{
 "cells": [
  {
   "cell_type": "code",
   "id": "initial_id",
   "metadata": {
    "ExecuteTime": {
     "end_time": "2025-11-04T14:28:00.043927Z",
     "start_time": "2025-11-04T14:27:59.939813Z"
    }
   },
   "source": "import numpy as np",
   "outputs": [],
   "execution_count": 3
  },
  {
   "metadata": {
    "ExecuteTime": {
     "end_time": "2025-11-04T14:28:09.512985Z",
     "start_time": "2025-11-04T14:28:09.508856Z"
    }
   },
   "cell_type": "code",
   "source": [
    "nn_architecture = [\n",
    "    {\"input_dim\": 2, \"output_dim\": 4, \"activation\": \"relu\"},\n",
    "    {\"input_dim\": 4, \"output_dim\": 6, \"activation\": \"relu\"},\n",
    "    {\"input_dim\": 6, \"output_dim\": 6, \"activation\": \"relu\"},\n",
    "    {\"input_dim\": 6, \"output_dim\": 4, \"activation\": \"relu\"},\n",
    "    {\"input_dim\": 4, \"output_dim\": 1, \"activation\": \"sigmoid\"},\n",
    "]"
   ],
   "id": "48cafaf4b64967bb",
   "outputs": [],
   "execution_count": 4
  },
  {
   "metadata": {
    "ExecuteTime": {
     "end_time": "2025-11-04T14:28:39.907457Z",
     "start_time": "2025-11-04T14:28:39.903244Z"
    }
   },
   "cell_type": "code",
   "source": [
    "def init_layers(nn_architecture, seed = 99):\n",
    "    np.random.seed(seed)\n",
    "    number_of_layers = len(nn_architecture)\n",
    "    params_values = {}\n",
    "\n",
    "    for idx, layer in enumerate(nn_architecture):\n",
    "        layer_idx = idx + 1\n",
    "        layer_input_size = layer[\"input_dim\"]\n",
    "        layer_output_size = layer[\"output_dim\"]\n",
    "\n",
    "        params_values['W' + str(layer_idx)] = np.random.randn(\n",
    "            layer_output_size, layer_input_size) * 0.1\n",
    "        params_values['b' + str(layer_idx)] = np.random.randn(\n",
    "            layer_output_size, 1) * 0.1\n",
    "\n",
    "    return params_values\n"
   ],
   "id": "d13137630b41b756",
   "outputs": [],
   "execution_count": 6
  },
  {
   "metadata": {
    "ExecuteTime": {
     "end_time": "2025-11-04T14:29:00.821197Z",
     "start_time": "2025-11-04T14:29:00.795742Z"
    }
   },
   "cell_type": "code",
   "source": "init_layers(nn_architecture)",
   "id": "31f205147667dea6",
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'W1': array([[-0.01423588,  0.20572217],\n",
       "        [ 0.02832619,  0.1329812 ],\n",
       "        [-0.01546219, -0.00690309],\n",
       "        [ 0.07551805,  0.08256466]]),\n",
       " 'b1': array([[-0.01130692],\n",
       "        [-0.23678376],\n",
       "        [-0.01670494],\n",
       "        [ 0.0685398 ]]),\n",
       " 'W2': array([[ 0.00235001,  0.04562013,  0.02704928, -0.14350081],\n",
       "        [ 0.08828171, -0.05800817, -0.05015653,  0.05909533],\n",
       "        [-0.07316163,  0.02617555, -0.08557956, -0.01875259],\n",
       "        [-0.03734863, -0.0461971 , -0.08164661, -0.00451233],\n",
       "        [ 0.01213278,  0.09259528, -0.05738197,  0.00527031],\n",
       "        [ 0.22073106,  0.03918219,  0.04827134,  0.0433334 ]]),\n",
       " 'b2': array([[-0.17042917],\n",
       "        [-0.02439081],\n",
       "        [-0.21397038],\n",
       "        [ 0.08613227],\n",
       "        [ 0.17002844],\n",
       "        [-0.05287848]]),\n",
       " 'W3': array([[ 0.17634779, -0.11216078, -0.11919342,  0.05527319, -0.08159809,\n",
       "         -0.04966468],\n",
       "        [ 0.10862256, -0.09746753, -0.02821358, -0.01172141,  0.03785473,\n",
       "          0.07321946],\n",
       "        [-0.0103571 , -0.11987063,  0.10100356,  0.28753603,  0.08203126,\n",
       "          0.05606115],\n",
       "        [-0.03756422, -0.02521043, -0.13896134,  0.06173323, -0.0135787 ,\n",
       "          0.1287905 ],\n",
       "        [-0.10369944,  0.13643321, -0.03099566, -0.06111171, -0.04831058,\n",
       "         -0.06089837],\n",
       "        [-0.20883353,  0.0639322 ,  0.0774304 ,  0.12785694,  0.0705276 ,\n",
       "          0.06559774]]),\n",
       " 'b3': array([[-0.1678502 ],\n",
       "        [ 0.01831099],\n",
       "        [-0.11332241],\n",
       "        [-0.02790857],\n",
       "        [ 0.13966199],\n",
       "        [ 0.00322194]]),\n",
       " 'W4': array([[-0.26136608, -0.10015776, -0.0567511 , -0.0225658 ,  0.09380238,\n",
       "          0.08367841],\n",
       "        [ 0.08121485,  0.0232307 , -0.02951077, -0.0361676 ,  0.04321151,\n",
       "          0.09339585],\n",
       "        [ 0.15526339,  0.00936234,  0.02948258,  0.14854308, -0.10868852,\n",
       "          0.08211628],\n",
       "        [-0.07879492,  0.15938117,  0.14059044,  0.16447566,  0.15415987,\n",
       "          0.08406076]]),\n",
       " 'b4': array([[-0.10230944],\n",
       "        [ 0.04947723],\n",
       "        [ 0.08957326],\n",
       "        [ 0.0477352 ]]),\n",
       " 'W5': array([[-0.01145305,  0.01568974,  0.03875967, -0.10262266]]),\n",
       " 'b5': array([[0.06791429]])}"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "execution_count": 7
  }
 ],
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