><description><![CDATA[反卷积即卷积的逆运算，下面针对不同的卷积列出其对应的反卷积大小计算
ps: 卷积输出 o = (i+2p-k)/s +1
以下都是，输入、卷积核都是 nn为例
一、没有Padding，步长为1的卷积的反卷积
k,p=0,s=1的卷积
对应
反卷积：k’ = k,s’ = s,p’ = k-1 的卷积
其输出大小：o’ = i’ + (k-1)
例如：

输入为4 * 4，k=33，s=1，padding=0，输出为22的卷积，
其对应反卷积为：
2 * 2 经过padding’=2（得到66），k’=33,]]></description><category></category></item><item><title><![CDATA[Elasticsearch安装、单机与集群配置]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/103706185</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/103706185</guid><author>zzm8421</author><pubDate>Wed, 25 Dec 2019 22:15:04 +0800</pubDate><description><![CDATA[Centos7 系统
先装好JDK（我用的1.8）
elasticsearch 5.6.16
elasticsearch对JDK版本有要求
单机安装
elasticsearch官网下载地址
下载到linux下
我的目录是 /apps 下
elasticsearch需要普通用户启动，如果没有普通用户需要新建普通用户
#新建普通用户(这个我起名 zzm)
useradd zzm
# 为用户设置密码
p...]]></description><category></category></item><item><title><![CDATA[keepalived安装与简单配置]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/103702497</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/103702497</guid><author>zzm8421</author><pubDate>Wed, 25 Dec 2019 17:35:14 +0800</pubDate><description><![CDATA[系统 CentOs7
版本 keeplived 1.4.5
官网下载
keeplived官网下载地址
#解压
tar -zxvf keepalived-1.4.5.tar.gz
#进入目录
cd keepalived-1.4.5
#编译前配置
./configure
#编译并安装
make &amp;&amp; make install

此时在keepalived-1.4.5会生成安装后的文件
...]]></description><category></category></item><item><title><![CDATA[nginx安装与配置]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/103701530</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/103701530</guid><author>zzm8421</author><pubDate>Wed, 25 Dec 2019 16:56:30 +0800</pubDate><description><![CDATA[CentOs7 系统
安装
yum install nginx
配置
默认配置在 /etc/nginx/ 目录下
nginx提供了模板 nginx.conf.default
贴上我用的简单配置
此配置作用是将192.168.23.17:80 访问最终映射到
server 192.168.23.17:8080 ;
server 192.168.23.17:8081 ;
server 192.168....]]></description><category></category></item><item><title><![CDATA[部署Maven项目到tomcat报错：java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderLi]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/78580201</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/78580201</guid><author>zzm8421</author><pubDate>Mon, 20 Nov 2017 10:58:37 +0800</pubDate><description><![CDATA[问题背景：

工程为maven工程，ContextLoaderListener类位于spring-web-3.1.0.RELEASE.jar包中。检查了maven的pom.xml，依赖引入正常。在工程Maven Dependencies视图中也能看到spring-web-3.1.0.RELEASE.jar包被正常引入进来了。

 

错误原因：

进入到tomcat的部署路径.me]]></description><category></category></item><item><title><![CDATA[git使用方法-下载or上传代码到github--记录下防止忘了]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/78366183</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/78366183</guid><author>zzm8421</author><pubDate>Fri, 27 Oct 2017 16:17:47 +0800</pubDate><description><![CDATA[git的使用  简单教程]]></description><category></category></item><item><title><![CDATA[git 中文显示问题]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/78366035</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/78366035</guid><author>zzm8421</author><pubDate>Fri, 27 Oct 2017 16:07:27 +0800</pubDate><description><![CDATA[git上传代码到github时 git status 查看后有中文的话会显示不正常]]></description><category></category></item><item><title><![CDATA[数据连接池c3p0和druid的简单配置]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/78181297</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/78181297</guid><author>zzm8421</author><pubDate>Mon, 09 Oct 2017 12:21:48 +0800</pubDate><description><![CDATA[记录下数据连接池的简单配置使用数据连接池即：比如使用mybatis给其传入的dataSource用池来给相关配置]]></description><category></category></item><item><title><![CDATA[Linux系统下我的/etc/sysconfig/路径下无iptables文件]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/78083582</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/78083582</guid><author>zzm8421</author><pubDate>Mon, 25 Sep 2017 11:46:11 +0800</pubDate><description><![CDATA[虚拟机新装了一个CentOs7，然后做防火墙配置的时候找不到iptables文件，解决方法如下]]></description><category></category></item><item><title><![CDATA[springboot集成Redis]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/78062094</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/78062094</guid><author>zzm8421</author><pubDate>Fri, 22 Sep 2017 13:46:39 +0800</pubDate><description><![CDATA[sringboot集成redis。。。]]></description><category></category></item><item><title><![CDATA[Linux下的Redis的安装与配置]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/78053123</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/78053123</guid><author>zzm8421</author><pubDate>Thu, 21 Sep 2017 16:02:36 +0800</pubDate><description><![CDATA[Linux下安装Redis及相关配置 亲测可用]]></description><category></category></item><item><title><![CDATA[Springboot整合mybatis]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/78038904</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/78038904</guid><author>zzm8421</author><pubDate>Wed, 20 Sep 2017 11:29:40 +0800</pubDate><description><![CDATA[spring-boot整合mybatis]]></description><category></category></item><item><title><![CDATA[spring-boot 生成可执行jar报错：No compiler is provided in this environment]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/78027451</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/78027451</guid><author>zzm8421</author><pubDate>Tue, 19 Sep 2017 10:48:56 +0800</pubDate><description><![CDATA[jdk的环境变量，maven的环境变量，eclipse里的jdk配置都正常了，但是使用spring-boot 生成可执行jar包时仍然报错： No compiler is provided in this environment . Perhaps you are running on a jre rather than a JDK?]]></description><category></category></item><item><title><![CDATA[Java使用MulticastSocket实现组播]]></title><link>https://blog.youkuaiyun.com/zzm8421/article/details/77993664</link><guid>https://blog.youkuaiyun.com/zzm8421/article/details/77993664</guid><author>zzm8421</author><pubDate>Fri, 15 Sep 2017 16:54:40 +0800</pubDate><description><![CDATA[ip是组播的ip 和端口都可自己设定。这个类不断接收，控制台输入（scanner）可以发送。每启动一次，相当于向组播中加一个用户。发一个消息所有人接收。]]></description><category></category></item></channel></rss>