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@wpm
wpm / spark_parallel_boost.py
Last active December 3, 2018 02:56
A simple example of how to integrate the Spark parallel computing framework and the scikit-learn machine learning toolkit. This script randomly generates test and train data sets, trains an ensemble of decision trees using boosting, and applies the ensemble to the test set. The ensemble training is done in parallel.
from pyspark import SparkContext
import numpy as np
from sklearn.cross_validation import train_test_split, Bootstrap
from sklearn.datasets import make_classification
from sklearn.metrics import accuracy_score
from sklearn.tree import DecisionTreeClassifier
def run(sc):
@roooodcastro
roooodcastro / GraphPanel.java
Last active May 24, 2024 15:40
A simple Swing component to draw a Graph over a regular JPanel. Features a grid, customizable amount of hatch marks, axis labels,checking for minimum and maximum value to label correctly the Y-axis and customizable padding and label padding. Based on "Hovercraft Full Of Eels"'s answer on StackOverflow (http://stackoverflow.com/questions/8693342/…
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.RenderingHints;
import java.awt.Stroke;
import java.util.ArrayList;
#!/bin/sh
MONGODB_SHELL='mongo'
DUMP_UTILITY='mongodump'
#SET the bd name which one you want to backup
DB_NAME=''
#SET server path where you want to save the file
CLOUD_PATH=''
@ruckus
ruckus / statistics.sql
Created June 5, 2013 23:26
Postgres statistics queries
** Find commmonly accessed tables and their use of indexes:
SELECT relname,seq_tup_read,idx_tup_fetch,cast(idx_tup_fetch AS numeric) / (idx_tup_fetch + seq_tup_read) AS idx_tup_pct FROM pg_stat_user_tables WHERE (idx_tup_fetch + seq_tup_read)>0 ORDER BY idx_tup_pct;
Returns output like:
relname | seq_tup_read | idx_tup_fetch | idx_tup_pct
----------------------+--------------+---------------+------------------------
schema_migrations | 817 | 0 | 0.00000000000000000000
user_device_photos | 349 | 0 | 0.00000000000000000000
@jmyrland
jmyrland / test.js
Last active May 5, 2025 13:08
Socket-io load test?
/**
* Modify the parts you need to get it working.
*/
var should = require('should');
var request = require('../node_modules/request');
var io = require('socket.io-client');
var serverUrl = 'http://localhost';
@aheckmann
aheckmann / output
Last active January 21, 2020 10:12
Mongoose 3.6 population example
===========
mongoose version: 3.6.0rc0
========
dbname: testing_populateAdInfinitum
[ { title: 'blog 1',
author:
{ _id: 511bde3e3985283f25000004,
@gdamjan
gdamjan / README.md
Last active April 5, 2025 23:28
Setup for an easy to use, simple reverse http tunnels with nginx and ssh. It's that simple there's no authentication at all. The end result, a single ssh command invocation gives you a public url for your web app hosted on your laptop.

What

A lot of times you are developing a web application on your own laptop or home computer and would like to demo it to the public. Most of those times you are behind a router/firewall and you don't have a public IP address. Instead of configuring routers (often not possible), this solution gives you a public URL that's reverse tunnelled via ssh to your laptop.

Because of the relaxation of the sshd setup, it's best used on a dedicated virtual machine just for this (an Amazon micro instance for example).

Requirements

@suziewong
suziewong / git.md
Last active October 24, 2024 16:44
github的多人协作?how to 贡献代码?

github的多人协作

  1. github上你可以用别人的现成的代码 直接 git clone 即可了

  2. 然后你也想改代码或者贡献代码咋办?

Fork

@sharonbn
sharonbn / SslUtil.java
Last active August 21, 2022 05:48
SSL/TLS connection from Eclipse Paho Java client to mosquitto MQTT broker
import java.io.*;
import java.nio.file.*;
import java.security.*;
import java.security.cert.*;
import javax.net.ssl.*;
import org.bouncycastle.jce.provider.*;
import org.bouncycastle.openssl.*;
public class SslUtil
@sandfox
sandfox / README.md
Created September 15, 2012 23:01
Quick and dirty instructions for building nginx with rtmp support

#Compiling Nginx with RTMP module

  1. Install the following packages sudo apt-get install python-software-properties dpkg-dev git
  2. Add Nginx repo sudo add-apt-repository ppa:nginx/stable
  3. Update package list sudo apt-get update
  4. Get nginx source (put this in it's own dir like /build sudo apt-get source nginx-full