{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "WARNING: Base.FloatingPoint is deprecated, use AbstractFloat instead.\n",
      "  likely near /home/tom/.julia/v0.4/Qwt/src/widgets.jl:5\n",
      "WARNING: Base.String is deprecated, use AbstractString instead.\n",
      "  likely near /home/tom/.julia/v0.4/Glob/src/Glob.jl:13\n",
      "WARNING: Base.Uint32 is deprecated, use UInt32 instead.\n",
      "  likely near /home/tom/.julia/v0.4/Glob/src/Glob.jl:13\n",
      "WARNING: Base.String is deprecated, use AbstractString instead.\n",
      "  likely near /home/tom/.julia/v0.4/Glob/src/Glob.jl:13\n",
      "WARNING: Base.String is deprecated, use AbstractString instead.\n",
      "  likely near /home/tom/.julia/v0.4/Glob/src/Glob.jl:18\n",
      "WARNING: Base.String is deprecated, use AbstractString instead.\n",
      "  likely near /home/tom/.julia/v0.4/Glob/src/Glob.jl:18\n",
      "WARNING: Base.String is deprecated, use AbstractString instead.\n",
      "  likely near /home/tom/.julia/v0.4/Glob/src/Glob.jl:21\n",
      "WARNING: Base.String is deprecated, use AbstractString instead.\n",
      "  likely near /home/tom/.julia/v0.4/Glob/src/Glob.jl:21\n",
      "WARNING: Base.String is deprecated, use AbstractString instead.\n",
      "  likely near /home/tom/.julia/v0.4/Glob/src/Glob.jl:45\n",
      "WARNING: Base.String is deprecated, use AbstractString instead.\n",
      "  likely near /home/tom/.julia/v0.4/Glob/src/Glob.jl:120\n",
      "WARNING: Base.String is deprecated, use AbstractString instead.\n",
      "  likely near /home/tom/.julia/v0.4/Glob/src/Glob.jl:191\n",
      "WARNING: Base.String is deprecated, use AbstractString instead.\n",
      "  likely near /home/tom/.julia/v0.4/Glob/src/Glob.jl:274\n",
      "WARNING: Base.String is deprecated, use AbstractString instead.\n",
      "  likely near /home/tom/.julia/v0.4/Glob/src/Glob.jl:336\n",
      "WARNING: Base.String is deprecated, use AbstractString instead.\n",
      "  likely near /home/tom/.julia/v0.4/Glob/src/Glob.jl:338\n",
      "WARNING: Base.String is deprecated, use AbstractString instead.\n",
      "  likely near /home/tom/.julia/v0.4/Glob/src/Glob.jl:346\n"
     ]
    },
    {
     "ename": "LoadError",
     "evalue": "LoadError: LoadError: LoadError: ArgumentError: Calendar not found in path\nwhile loading /home/tom/.julia/v0.4/CTechCommon/src/CTechCommon.jl, in expression starting on line 9\nwhile loading /home/tom/.julia/v0.4/OnlineAI/src/OnlineAI.jl, in expression starting on line 9\nwhile loading In[1], in expression starting on line 1",
     "output_type": "error",
     "traceback": [
      "LoadError: LoadError: LoadError: ArgumentError: Calendar not found in path\nwhile loading /home/tom/.julia/v0.4/CTechCommon/src/CTechCommon.jl, in expression starting on line 9\nwhile loading /home/tom/.julia/v0.4/OnlineAI/src/OnlineAI.jl, in expression starting on line 9\nwhile loading In[1], in expression starting on line 1",
      "",
      " in require at ./loading.jl:233",
      " in include at ./boot.jl:261",
      " in include_from_node1 at ./loading.jl:304",
      " in require at ./loading.jl:243",
      " in include at ./boot.jl:261",
      " in include_from_node1 at ./loading.jl:304",
      " in require at ./loading.jl:243"
     ]
    }
   ],
   "source": [
    "using Plots, DataFrames, OnlineStats, OnlineAI\n",
    "gadfly(); default(size=(500,300))\n",
    "df = readtable(joinpath(Pkg.dir(\"Plots\"), \"examples\", \"meetup\", \"winequality-white.csv\"), separator=';');"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "y = float(df[:quality] .> 6)\n",
    "x = Array(df[:,1:11])\n",
    "n, p = size(x)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "# logistic regression\n",
    "reg = StochasticModel(x, y; model=LogisticRegression())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "yhat = predict(reg, x)\n",
    "scatter(yhat, y, xlab=\"Estimate\", ylab=\"Actual\", title=\"Logistic Regression\", smooth=.95, alpha=0.2, w=0, nbins=50)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "for i in 1:10000\n",
    "    row = sample(1:n)\n",
    "    update!(reg, vec(x[row,:]), y[row])\n",
    "end\n",
    "reg"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "y"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
 ],
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