Fahrsimulator_MSY2526_AI/EDA/histogramms.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "cc08936c",
   "metadata": {},
   "source": [
    "## Insights into the dataset with histogramms and scatter plots"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "1014c5e0",
   "metadata": {},
   "source": [
    "Imports"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "e42f3011",
   "metadata": {},
   "outputs": [],
   "source": [
    "import pandas as pd\n",
    "import numpy as np\n",
    "import matplotlib.pyplot as plt\n",
    "from pathlib import Path"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "0a834496",
   "metadata": {},
   "outputs": [],
   "source": [
    "path  = Path(r\".parquet\") # TODO: enter path to dataset\n",
    "df = pd.read_parquet(path=path)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "aa4759fa",
   "metadata": {},
   "outputs": [],
   "source": [
    "high_nback = df[\n",
    "    (df[\"STUDY\"]==\"n-back\") &\n",
    "    (df[\"LEVEL\"].isin([2, 3, 5, 6])) &\n",
    "    (df[\"PHASE\"].isin([\"train\", \"test\"]))\n",
    "]\n",
    "high_nback.shape"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "a2aa0596",
   "metadata": {},
   "outputs": [],
   "source": [
    "low_all = df[\n",
    "    ((df[\"PHASE\"] == \"baseline\") |\n",
    "     ((df[\"STUDY\"] == \"n-back\") & (df[\"PHASE\"] != \"baseline\") & (df[\"LEVEL\"].isin([1,4]))))\n",
    "]\n",
    "print(low_all.shape)\n",
    "high_kdrive = df[\n",
    "    (df[\"STUDY\"] == \"k-drive\") & (df[\"PHASE\"] != \"baseline\")\n",
    "]\n",
    "print(high_kdrive.shape)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "f7d446a1",
   "metadata": {},
   "outputs": [],
   "source": [
    "print((df.shape[0]==(high_kdrive.shape[0]+high_nback.shape[0]+low_all.shape[0])))\n",
    "print(df.shape[0])\n",
    "print((high_kdrive.shape[0]+high_nback.shape[0]+low_all.shape[0]))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "474e144a",
   "metadata": {},
   "outputs": [],
   "source": [
    "high_all = pd.concat([high_nback, high_kdrive])\n",
    "high_all.shape"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "5dd585c2",
   "metadata": {},
   "outputs": [],
   "source": [
    "df.dtypes"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "0bd39d9f",
   "metadata": {},
   "outputs": [],
   "source": [
    "face_au_cols = [c for c in low_all.columns if c.startswith(\"FACE_AU\")]\n",
    "eye_cols =  ['Fix_count_short_66_150', 'Fix_count_medium_300_500',\n",
    "       'Fix_count_long_gt_1000', 'Fix_count_100', 'Fix_mean_duration',\n",
    "       'Fix_median_duration', 'Sac_count', 'Sac_mean_amp', 'Sac_mean_dur',\n",
    "       'Sac_median_dur', 'Blink_count', 'Blink_mean_dur', 'Blink_median_dur',\n",
    "       'Pupil_mean', 'Pupil_IPA']\n",
    "\n",
    "cols = face_au_cols+eye_cols\n",
    "\n",
    "# Calculate number of rows and columns for subplots\n",
    "n_cols = len(cols)\n",
    "n_rows = 7\n",
    "n_cols_subplot = 5\n",
    "\n",
    "# Create figure with subplots\n",
    "fig, axes = plt.subplots(n_rows, n_cols_subplot, figsize=(20, 16))\n",
    "axes = axes.flatten()\n",
    "fig.suptitle('Feature Distributions: Low vs High', fontsize=20, fontweight='bold', y=0.995)\n",
    "\n",
    "# Create histogram for each AU column\n",
    "for idx, col in enumerate(cols):\n",
    "    ax = axes[idx]\n",
    "    \n",
    "    # Plot overlapping histograms\n",
    "    ax.hist(low_all[col].dropna(), bins=30, alpha=0.6, color='blue', label='low_all', edgecolor='black')\n",
    "    ax.hist(high_all[col].dropna(), bins=30, alpha=0.6, color='red', label='high_all', edgecolor='black')\n",
    "    \n",
    "    # Set title and labels\n",
    "    ax.set_title(col, fontsize=10, fontweight='bold')\n",
    "    ax.set_xlabel('Value', fontsize=8)\n",
    "    ax.set_ylabel('Frequency', fontsize=8)\n",
    "    ax.legend(fontsize=8)\n",
    "    ax.grid(True, alpha=0.3)\n",
    "\n",
    "# Hide any unused subplots\n",
    "for idx in range(len(cols), len(axes)):\n",
    "    axes[idx].set_visible(False)\n",
    "\n",
    "# Adjust layout\n",
    "plt.tight_layout()\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "6cd53cdb",
   "metadata": {},
   "outputs": [],
   "source": [
    "# Create figure with subplots\n",
    "fig, axes = plt.subplots(n_rows, n_cols_subplot, figsize=(20, 16))\n",
    "axes = axes.flatten()\n",
    "fig.suptitle('Feature Scatter: Low vs High', fontsize=20, fontweight='bold', y=0.995)\n",
    "\n",
    "for idx, col in enumerate(cols):\n",
    "    ax = axes[idx]\n",
    "\n",
    "    # Scatterplots\n",
    "    ax.scatter(range(len(low_all[col])), low_all[col], alpha=0.6, color='blue', label='low_all', s=10)\n",
    "    ax.scatter(range(len(high_all[col])), high_all[col], alpha=0.6, color='red', label='high_all', s=10)\n",
    "\n",
    "    ax.set_title(col, fontsize=10, fontweight='bold')\n",
    "    ax.set_xlabel('Sample index', fontsize=8)\n",
    "    ax.set_ylabel('Value', fontsize=8)\n",
    "    ax.legend(fontsize=8)\n",
    "    ax.grid(True, alpha=0.3)\n",
    "\n",
    "\n",
    "plt.tight_layout()\n",
    "plt.show()"
   ]
  }
 ],
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