Sandy4321

import random


def dirichlet(alpha):
    """Sample dirichlet-distributed vector from Dir(alpha)"""
    s = [random.gammavariate(a, 1) for a in alpha]
    norm = sum(s)
    return [d / norm for d in s]

Sandy4321

#
#   Simple Pure-Python Threefish-512 Encryption.
#   (No guarantee that this implementation is 100% correct!)
#
#   Use encrypt(text, key) and decrypt(text, key) for string encryption.
#
#   The cipher operates in CBC mode with a random tweak value.
#

from StringIO import StringIO

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"""
Bi-Term Topic Model (BTM) for very short texts.

Literature Reference:
  Xiaohui Yan, Jiafeng Guo, Yanyan Lan, and Xueqi Cheng:
  "A biterm topic model for short texts"
  In Proceedings of WWW '13, Rio de Janeiro, Brazil, pp. 1445-1456.
  ACM, DOI: https://doi.org/10.1145/2488388.2488514

This module requires pre-processing of textual data,

Sandy4321

import pandas as pd
from collections import Counter
import tensorflow as tf
from tffm import TFFMRegressor
from sklearn.metrics import mean_squared_error
from sklearn.model_selection import train_test_split
import numpy as np

# Loading datasets'

Sandy4321

Quick List of Resources for Topological Data Analysis with Emphasis on Machine Learning

This is just a quick list of resourses on TDA that I put together for @rickasaurus after he was asking for links to papers, books, etc on Twitter and is by no means an exhaustive list.

Survey Papers

Both Carlsson's and Ghrist's survey papers offer a very good introduction to the subject

• Topology and Data by Gunnar Carlsson
• Barcodes: The Persistent Topology of Data by Robert Ghrist

Other Papers and Web Resources

• Extracting insights from the shape of complex data using topology A good introductory paper in Nature on the Mapper algorithm.

Sandy4321

#region Using declarations
using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Xml.Serialization;
using NinjaTrader.Cbi;
using NinjaTrader.Data;
using NinjaTrader.Indicator;

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protected override void OnBarUpdate()
{
	if (Historical) return;Enumerable.Range(0,14).ToList().ForEach(i =>DrawText((CurrentBar+i).ToString(),"\u0CA0_\u0CA0",0, i % 2 == 0 ? (Close[0]+TickSize) + (TickSize*i) : (Close[0]-TickSize)-(TickSize*i),i % 2 == 0 ? Color.FromArgb(255 - (i*15),0, 0,255):Color.FromArgb(255 - (i*15),255, 0,0)));
}

Sandy4321

using System;
using System.ComponentModel;

namespace NinjaTrader.Indicator
{
    [Description("f")]
    public class derp : Indicator
	{
		IndicatorBase myEMA;
        protected override void Initialize()

Sandy4321

data = sqlContext.load("/home/rxin/ints.parquet")
data.groupBy("a").agg(col("a"), avg("num")).collect()

Sandy4321

# A simple cheat sheet of Spark Dataframe syntax
# Current for Spark 1.6.1

# import statements
from pyspark.sql import SQLContext
from pyspark.sql.types import *
from pyspark.sql.functions import *

#creating dataframes
df = sqlContext.createDataFrame([(1, 4), (2, 5), (3, 6)], ["A", "B"]) # from manual data