jpotts18

Python Machine Learning Setup (Python 2.7)

Install Python

Python is a widely used general-purpose, high-level programming language. Its design philosophy emphasizes code readability, and its syntax allows programmers to express concepts in fewer lines of code. The language provides constructs intended to enable clear programs on both a small and large scale.

Install Python on Windows

jpotts18

import uuid, random, json

# json.dumps(x, indent=4)

product_range = range(100000,110000)
num_recs_per_type = 20
num_users = 500000
user_ids = [ str(uuid.uuid1()) for _ in range(num_users) ]
rec_types = ['by_x','by_y','by_z']

jpotts18

class WebScraper

  def execute
    create_folders
    download_data
    parse_data
    write_output
  end
  
  def create_folder

jpotts18

# This gist is a continuation of a previous gist which defines the MorningAlgorithm class
# https://gist.github.com/jpotts18/1f4269c9e1f22c963a0d

class LateMorningAlgorith < MorningAlgorithm
  
  def work_out
    puts "Nope..."
  end
  
  def eat_breakfast

jpotts18

class MorningAlgorithm
  
  # This method is used to encapsulate the algorithm's general process.
  # Notice this method is not concerned how the methods are accomplished
  def execute
    wake_up
    workout
    eat_breakfast
    drive_to_work
  end

jpotts18

import json, urllib2, re, csv
import xml.etree.ElementTree as ET

patterns = {
	'YEAR': re.compile('(19|20)\d{2}'),
	'ZIP': re.compile('(\d{5})'),
	'MILES': re.compile('\d+,?(\d|X|k)+\smiles')
}

occurrences = {

jpotts18

package com.verdad.core;

import android.content.Context;

import com.google.gson.FieldNamingPolicy;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;

import java.util.HashMap;
import java.util.Map;

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class PizzaFactory
  
  def self.create_pizza(type)
    if type == 'Pepperoni'
      return PepperoniPizza.new
    if type == 'Greek'
      return GreekPizza.new
    end
  end
  

jpotts18

###########################
# Identify the question
###########################
Identify the question you are trying to solve

# Which car is the most undervalued?
# Are we trying to maximize or minimize a variable?

###########################
# Understand the data

jpotts18

Format

• Github Wiki
• Markdown

What it is? Why its important? When is it used? - In the wild How to implement it? - Single file demo

• Data Structures - http://www.amazon.com/Cracking-Coding-Interview-Programming-Questions/dp/098478280X - Byron