Linux command

sync local files to remote server:

rsync -avz ./health_care gao27@burrow.soic.indiana.edu://nfs/nfs4/home/gao27/health_care

sync remote server files to local:

rsync -avz gao27@burrow.soic.indiana.edu://nfs/nfs4/home/gao27/health_care ./


/usr/libexec/java_home -verbose can return all javas in your computer


把一个文件的前十行 存到另外一个文件中

sed -n -e '1,10p' test.csv > sample.csv

ps aux 指令详解
https://blog.csdn.net/hanner_cheung/article/details/6081440

df -h 查看分区剩余容量

d -i 查看index的剩余容量

du -h -d 1 查看当前文件夹大小

vim 的教程：
https://harttle.land/2015/11/07/vim-cursor.html


使用&和wait改造
在每个进程中使用&符号进行让脚本在后台运行，无需等待当前进程结束。
为了确保每个进程都执行完成，最后务必使用wait关键字，用来确保每一个子进程都执行完成。
[root@artisan test]# cat call_parallel.sh
#!/bin/bash
#当前目录下执行如下脚本  相对路径
./1.sh &
./2.sh &
wait
echo "继续执行剩下的逻辑..."
[root@artisan test]#

文件重命名：https://www.cnblogs.com/longdouhzt/archive/2012/04/30/2477282.html

genetic algorithm

https://segmentfault.com/a/1190000004155021
http://blog.sina.com.cn/s/blog_4cde15140100gi2u.html
http://blog.csdn.net/v_JULY_v/article/details/6132775

http://arxiv.org/pdf/cond-mat/0501368.pdf
https://www.researchgate.net/profile/Clara_Pizzuti/publication/220739952_Community_detection_in_social_networks_with_genetic_algorithms/links/542ea6a50cf277d58e8ed068.pdf
https://arxiv.org/pdf/cond-mat/0604419.pdf

https://www.researchgate.net/profile/Clara_Pizzuti/publication/221417662_A_Multi-objective_Genetic_Algorithm_for_Community_Detection_in_Networks/links/542ea6a10cf29bbc126f39d9.pdf

http://see.xidian.edu.cn/iiip/mggong/down/PHYSA2012Gong.pdf
http://arxiv.org/pdf/cond-mat/0501368.pdf

https://pdfs.semanticscholar.org/c342/c914dff35d6630c5963a54e3a07adf84f44f.pdf
..........
http://arxiv.org/pdf/cond-mat/0308217.pdf
network modularity

During initial population creation, each node is assigned a random community identifier. However we need a mechanism to give a bias for initial placement of nodes into communities. If two nodes are to be in the same community, they should have connectivity with each other; in the simplest case they might be neighbors. From this assumption, after assigning random community IDs to nodes, we randomly select some nodes and assign their community IDs to all of their neighbors. This bias in the initial population creation improves the convergence of the algorithm and eliminates unnecessary iterations.

java issue

multi-thread

java & python machine learning package

mellet
weka
lemur
gephi

learning to rank

Classic machine learning algorithm

PCA
LDA
LSA
matrix factorization
EM
SVM
Random forest


其他：
KMP算法
Hash表算法

GA&SA

GA:
genetic algorithm
SA:
simulation annealing

java 刷题

1. singleton syncryize and voletile 的东西 线程部分的

Elipse change shortcut

1. preference -> general ->keys to change the shortcut.
2. open declaration (函数定位到源文件) command + 1 牢记！！

代码格式

command+shift+F 代码格式