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diff --git a/Metrics/Metrics-Calculation/metrics_plot/model_evolve_comparison/src/representative_selector .ipynb b/Metrics/Metrics-Calculation/metrics_plot/model_evolve_comparison/src/representative_selector .ipynb
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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Use K-medoid algorithm to find the suitable human model representitives"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Imports"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import os, sys\n",
+    "lib_path = os.path.abspath(os.path.join('..', '..', 'utils'))\n",
+    "sys.path.append(lib_path)\n",
+    "from GraphType import GraphStat\n",
+    "import readCSV as reader\n",
+    "from scipy import stats\n",
+    "from ipywidgets import interact, fixed, interactive\n",
+    "import ipywidgets as widgets\n",
+    "from pyclustering.cluster.kmedoids import kmedoids\n",
+    "from pyclustering.utils.metric import distance_metric, type_metric\n",
+    "import random"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Define a new distance metric"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def ks_value(dest1, dest2):\n",
+    "    value, p = stats.ks_2samp(dest1, dest2)\n",
+    "    return value\n",
+    "\n",
+    "\n",
+    "ks_metric = distance_metric(type_metric.USER_DEFINED, func=ks_value)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Read Human Models"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "1253"
+      ]
+     },
+     "execution_count": 4,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "# Progress Widge\n",
+    "w = widgets.FloatProgress(\n",
+    "    value=0,\n",
+    "    min=0,\n",
+    "    max=1.0,\n",
+    "    step=0.1,\n",
+    "    description='Loading Files...:',\n",
+    "    bar_style='info',\n",
+    "    orientation='horizontal'\n",
+    ")\n",
+    "\n",
+    "\n",
+    "humanFiles = reader.readmultiplefiles('../input/humanOutput/', 1300, False)\n",
+    "modelToFileName = {}\n",
+    "for name in humanFiles:\n",
+    "    modelToFileName[GraphStat(name)] = name\n",
+    "\n",
+    "models = list(modelToFileName.keys())\n",
+    "len(humanFiles)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Find Representative by K-medroid for different dists on GraphStat"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "* Returns the index of the representative"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def findRep(graphStats, func):\n",
+    "    out_ds = list(map(func, models))\n",
+    "\n",
+    "    #choose a random starting point\n",
+    "    start_index = random.randint(0, len(out_ds))\n",
+    "\n",
+    "    # start with one initial metrid [start_index]\n",
+    "    outdegree_kmedoid = kmedoids(out_ds, [start_index], metric=ks_metric)\n",
+    "\n",
+    "    outdegree_kmedoid.process()\n",
+    "    centoids = outdegree_kmedoid.get_medoids()\n",
+    "    return centoids[0]"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Find representative for out degree"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "* the rep found is ../input/humanOutput\\R_20158_run_1.csv\n",
+    "* the average distance between it and others is 0.05515988287586802"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "../input/humanOutput\\R_20158_run_1.csv\n",
+      "../input/humanOutput\\R_20158_run_1.csv\n"
+     ]
+    }
+   ],
+   "source": [
+    "od_rep_index = findRep(models, lambda m: m.out_d)\n",
+    "print(list(modelToFileName.values())[od_rep_index])\n",
+    "od_rep_model = models[od_rep_index]\n",
+    "print(modelToFileName[od_rep_model])\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 19,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "0.05515988287586802\n"
+     ]
+    }
+   ],
+   "source": [
+    "total_distance = 0\n",
+    "count = 0\n",
+    "for model in models:\n",
+    "    total_distance += ks_value(od_rep_model.out_d, model.out_d)\n",
+    "print(total_distance / len(models))"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Find Representative for node activities"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "* the rep found is ../input/humanOutput\\R_2016176_run_1.csv\n",
+    "* the average distance between it and others is 0.05275267434589047"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "../input/humanOutput\\R_2016176_run_1.csv\n",
+      "../input/humanOutput\\R_2016176_run_1.csv\n"
+     ]
+    }
+   ],
+   "source": [
+    "total_distance = 0\n",
+    "for model in models:\n",
+    "    total_distance += ks_value(od_rep_model.mpc, model.mpc)\n",
+    "print(total_distance / len(models))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 18,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "0.05275267434589047\n"
+     ]
+    }
+   ],
+   "source": [
+    "total_distance = 0\n",
+    "count = 0\n",
+    "for model in models:\n",
+    "    total_distance += ks_value(od_rep_model.na, model.na)\n",
+    "print(total_distance / len(models))"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Find Representative for MPC"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "* the rep found is ../input/humanOutput\\R_2015246_run_1.csv\n",
+    "* the average distance between it and others is 0.08556632702185384"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "../input/humanOutput\\R_2015246_run_1.csv\n",
+      "../input/humanOutput\\R_2015246_run_1.csv\n"
+     ]
+    }
+   ],
+   "source": [
+    "mpc_rep_index = findRep(models, lambda m: m.mpc)\n",
+    "print(list(modelToFileName.values())[mpc_rep_index])\n",
+    "mpc_rep_model = models[mpc_rep_index]\n",
+    "print(modelToFileName[mpc_rep_model])"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 20,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "0.08556632702185384\n"
+     ]
+    }
+   ],
+   "source": [
+    "total_distance = 0\n",
+    "count = 0\n",
+    "for model in models:\n",
+    "    total_distance += ks_value(od_rep_model.mpc, model.mpc)\n",
+    "print(total_distance / len(models))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.7.3"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}