xuefliang

conda update --all sudo pip freeze --local | grep -v '^\-e' | cut -d = -f 1  | xargs pip install -U

library(Matrix) A <- matrix(1:18,3,6) #求秩 rankMatrix(A) #奇异值分解 svd(A) #特征值分解（方阵） B <- matrix(1:9,3) eigen(B) library(numDeriv) sc2.f <- function(x){   n <- length(x)   sum((1:n) * (exp(x) - x)) / n } sc2.g <- function(x){   n <- length(x)   (1:n) * (exp(x) - 1) / n } x0 <- rnorm(5) hess <- hessian(func=sc2.f, x=x0) hessc <- hessian(func=sc2.f, x=x0, "complex") all.equal(hess, hessc, tolerance = .Machine$double.eps) #  Hessian = Jacobian of the gradient jac  <- jacobian(func=sc2.g, x=x0) jacc <- jacobian(func=sc2.g, x=x0, "complex") all.equal(hess, jac, tolerance = .Machine$double.eps) all.equal(hessc, jacc, tolerance = .Machine$double.eps)

library(dplyr) library(data.table) library(lubridate) library(jsonlite) library(tidyr) library(ggplot2) library(compare) spending=fromJSON("https://data.medicare.gov/api/views/nrth-mfg3/rows.json?accessType=DOWNLOAD") names(spending) meta=spending$meta hospital_spending=data.frame(spending$data) colnames(hospital_spending)=make.names(meta$view$columns$name) hospital_spending=select(hospital_spending,-c(sid:meta)) #dplyr包，Get a glimpse of your data glimpse(hospital_spending) cols = 6:11; # 需要改变数据类型的列 hospital_spending[,cols] <- lapply(hospital_spending[,cols],as.character) hospital_spending[,cols] <- lapply(hospital_spending[,cols],as.numeric) cols = 12:13; # 需要纠正的两列 hospital_spending[,cols] <- lapply(hospital_spending[,cols],as.POSIXct) #检查下数据列是否是我们想要的数据类型 sapply(hospital_spending, class) #使用data.table函数创建data.table类型数据 hospital_spending_DT = data.table(hospital_spending) class(hospital_spending_DT) #选取一个变量 from_dplyr = select(hospital...

1、下载anaconda(https://www.continuum.io/downloads) 2、 bash Anaconda2-4.0.0-Linux-x86_64.sh 3、  pip install 包名，或者conda install 包名，查看 pip list 或者conda list

一、安装驱动 sudo apt-get install nvidia-352 nvidia-settings GPU支持 (https://developer.nvidia.com/cuda-gpus) 二、安装CUDA和Digits CUDA_REPO_PKG=cuda-repo-ubuntu1404_7.5-18_amd64.deb && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/$CUDA_REPO_PKG && sudo dpkg -i $CUDA_REPO_PKG ML_REPO_PKG=nvidia-machine-learning-repo_4.0-2_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/$ML_REPO_PKG && sudo dpkg -i $ML_REPO_PKG apt-get update apt-get install digits 三、打开您的浏览器并访问http://localhost

sudo add-apt-repository ppa:darklordpaunik8880/darkminttrustytahr sudo apt-get update sudo apt-get install maltego

1、sudo apt-get install  gcc g ++ binutils patch bzip2 flex bison make autoconf gettext texinfo unzip sharutils subversion libncurses5 - dev ncurses - term zlib1g - dev gawk git libssl - dev ccache 2、sudo vim /etc/profile #将sdk下staging_dir/host/bin和toolchain/bin目录添加  export PATH=${PATH}:/home/xuefliang/Downloads/OpenWrt-SDK-15.05.1-ar71xx-generic_gcc-4.8-linaro_uClibc-0.9.33.2.Linux-x86_64/staging_dir/toolchain-mips_34kc_gcc-4.8-linaro_uClibc-0.9.33.2/bin:/home/xuefliang/Downloads/OpenWrt-SDK-15.05.1-ar71xx-generic_gcc-4.8-linaro_uClibc-0.9.33.2.Linux-x86_64/staging_dir/host/bin source /etc/profile make menuconfig 在Network里面选中shadowsocks-libev，选择编译成模块就可以了，也就是前面一个M，空格键选择。 然后直接推出保存设置。 开始编译。 3、make package/openwrt-shadowsocks/compile V=s