Spaces:
Sleeping
Sleeping
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Browse filesImport des fichiers
- Dockerfile +34 -20
- README.md +41 -19
- app.py +262 -0
- requirements.txt +10 -3
Dockerfile
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RUN apt-get update && apt-get install -y \
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# syntax = docker/dockerfile:1.4
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FROM python:3.12-slim
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# Installe les dépendances système nécessaires
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RUN apt-get update && apt-get install -y --no-install-recommends \
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gcc \
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g++ \
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libjpeg62-turbo-dev \
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zlib1g-dev \
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libpng-dev \
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libfreetype6-dev \
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libopenjp2-7-dev \
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libtiff5-dev \
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curl \
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git \
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&& rm -rf /var/lib/apt/lists/*
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WORKDIR /app
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# Copie requirements en premier (meilleur cache)
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COPY requirements.txt .
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# Installe tout (sans cache pour réduire la taille finale)
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RUN pip install --no-cache-dir -r requirements.txt
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# Copie le code
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COPY app.py .
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# Port + commande obligatoire pour HF Spaces
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EXPOSE 8501
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HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health || exit 1
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CMD ["streamlit", "run", "app.py", "--server.port=8501", "--server.address=0.0.0.0", "--server.enableCORS=false", "--server.enableXsrfProtection=false"]
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README.md
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---
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title:
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emoji:
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colorFrom:
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colorTo:
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sdk: docker
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app_port: 8501
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---
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title: Cartographie des variables
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emoji: 🔗
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colorFrom: blue
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colorTo: blue
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sdk: docker
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app_port: 8501
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pinned: false
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---
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# 🔗 Cartographie des variables
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Application Streamlit pour analyser les relations entre variables via l'Information Mutuelle Normalisée (IMN).
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## Fonctionnalités
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- Import de jeux de données Seaborn
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- Import de fichiers CSV et Excel (détection automatique du séparateur)
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- Calcul de l'Information Mutuelle Normalisée entre toutes les variables
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- Visualisation interactive des relations sous forme de graphe réseau
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- Identification automatique des variables redondantes (doublons)
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- Matrice de proximité triangulaire avec heatmap
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- Seuils d'interprétation configurables
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## Interprétation de l'IMN
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- **0.90 – 1.00** : Quasi-doublons (variables redondantes)
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- **0.60 – 0.90** : Relation forte
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- **0.30 – 0.60** : Relation modérée
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- **0.10 – 0.30** : Relation faible
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- **< 0.10** : Indépendance
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## Utilisation
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1. Sélectionnez une source de données (dataset Seaborn ou fichier importé)
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2. Ajustez le seuil de visibilité des liens selon vos besoins
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3. Explorez les 4 onglets :
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- **Graphe interactif** : visualisation réseau des relations
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- **Doublons filtrés** : variables redondantes détectées
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- **Matrice triangulaire** : heatmap de toutes les relations
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- **Aperçu des données** : visualisation du dataset
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app.py
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import streamlit as st
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import seaborn as sns
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import pandas as pd
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import numpy as np
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import networkx as nx
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import plotly.graph_objects as go
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import matplotlib.pyplot as plt
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from sklearn.feature_selection import mutual_info_regression
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from scipy.stats import entropy
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from concurrent.futures import ThreadPoolExecutor
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# ==========================================
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# CONFIGURATION FACILE DU PROGRAMME
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# ==========================================
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GRAPH_HEIGHT = 480 # Modifiez cette valeur (en pixels) pour adapter la hauteur du graphe
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# ==========================================
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st.set_page_config(page_title="Analyse de proximité", page_icon="🔗", layout="wide")
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st.title("🔗 Cartographie des variables")
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st.subheader("Méthode : Information Mutuelle Normalisée (IMN)")
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# --- SIDEBAR ---
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with st.sidebar:
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st.header("⚙️ Configuration")
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data_source = st.radio("Source des données", ["Dataset Seaborn", "Importer un fichier"])
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df = None
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if data_source == "Importer un fichier":
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uploaded_file = st.file_uploader("Fichier CSV ou Excel", type=["csv", "xlsx", "xls"])
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if uploaded_file:
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file_extension = uploaded_file.name.split('.')[-1].lower()
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with st.spinner("Chargement du fichier..."):
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try:
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if file_extension == 'csv':
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# Tentative de lecture CSV avec détection automatique du séparateur
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df = pd.read_csv(uploaded_file, sep=None, engine='python', encoding_errors='ignore')
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df = df.dropna()
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elif file_extension in ['xlsx', 'xls']:
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df = pd.read_excel(uploaded_file)
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df = df.dropna()
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except Exception as e:
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st.error(f"Erreur lors du chargement : {str(e)}")
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df = None
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else:
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# Sélection du dataset Seaborn
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dataset_name = st.selectbox(
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"Choisir un dataset",
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["titanic", "tips", "iris", "penguins", "mpg", "planets", "flights", "diamonds"]
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)
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try:
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with st.spinner(f"Chargement du dataset {dataset_name}..."):
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df = sns.load_dataset(dataset_name).dropna()
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except:
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st.error(f"Impossible de charger le dataset '{dataset_name}'")
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df = None
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if df is not None:
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# Affichage de la taille du dataset
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st.metric("Lignes × Colonnes", f"{len(df)} × {len(df.columns)}")
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# Remplacement du slider classique par un select_slider avec vos paliers spécifiques
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threshold = st.select_slider(
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"Seuil de visibilité des liens (IMN)",
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options=[0, 0.1, 0.3, 0.6, 0.9],
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value=0.3,
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help="Filtre les liens selon les paliers d'interprétation définis ci-dessous."
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)
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st.info("💡 **Légende de l'IMN**")
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st.markdown("""
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* **0.90 – 1.00** : Quasi-doublons
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* **0.60 – 0.90** : Relation forte
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* **0.30 – 0.60** : Relation modérée
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* **0.10 – 0.30** : Relation faible
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* **< 0.10** : Indépendance
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""")
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# --- LOGIQUE DE CALCUL ---
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if df is not None:
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with st.spinner("Calcul de l'information mutuelle en cours..."):
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# Préparation des colonnes avec typage optimisé
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df_calc = df.copy()
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discrete_map = []
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for col in df.columns:
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if df[col].dtype == 'object' or df[col].dtype.name == 'category':
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df_calc[col] = df[col].astype('category').cat.codes.astype(np.int32)
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discrete_map.append(True)
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else:
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df_calc[col] = df_calc[col].astype(np.float32)
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discrete_map.append(False)
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n_vars = len(df.columns)
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mi_matrix = np.zeros((n_vars, n_vars), dtype=np.float32)
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# Calcul des entropies avec bins adaptés
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entropies = []
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for i in range(n_vars):
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bins = min(10, len(df_calc.iloc[:, i].unique()))
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hist = np.histogram(df_calc.iloc[:, i], bins=bins, density=True)[0]
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entropies.append(entropy(hist + 1e-9))
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# Fonction pour calculer une ligne de la matrice
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def compute_mi_row(i):
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scores = mutual_info_regression(
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df_calc,
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df_calc.iloc[:, i],
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discrete_features=discrete_map,
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random_state=42,
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n_neighbors=min(3, max(1, len(df_calc) // 100))
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)
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return i, scores
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# Calcul parallélisé de la matrice d'information mutuelle
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with ThreadPoolExecutor(max_workers=4) as executor:
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results = list(executor.map(compute_mi_row, range(n_vars)))
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# Remplissage de la matrice et symétrisation
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for i, scores in results:
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for j, s in enumerate(scores):
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if i == j:
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mi_matrix[i, j] = 1.0
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else:
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h_min = min(entropies[i], entropies[j])
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nmi = s / h_min if h_min > 0 else 0
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mi_matrix[i, j] = min(max(nmi, 0), 1.0)
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# Symétrisation de la matrice (moyenne des deux directions)
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mi_matrix = (mi_matrix + mi_matrix.T) / 2
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np.fill_diagonal(mi_matrix, 1.0)
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to_keep = []
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redundant_pairs = []
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seen = set()
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for i in range(n_vars):
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if i in seen: continue
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for j in range(i + 1, n_vars):
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| 140 |
+
val_im = mi_matrix[i, j]
|
| 141 |
+
if val_im >= 0.99:
|
| 142 |
+
seen.add(j)
|
| 143 |
+
redundant_pairs.append({
|
| 144 |
+
"Variable conservée": df.columns[i],
|
| 145 |
+
"Doublon supprimé": df.columns[j],
|
| 146 |
+
"Score IMN": f"{val_im:.4f}"
|
| 147 |
+
})
|
| 148 |
+
to_keep.append(i)
|
| 149 |
+
|
| 150 |
+
final_vars = [df.columns[i] for i in to_keep]
|
| 151 |
+
final_mi = mi_matrix[np.ix_(to_keep, to_keep)]
|
| 152 |
+
|
| 153 |
+
G = nx.Graph()
|
| 154 |
+
for i in range(len(final_vars)):
|
| 155 |
+
for j in range(i + 1, len(final_vars)):
|
| 156 |
+
im_val = final_mi[i, j]
|
| 157 |
+
if im_val > threshold:
|
| 158 |
+
G.add_edge(final_vars[i], final_vars[j], weight=float(im_val))
|
| 159 |
+
if final_vars[i] not in G:
|
| 160 |
+
G.add_node(final_vars[i])
|
| 161 |
+
|
| 162 |
+
pos = nx.spring_layout(G, k=1.2, seed=42)
|
| 163 |
+
|
| 164 |
+
node_hover_texts = []
|
| 165 |
+
for node in G.nodes():
|
| 166 |
+
hover_text = f"<b>Variable : {node}</b><br><br>Liens (IMN > {threshold}):<br>"
|
| 167 |
+
neighbors = G.edges(node, data=True)
|
| 168 |
+
sorted_neighbors = sorted(neighbors, key=lambda x: x[2]['weight'], reverse=True)
|
| 169 |
+
|
| 170 |
+
if not sorted_neighbors:
|
| 171 |
+
hover_text += "<i>Aucun lien significatif</i>"
|
| 172 |
+
else:
|
| 173 |
+
for _, neighbor, data in sorted_neighbors:
|
| 174 |
+
hover_text += f"• {neighbor} : <b>{data['weight']:.4f}</b><br>"
|
| 175 |
+
node_hover_texts.append(hover_text)
|
| 176 |
+
|
| 177 |
+
# --- AFFICHAGE ---
|
| 178 |
+
tab1, tab2, tab3, tab4 = st.tabs(["📊 Graphe interactif", "👯 Doublons filtrés", "📋 Matrice triangulaire", "📄 Aperçu des données"])
|
| 179 |
+
|
| 180 |
+
with tab1:
|
| 181 |
+
edge_traces = []
|
| 182 |
+
for edge in G.edges(data=True):
|
| 183 |
+
x0, y0 = pos[edge[0]]
|
| 184 |
+
x1, y1 = pos[edge[1]]
|
| 185 |
+
w = edge[2]['weight']
|
| 186 |
+
color = f'rgba({int(255*w)}, {int(150*(1-w))}, {int(200*(1-w))}, {0.3 + 0.4*w})'
|
| 187 |
+
|
| 188 |
+
edge_traces.append(go.Scatter(
|
| 189 |
+
x=[x0, x1, None], y=[y0, y1, None],
|
| 190 |
+
line=dict(width=w*12, color=color),
|
| 191 |
+
hoverinfo='none',
|
| 192 |
+
mode='lines'
|
| 193 |
+
))
|
| 194 |
+
|
| 195 |
+
node_trace = go.Scatter(
|
| 196 |
+
x=[pos[n][0] for n in G.nodes()],
|
| 197 |
+
y=[pos[n][1] for n in G.nodes()],
|
| 198 |
+
mode='markers+text',
|
| 199 |
+
text=list(G.nodes()),
|
| 200 |
+
textposition="bottom center",
|
| 201 |
+
textfont=dict(color='white', size=11),
|
| 202 |
+
marker=dict(
|
| 203 |
+
size=[10 + G.degree(n) * 5 for n in G.nodes()],
|
| 204 |
+
color='#1f77b4',
|
| 205 |
+
line=dict(width=2, color='white'),
|
| 206 |
+
opacity=1
|
| 207 |
+
),
|
| 208 |
+
hoverinfo='text',
|
| 209 |
+
hovertext=node_hover_texts
|
| 210 |
+
)
|
| 211 |
+
|
| 212 |
+
fig = go.Figure(data=edge_traces + [node_trace])
|
| 213 |
+
fig.update_layout(
|
| 214 |
+
paper_bgcolor='rgba(15,15,25,1)',
|
| 215 |
+
plot_bgcolor='rgba(0,0,0,0)',
|
| 216 |
+
height=GRAPH_HEIGHT,
|
| 217 |
+
showlegend=False,
|
| 218 |
+
xaxis=dict(showgrid=False, zeroline=False, showticklabels=False),
|
| 219 |
+
yaxis=dict(showgrid=False, zeroline=False, showticklabels=False),
|
| 220 |
+
margin=dict(b=20, l=5, r=5, t=40),
|
| 221 |
+
hoverlabel=dict(bgcolor="rgba(30, 30, 50, 0.9)", font_size=13)
|
| 222 |
+
)
|
| 223 |
+
st.plotly_chart(fig, use_container_width=True)
|
| 224 |
+
|
| 225 |
+
with tab2:
|
| 226 |
+
st.subheader("Variables supprimées (Redondance forte)")
|
| 227 |
+
if redundant_pairs:
|
| 228 |
+
st.dataframe(pd.DataFrame(redundant_pairs), use_container_width=True)
|
| 229 |
+
else:
|
| 230 |
+
st.info("Aucun doublon détecté.")
|
| 231 |
+
|
| 232 |
+
with tab3:
|
| 233 |
+
st.subheader("Matrice de proximité")
|
| 234 |
+
df_imn = pd.DataFrame(final_mi, index=final_vars, columns=final_vars)
|
| 235 |
+
mask = np.triu(np.ones_like(df_imn, dtype=bool))
|
| 236 |
+
|
| 237 |
+
fig_map, ax = plt.subplots(figsize=(10, 8), layout="constrained")
|
| 238 |
+
fig_map.patch.set_facecolor('white')
|
| 239 |
+
|
| 240 |
+
sns.heatmap(df_imn, mask=mask, cmap="coolwarm", vmax=1.0, vmin=0,
|
| 241 |
+
annot=True, fmt=".2f", square=True, linewidths=.5,
|
| 242 |
+
cbar_kws={"shrink": .8}, ax=ax, annot_kws={"size": 9})
|
| 243 |
+
|
| 244 |
+
plt.xticks(rotation=45, ha='right', color='black')
|
| 245 |
+
plt.yticks(rotation=0, color='black')
|
| 246 |
+
ax.set_facecolor('white')
|
| 247 |
+
|
| 248 |
+
st.pyplot(fig_map)
|
| 249 |
+
|
| 250 |
+
with tab4:
|
| 251 |
+
st.subheader("Aperçu des données (20 premières lignes)")
|
| 252 |
+
st.dataframe(df.head(20), use_container_width=True)
|
| 253 |
+
else:
|
| 254 |
+
st.info("👈 Veuillez sélectionner ou importer un jeu de données.")
|
| 255 |
+
|
| 256 |
+
# Footer
|
| 257 |
+
st.markdown("---")
|
| 258 |
+
st.markdown("""
|
| 259 |
+
<div style='text-align: center; color: gray;'>
|
| 260 |
+
<small>L'Information Mutuelle Normalisée (IMN) mesure la dépendance entre variables (0 = indépendance, 1 = dépendance totale)</small>
|
| 261 |
+
</div>
|
| 262 |
+
""", unsafe_allow_html=True)
|
requirements.txt
CHANGED
|
@@ -1,3 +1,10 @@
|
|
| 1 |
-
|
| 2 |
-
pandas
|
| 3 |
-
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
+
streamlit==1.40.2
|
| 2 |
+
pandas==2.2.3
|
| 3 |
+
numpy==2.2.1
|
| 4 |
+
seaborn==0.13.2
|
| 5 |
+
matplotlib==3.10.0
|
| 6 |
+
scipy==1.15.1
|
| 7 |
+
scikit-learn==1.6.1
|
| 8 |
+
networkx==3.4.2
|
| 9 |
+
plotly==5.24.1
|
| 10 |
+
openpyxl==3.1.5
|