小编SuY*_*uYo的帖子

尝试在R中安装插入符包时,我遇到以下错误

     g++: error: /tmp/Rtmp2Tos7n/R.INSTALL2e6e30153a74/nloptr/nlopt-2.4.2/lib/libnlopt_cxx.a: 
No such file or directory make: *** [nloptr.so] Error 1

    ERROR: compilation failed for package ‘nloptr’
    * removing ‘/rmt/csfiles/pgrads/mava290/R/x86_64-suse-linux-gnu-library/3.1/nloptr’
    Warning in install.packages :
      installation of package ‘nloptr’ had non-zero exit status
    ERROR: dependency ‘nloptr’ is not available for package ‘lme4’
    * removing ‘/rmt/csfiles/pgrads/mava290/R/x86_64-suse-linux-gnu-library/3.1/lme4’
    Warning in install.packages :
      installation of package ‘lme4’ had non-zero exit status
    ERROR: dependency ‘lme4’ is not available for package ‘pbkrtest’
    * removing ‘/rmt/csfiles/pgrads/mava290/R/x86_64-suse-linux-gnu-library/3.1/pbkrtest’
    Warning in install.packages :
      installation of package ‘pbkrtest’ had …

我想用 aes 256 加密加密我的 postgreSQL 数据库中的 area_code 列。这是发生的事情.. 我能够轻松地加密它，但我无法解密它。

这是工作正常的加密查询：

update mytable t1 set area_code = t2.area_code from (select pgp_sym_encrypt(area_code,'Password', 'compress-algo=1, cipher-algo=aes256') as area_code,area_name from mytable) t2 where t1.area_name = t2.area_name;

但是，如果我给出类似的内容，解密查询似乎不起作用

update mytable t1 set area_code = t2.area_code from (select pgp_sym_decrypt(area_code,'Password') as area_code,area_name from mytable) t2 where t1.area_name = t2.area_name;

甚至当我尝试查看解密的 area_code 时

select pgp_sym_decrypt((select area_code from ci), 'Password') ;

唯一有效的是当我使用单个记录并直接输入加密文本作为输入时。

select pgp_sym_decrypt('aes.encrypted.string.given.as.input', 'Password') ;

我是神经网络的新手,并且正在尝试使用一些大数据集.有没有办法将所有输入变量都包含在网络中而无需键入所有名称？例如,我有大约30个变量,我想用它们来预测输出.以下命令是否有快捷方式？

net <- neuralnet(Output~Var1+Var2+Var3+Var4+.....upto Var30, data, hidden=0)

我到处寻找,但无法找到解决方案.对不起,如果这是一个基本问题!