542 lines
13 KiB
Plaintext
542 lines
13 KiB
Plaintext
{
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"cells": [
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{
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"cell_type": "markdown",
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"id": "40d49349-faaa-420c-9b65-0bdc9edfabce",
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"metadata": {},
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"source": [
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"# The Price is Right\n",
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"\n",
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"## Finishing off with Random Forests, XG Boost & Ensemble"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "6cd8b15e-f88a-470d-a9a6-b6370effaff9",
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"metadata": {},
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"outputs": [],
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"source": [
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"!pip install xgboost"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "fbcdfea8-7241-46d7-a771-c0381a3e7063",
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"metadata": {},
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"outputs": [],
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"source": [
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"# imports\n",
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"\n",
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"import os\n",
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"import re\n",
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"import math\n",
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"import json\n",
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"from tqdm import tqdm\n",
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"import random\n",
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"from dotenv import load_dotenv\n",
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"from huggingface_hub import login\n",
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"import numpy as np\n",
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"import pickle\n",
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"from openai import OpenAI\n",
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"from sentence_transformers import SentenceTransformer\n",
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"from datasets import load_dataset\n",
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"import chromadb\n",
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"from items import Item\n",
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"from testing import Tester\n",
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"import pandas as pd\n",
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"import numpy as np\n",
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"from sklearn.ensemble import RandomForestRegressor\n",
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"from sklearn.linear_model import LinearRegression\n",
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"from sklearn.metrics import mean_squared_error, r2_score\n",
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"import joblib\n",
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"import xgboost as xgb"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "e6e88bd1-f89c-4b98-92fa-aa4bc1575bca",
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"metadata": {},
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"outputs": [],
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"source": [
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"# CONSTANTS\n",
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"\n",
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"DB = \"products_vectorstore\""
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "98666e73-938e-469d-8987-e6e55ba5e034",
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"metadata": {},
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"outputs": [],
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"source": [
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"# environment\n",
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"\n",
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"load_dotenv(override=True)\n",
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"os.environ['OPENAI_API_KEY'] = os.getenv('OPENAI_API_KEY', 'your-key-if-not-using-env')\n",
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"os.environ['HF_TOKEN'] = os.getenv('HF_TOKEN', 'your-key-if-not-using-env')"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "dc696493-0b6f-48aa-9fa8-b1ae0ecaf3cd",
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"metadata": {},
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"outputs": [],
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"source": [
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"# Load in the test pickle file:\n",
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"\n",
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"with open('test.pkl', 'rb') as file:\n",
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" test = pickle.load(file)\n",
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" \n",
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"# training data is already in Chroma"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "d26a1104-cd11-4361-ab25-85fb576e0582",
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"metadata": {},
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"outputs": [],
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"source": [
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"client = chromadb.PersistentClient(path=DB)\n",
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"collection = client.get_or_create_collection('products')"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "e00b82a9-a8dc-46f1-8ea9-2f07cbc8e60d",
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"metadata": {},
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"outputs": [],
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"source": [
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"result = collection.get(include=['embeddings', 'documents', 'metadatas'])\n",
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"vectors = np.array(result['embeddings'])\n",
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"documents = result['documents']\n",
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"prices = [metadata['price'] for metadata in result['metadatas']]"
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]
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},
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{
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"cell_type": "markdown",
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"id": "bf6492cb-b11a-4ad5-859b-a71a78ffb949",
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"metadata": {},
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"source": [
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"# Random Forest\n",
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"\n",
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"We will now train a Random Forest model.\n",
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"\n",
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"Can you spot the difference from what we did in Week 6? In week 6 we used the word2vec model to form vectors; this time we'll use the vectors we already have in Chroma, from the SentenceTransformer model."
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "48894777-101f-4fe5-998c-47079407f340",
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"metadata": {},
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"outputs": [],
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"source": [
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"# This next line takes an hour on my M1 Mac!\n",
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"\n",
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"rf_model = RandomForestRegressor(n_estimators=100, random_state=42, n_jobs=-1)\n",
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"rf_model.fit(vectors, prices)"
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]
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},
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{
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"cell_type": "markdown",
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"id": "90a07dde-6f57-4488-8d08-e8e5646754e7",
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"metadata": {},
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"source": [
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"n_job = -1 means it is using every core"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "62eb7ddf-e1da-481e-84c6-1256547566bd",
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"metadata": {},
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"outputs": [],
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"source": [
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"# Save the model to a file\n",
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"\n",
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"joblib.dump(rf_model, 'random_forest_model.pkl')"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "d281dc5e-761e-4a5e-86b3-29d9c0a33d4a",
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"metadata": {},
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"outputs": [],
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"source": [
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"# Load it back in again\n",
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"\n",
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"rf_model = joblib.load('random_forest_model.pkl')"
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]
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},
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{
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"cell_type": "markdown",
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"id": "23760bf5-fe52-473d-bfbe-def6b7a67a77",
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"metadata": {},
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"source": [
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"# XG Boost Model"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "c65dcfb9-d2c1-431c-843d-c5908bc39e3f",
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"metadata": {},
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"outputs": [],
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"source": [
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"train_dmatrix = xgb.DMatrix(vectors, label=prices)\n",
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"\n",
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"params = {\n",
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" \"objective\": \"reg:squarederror\",\n",
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" \"max_depth\": 6,\n",
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" \"learning_rate\": 0.1,\n",
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" \"nthread\": -1,\n",
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" \"verbosity\": 1,\n",
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" \"subsample\": 0.8,\n",
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"}\n",
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"\n",
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"model = xgb.train(params, train_dmatrix, num_boost_round=100)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "a6980ca7-fc38-482c-8346-80c435058886",
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"metadata": {},
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"outputs": [],
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"source": [
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"joblib.dump(model,'xg_boost_model.pkl')"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "a0605f48-04f8-44a3-8d8c-c7be4cd840b2",
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"metadata": {},
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"outputs": [],
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"source": [
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"xgb_model = joblib.load('xg_boost_model.pkl')"
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]
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},
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{
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"cell_type": "markdown",
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"id": "22d10315-2b11-43b0-b042-679a2814dea1",
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"metadata": {},
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"source": [
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"# Agents"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "5d438dec-8e5b-4e60-bb6f-c3f82e522dd9",
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"metadata": {},
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"outputs": [],
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"source": [
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"from agents.specialist_agent import SpecialistAgent\n",
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"from agents.frontier_agent import FrontierAgent\n",
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"from agents.random_forest_agent import RandomForestAgent\n",
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"from agents.xg_boost_agent import XGBoostAgent"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "afc39369-b97b-4a90-b17e-b20ef501d3c9",
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"metadata": {},
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"outputs": [],
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"source": [
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"specialist = SpecialistAgent()\n",
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"frontier = FrontierAgent(collection)\n",
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"random_forest = RandomForestAgent()\n",
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"xg_boost = XGBoostAgent()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "8e2d0d0a-8bb8-4b39-b046-322828c39244",
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"metadata": {},
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"outputs": [],
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"source": [
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"def description(item):\n",
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" return item.prompt.split(\"to the nearest dollar?\\n\\n\")[1].split(\"\\n\\nPrice is $\")[0]"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "bfe0434f-b29e-4cc0-bad9-b07624665727",
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"metadata": {},
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"outputs": [],
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"source": [
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"def rf(item):\n",
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" return random_forest.price(description(item))"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "cdf233ec-264f-4b34-9f2b-27c39692137b",
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"metadata": {
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"scrolled": true
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},
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"outputs": [],
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"source": [
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"Tester.test(rf, test)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "192b94ac-37d0-4569-bc7c-8fc4f92d129b",
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"metadata": {},
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"outputs": [],
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"source": [
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"def xg_b(item):\n",
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" return xg_boost.price(description(item))"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "a3fa01c2-42d9-4ce7-ae36-1d874a0003c1",
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"metadata": {},
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"outputs": [],
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"source": [
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"xg_b(test[0])"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "9183aab7-0586-4d43-b212-c40442c7ab34",
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"metadata": {
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"scrolled": true
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},
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"outputs": [],
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"source": [
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"Tester.test(xg_b, test)"
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]
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},
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{
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"cell_type": "markdown",
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"id": "0045825e-2df0-429a-8ebb-2617517a2e75",
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"metadata": {},
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"source": [
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"# Moving towards the ensemble model"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "9f759bd2-7a7e-4c1a-80a0-e12470feca89",
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"metadata": {},
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"outputs": [],
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"source": [
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"product = \"Quadcast HyperX condenser mic for high quality audio for podcasting\""
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "e44dbd25-fb95-4b6b-bbbb-8da5fc817105",
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"metadata": {},
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"outputs": [],
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"source": [
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"print(specialist.price(product))\n",
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"print(frontier.price(product))\n",
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"print(random_forest.price(product))\n",
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"print(xg_boost.price(product))"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "1779b353-e2bb-4fc7-be7c-93057e4d688a",
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"metadata": {},
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"outputs": [],
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"source": [
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"specialists = []\n",
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"frontiers = []\n",
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"random_forests = []\n",
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"xg_boosts = []\n",
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"prices = []\n",
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"\n",
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"for item in tqdm(test[1000:1250]):\n",
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" text = description(item)\n",
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" specialists.append(specialist.price(text))\n",
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" frontiers.append(frontier.price(text))\n",
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" random_forests.append(random_forest.price(text))\n",
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" xg_boosts.append(xg_boost.price(text))\n",
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" prices.append(item.price)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "f0bca725-4e34-405b-8d90-41d67086a25d",
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"metadata": {},
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"outputs": [],
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"source": [
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"mins = [min(s,f,r,x) for s,f,r,x in zip(specialists, frontiers, random_forests, xg_boosts)]\n",
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"maxes = [max(s,f,r,x) for s,f,r,x in zip(specialists, frontiers, random_forests, xg_boosts)]\n",
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"\n",
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"X = pd.DataFrame({\n",
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" 'Specialist': specialists,\n",
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" 'Frontier': frontiers,\n",
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" 'RandomForest': random_forests,\n",
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" 'XGBoost' : xg_boosts,\n",
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" 'Min': mins,\n",
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" 'Max': maxes,\n",
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"})\n",
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"\n",
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"# Convert y to a Series\n",
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"y = pd.Series(prices)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "baac4947-02d8-4d12-82ed-9ace3c0bee39",
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"metadata": {},
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"outputs": [],
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"source": [
|
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"# Train a Linear Regression - current\n",
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"np.random.seed(42)\n",
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"\n",
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"lr = LinearRegression()\n",
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"lr.fit(X, y)\n",
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"\n",
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"feature_columns = X.columns.tolist()\n",
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"\n",
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"for feature, coef in zip(feature_columns, lr.coef_):\n",
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" print(f\"{feature}: {coef:.2f}\")\n",
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"print(f\"Intercept={lr.intercept_:.2f}\")"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "702de4cb-2311-4753-9c05-f3a0fa7e9990",
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"metadata": {},
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"outputs": [],
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"source": [
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"# Train a Linear Regression - old vals w/o xg\n",
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"np.random.seed(42)\n",
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"\n",
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"lr = LinearRegression()\n",
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"lr.fit(X, y)\n",
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"\n",
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"feature_columns = X.columns.tolist()\n",
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"\n",
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"for feature, coef in zip(feature_columns, lr.coef_):\n",
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" print(f\"{feature}: {coef:.2f}\")\n",
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"print(f\"Intercept={lr.intercept_:.2f}\")"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "0bdf6e68-28a3-4ed2-b17e-de0ede923d34",
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"metadata": {},
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"outputs": [],
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"source": [
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"joblib.dump(lr, 'ensemble_model.pkl')"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "e762441a-9470-4dd7-8a8f-ec0430e908c7",
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"metadata": {},
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"outputs": [],
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"source": [
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"from agents.ensemble_agent import EnsembleAgent\n",
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"ensemble = EnsembleAgent(collection)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "1a29f03c-8010-43b7-ae7d-1bc85ca6e8e2",
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"metadata": {},
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"outputs": [],
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"source": [
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"ensemble.price(product) #old val"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "13dbf002-eba6-4c7a-898f-d697f68ca28e",
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"metadata": {},
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"outputs": [],
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"source": [
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"ensemble.price(product)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "e6a5e226-a508-43d5-aa42-cefbde72ffdf",
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"metadata": {},
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"outputs": [],
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"source": [
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"def ensemble_pricer(item):\n",
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" return max(0,ensemble.price(description(item)))"
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]
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},
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{
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"cell_type": "code",
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"id": "8397b1ef-2ea3-4af8-bb34-36594e0600cc",
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"metadata": {
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|
"scrolled": true
|
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},
|
|
"outputs": [],
|
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"source": [
|
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"Tester.test(ensemble_pricer, test) #old "
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|
]
|
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},
|
|
{
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|
"cell_type": "code",
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"execution_count": null,
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"id": "0d26c9ff-994b-4799-af51-09d00ddc0c06",
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|
"metadata": {},
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|
"outputs": [],
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|
"source": [
|
|
"Tester.test(ensemble_pricer, test)"
|
|
]
|
|
}
|
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3 (ipykernel)",
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"name": "python3"
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},
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"name": "ipython",
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},
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"name": "python",
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}
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