ferryzhou

# $ jupyter notebook
# Right top, click New
# https://www.dataquest.io/blog/jupyter-notebook-tutorial/
# https://www.kaggle.com/janiobachmann/lending-club-risk-analysis-and-metrics

ferryzhou

# Download youtube to mp3
youtube-dl -f bestaudio -x --audio-format mp3 -o '%(playlist)s/%(playlist_index)s – %(title)s.%(ext)s' https://www.youtube.com/playlist?list=PLByf7LdMdgugN_3Jms9fjJpNV6rS_eB2N

# Download playlist
youtube-dl -o '%(playlist)s/%(playlist_index)s – %(title)s.%(ext)s' https://www.youtube.com/playlist?list=PLByf7LdMdgugN_3Jms9fjJpNV6rS_eB2N

# Cut videos
ffmpeg -i movie.mp4 -ss 00:00:03 -t 00:00:08 -async 1 cut.mp4

# Download from ustream to mp4 so even partially downloaded data can be used

ferryzhou

import numpy as np

# logistic regression.
# yi = sigmoid(dot(a * xi))

def sigmoid(x):
  return 1 / (1 + np.exp(-x))

N = 1000
M = 2

ferryzhou

import numpy as np

# A linear function.
# Ax = y
# Given A and y, solve x.
# Standard L2 loss function with l2 regularization.

N = 1000
M = 2
A = np.random.random((N, M))

ferryzhou

1. start restful api server

postgrest "host=localhost dbname=tnews" -a $(whoami) --schema public

1. serve the html

python -m SimpleHTTPServer 8080

ferryzhou

// Based on tutorial here:
//   https://itp.nyu.edu/physcomp/labs/labs-serial-communication/lab-serial-communication-with-node-js/
// Examples:
//   node test.js /dev/tty.Makeblock-ELETSPP

var serialport = require('serialport');
var SerialPort = serialport.SerialPort;
var portName = process.argv[2];
 
// turn led green

ferryzhou

// https://github.com/google/google-api-go-client

import (
        "golang.org/x/net/context"
        "golang.org/x/oauth2/google"
        "google.golang.org/api/compute/v1"
)

func main() {
        // Use oauth2.NoContext if there isn't a good context to pass in.

ferryzhou

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

ferryzhou

execute pathogen#infect()
syntax on
filetype plugin indent on
set number  
set backspace=2

set t_Co=256
set background=dark
colorscheme PaperColor

ferryzhou

curl -XPUT 'http://localhost:9200/_template/github-watch' -d @github-watch-mappings.json