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script/create_dataset.py
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##############################################################################################
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### Script de création de la base de données articles à partir du fichier parquet,
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### correspondant au jeu d'essai : https://www.kaggle.com/code/fabiochiusano/medium-articles-simple-data-analysis
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### Téléchargement du csv puis conversion en Parquet avec compression snappy :
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### df = pd.read_csv("medium_articles.csv")
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### df.to_parquet("medium_articles.parquet", engine="pyarrow", compression="snappy")
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###
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### Le fichier a été uploadé dans un dataset HF : Loren/articles_db
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###
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### Ce script
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### - crée une base SQLite articles.db constituée des 3 tables : tags, articles, et tag_article
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### - l'upload dans le dataset HF Loren/articles_db
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### - crée les fichiers Parquet compressés à partir des tables SQLite
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### - l'upload dans le dataset HF Loren/articles_database
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###
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### 👉 Ils peuvent alors être utilisés par un space Hugging Face
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##############################################################################################
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import sqlite3
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import pandas as pd
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import os
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from dotenv import load_dotenv
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import itertools
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import ast
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import uuid
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from huggingface_hub import hf_hub_download, upload_file
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from pathlib import Path
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from collections import Counter
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# Initialisations
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print("Initialisations ...")
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load_dotenv()
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HF_TOKEN = os.getenv('API_HF_TOKEN')
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# Constantes
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MIN_COUNT = 5 # nombre minimum d'occurrences pour qu'un tag soit conservé
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DATA_DIR = Path("../../Data") # dossier parent du script
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REPO_ID_DB = "Loren/articles_db" # dataset HF
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REPO_ID = "Loren/articles_database" # dataset HF
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DB_NAME = 'articles.db'
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SQLITE_FILE = DATA_DIR / DB_NAME
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LIST_TABLES = ["articles", "tags", "tag_article"]
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PARQUET_DIR = DATA_DIR / "parquet_tables"
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# Chargement des données
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parquet_path = hf_hub_download(repo_id=REPO_ID_DB,
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filename="medium_articles.parquet",
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repo_type="dataset")
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# Créer les dossiers s'ils n'existent pas
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DATA_DIR.mkdir(exist_ok=True)
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PARQUET_DIR.mkdir(exist_ok=True)
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# Chargement des données
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print("Chargement des données ...")
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df = pd.read_parquet(parquet_path)
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# Initialisations de la base SQLite
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print("Initialisations de la base SQLite ...")
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conn = sqlite3.connect(SQLITE_FILE)
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cur = conn.cursor()
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# Suppression des anciennes tables
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cur.execute("DROP TABLE IF EXISTS tag_article")
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cur.execute("DROP TABLE IF EXISTS tags")
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cur.execute("DROP TABLE IF EXISTS articles")
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# Création des tables Articles, Tags, et de la table d'association articles <-> tags
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cur.execute("""
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CREATE TABLE articles (
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article_id TEXT PRIMARY KEY, -- UUID
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article_title TEXT,
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article_text TEXT,
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article_url TEXT,
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article_authors TEXT,
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article_date TEXT -- YYYY-MM-DD
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)""")
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cur.execute("""
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CREATE TABLE tags (
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tag_id INTEGER PRIMARY KEY AUTOINCREMENT,
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tag_name TEXT UNIQUE
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)""")
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cur.execute("""
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CREATE TABLE tag_article (
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tag_article_id INTEGER PRIMARY KEY AUTOINCREMENT,
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article_id TEXT,
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tag_id INTEGER,
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FOREIGN KEY(article_id) REFERENCES articles(article_id),
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FOREIGN KEY(tag_id) REFERENCES tags(tag_id)
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)""")
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# Extraction des tags en une liste
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print("Extraction des tags en une liste ...")
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df['list_tags'] = df['tags'].apply(lambda x: ast.literal_eval(x) if isinstance(x, str) else [])
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# Extraire tous les tags uniques
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all_tags = list(itertools.chain.from_iterable(df['list_tags']))
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# Comptage du nombre d'occurrences de chaque tag
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tag_counts = Counter(all_tags)
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# On ne va conserver que les tags avec au moins 100 occurrences
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list_tags = [tag for tag, count in tag_counts.items() if count >= MIN_COUNT]
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# Insertion des tags dans la table
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print("Insertion des tags dans la table ...")
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cur.executemany("INSERT INTO tags (tag_name) VALUES (?)", [(tag,) for tag in list_tags])
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# Récupération des correspondances tag_name -> tag_id
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print("Récupération des correspondances tag_name -> tag_id ...")
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cur.execute("SELECT tag_id, tag_name FROM tags")
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dict_tag_map = {tag_name: tag_id for tag_id, tag_name in cur.fetchall()}
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# Insertion des articles et table d'association dans les tables
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print("Insertion des articles et table d'association dans les tables ...")
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for _, row in df.iterrows():
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# Détermination de l'id article
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article_id = str(uuid.uuid4())
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# Extraction de la date du timestamp
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date_value = None
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if pd.notna(row["timestamp"]):
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try:
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date_value = str(pd.to_datetime(row["timestamp"]).date())
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except Exception:
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date_value = None
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# Insertion dans la table Articles
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cur.execute("""
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INSERT INTO articles (article_id, article_title, article_text, article_url, article_authors, article_date)
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VALUES (?, ?, ?, ?, ?, ?)""",
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(article_id, row["title"], row["text"], row["url"], row["authors"], date_value))
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# Association aux tags
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for tag_name in row['list_tags']:
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try:
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tag_id = dict_tag_map[tag_name]
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cur.execute("INSERT INTO tag_article (article_id, tag_id) VALUES (?, ?)",
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(article_id, tag_id))
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except:
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pass
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print("-> ", len(list_tags), " tags")
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cur.execute("SELECT COUNT(*) FROM tag_article")
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nb_lignes = cur.fetchone()[0]
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print("-> ", nb_lignes, " associations articles <-> tags")
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print("-> ", len(df), " articles")
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# Commit
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print("Commit ...")
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conn.commit()
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# Upload dans le dataset hugging face
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print("Upload base Sqlite dans le dataset hugging face ...")
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upload_file(
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path_or_fileobj=SQLITE_FILE,
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path_in_repo=DB_NAME,
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repo_id=REPO_ID_DB,
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repo_type="dataset",
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token=HF_TOKEN
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)
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# Création des fichiers Parquet compressés
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print("Création des fichiers Parquet compressés ...")
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parquet_files = []
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for table in LIST_TABLES:
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df = pd.read_sql_query(f"SELECT * FROM {table}", conn)
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parquet_path = PARQUET_DIR / f"{table}.parquet"
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df.to_parquet(parquet_path, engine="pyarrow", index=False, compression="snappy")
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parquet_files.append(parquet_path)
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# Upload des fichiers Parquet vers HF
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print("Upload des fichiers Parquet dans le dataset hugging face ...")
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for parquet_file in parquet_files:
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print(f"Uploading {parquet_file.name} ...")
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upload_file(
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path_or_fileobj=parquet_file,
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path_in_repo=parquet_file.name,
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repo_id=REPO_ID,
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repo_type="dataset",
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token=HF_TOKEN
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)
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print("Upload terminé ✅")
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conn.close()
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print("Traitement terminé.")
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