draw_lda_graphical_model.ipynb

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   "source": [
    "from matplotlib import rc\n",
    "%matplotlib inline\n",
    "import daft\n",
    "\n",
    "rc(\"font\", family=\"Ricty\", size=15)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
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    "pgm = daft.PGM(shape=[7, 5])\n",
    "\n",
    "pgm.add_node(daft.Node(\"alpha\", r\"$\\alpha$\", 1, 2.5))\n",
    "pgm.add_node(daft.Node(\"theta\", r\"$\\theta$\", 2, 2.5))\n",
    "pgm.add_node(daft.Node(\"z\", r\"$z_i$\",       3, 2.5))\n",
    "pgm.add_node(daft.Node(\"w\", r\"$w_i$\",       4, 2.5, observed=True))\n",
    "\n",
    "pgm.add_node(daft.Node(\"phi\", r\"$\\beta$\",   5, 2.5))\n",
    "pgm.add_node(daft.Node(\"beta\", r\"$\\eta$\",   6, 2.5))\n",
    "\n",
    "# Edges.\n",
    "pgm.add_edge(\"alpha\", \"theta\")\n",
    "pgm.add_edge(\"theta\", \"z\")\n",
    "pgm.add_edge(\"z\", \"w\")\n",
    "pgm.add_edge(\"beta\", \"phi\")\n",
    "pgm.add_edge(\"phi\", \"w\")\n",
    "\n",
    "# And a plate.\n",
    "pgm.add_plate(daft.Plate([1.6, 2.0, 2.9, 1.0], label=r\"$D$\", shift=-0.1))\n",
    "pgm.add_plate(daft.Plate([2.5, 2.1, 1.8, 0.8], label=r\"$N$\", shift=-0.1))\n",
    "pgm.add_plate(daft.Plate([4.7, 2.0, 0.6, 1.0], label=r\"$K$\", shift=-0.1))\n",
    "\n",
    "pgm.render()\n",
    "pgm.figure.savefig(\"lda.pdf\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
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