Clemylia / Pikachu-Aricate

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Model's Last Updated: November 26 2025
text-generation

Introduction of Pikachu-Aricate

Model Details of Pikachu-Aricate

⚡ Documentation Technique : Modèle Pikachu-Aricate

pikachu

🌟 1. Présentation du Projet

Le modèle Pikachu-Aricate est un modèle de langage génératif spécialisé, construit sur l'architecture propriétaire Aricate v4 de Clemylia. Son objectif unique est de simuler la communication du personnage Pikachu en générant des séquences de texte basées exclusivement sur un vocabulaire restreint d'onomatopées (principalement 'Pika', 'Chu', 'Cha').

Ce modèle est une démonstration de la capacité de l'architecture Aricate v4 à maîtriser un espace linguistique extrêmement limité, tout en maintenant une cohérence contextuelle et une variabilité des réponses.

  • Architecture de Base : Aricate v4
  • Domaine : Génération de texte spécialisé (Réponses monotones et émotionnelles)
  • Langage Cible : "Pikachu"
  • Auteur : Clemylia
🛠️ 2. Configuration Technique et Dépendances

Le déploiement et l'utilisation du modèle nécessitent l'environnement de l'architecture Aricate v4.

2.1. Dépendances Clés

Pour l'implémentation standard en Python, les librairies suivantes sont généralement utilisées :

  • torch ou tensorflow : Pour la gestion des tenseurs et l'accélération GPU/CPU. * hugging face : pour le chargement des datasets et la publication
  • json : Pour le chargement et le traitement du jeu de données d'entraînement.
2.2. Structure du Modèle (Aricate v4)
Composant Rôle Description
Tokenizer 🔡 Vocabulaire Limité aux mots : ['pika', 'chu', 'cha', '!', '?', '.', etc...]
Embedding Layer 🗺️ Représentation Convertit les tokens en vecteurs numériques.
Aricate Block (v4) 🧠 Apprentissage Cœur du modèle (Attention, Feed Forward).
Linear Head 🎯 Prédiction Couche finale qui prédit la probabilité du prochain mot.
💾 3. Jeu de Données d'Entraînement

Le modèle est entraîné sur un jeu de données de conversations Question/Réponse (Q/A) formaté en JSON.

  • Format : Tableau d'objets {"question": "...", "reponse": "..."} .
  • Taille du Dataset : Environ 60 exemples.
  • Objectif de la Réponse : Lier l'émotion ou le contexte d'une question humaine à une variation de l'onomatopée 'Pika'.
⚙️ 4. Utilisation et Infèrence (Code Exemple)

Voici un aperçu de la manière d'initialiser et d'utiliser le modèle pour la génération de texte.

4.1. Exemple de code d'inférence
import torch
import torch.nn as nn
import torch.nn.functional as F
import json
import os
import collections
import heapq
# Importations des librairies nécessaires pour le chargement
from huggingface_hub import hf_hub_download
from safetensors.torch import load_file as load_safetensors_file

# --- A. AricateAttentionLayer (Inchangé) ---
class AricateAttentionLayer(nn.Module):
    # ... (code inchangé) ...
    """Couche d'Attention Additive (Bahdanau)."""
    def __init__(self, hidden_dim):
        super(AricateAttentionLayer, self).__init__()
        self.W = nn.Linear(hidden_dim, hidden_dim)
        self.U = nn.Linear(hidden_dim, hidden_dim)
        self.V = nn.Linear(hidden_dim, 1, bias=False)
    def forward(self, rnn_outputs, last_hidden):
        last_hidden_expanded = last_hidden.unsqueeze(1)
        energy = torch.tanh(self.W(rnn_outputs) + self.U(last_hidden_expanded))
        attention_weights_raw = self.V(energy).squeeze(2)
        attention_weights = F.softmax(attention_weights_raw, dim=1)
        context_vector = torch.sum(rnn_outputs * attention_weights.unsqueeze(2), dim=1)
        return context_vector

# --- B. AricateModel (Inchangé) ---
class AricateModel(nn.Module):
    # ... (code inchangé) ...
    """Architecture Aricate V4, adaptée pour le rechargement."""
    def __init__(self, vocab_size: int, embedding_dim: int, hidden_dim: int, num_layers: int = 1, config: dict = None):
        super(AricateModel, self).__init__()

        if config is not None:
             vocab_size = config.get("vocab_size", vocab_size)
             embedding_dim = config.get("embedding_dim", embedding_dim)
             hidden_dim = config.get("hidden_dim", hidden_dim)
             num_layers = config.get("num_layers", num_layers)

        self.vocab_size = vocab_size
        self.embedding_dim = embedding_dim
        self.hidden_dim = hidden_dim
        self.num_layers = num_layers

        self.word_embeddings = nn.Embedding(num_embeddings=vocab_size, embedding_dim=embedding_dim, padding_idx=0)
        self.rnn = nn.GRU(input_size=embedding_dim, hidden_size=hidden_dim, num_layers=num_layers, batch_first=True)
        self.attention = AricateAttentionLayer(hidden_dim)
        self.hidden_to_vocab = nn.Linear(hidden_dim * 2, vocab_size)

    def forward(self, input_words):
        embeds = self.word_embeddings(input_words)
        rnn_out, hn = self.rnn(embeds)
        last_hidden = hn[-1]
        context_vector = self.attention(rnn_out, last_hidden)
        combined_features = torch.cat((context_vector, last_hidden), dim=1)
        logits = self.hidden_to_vocab(combined_features)
        return logits

# --- C. WordTokenizer (Inchangé) ---
class WordTokenizer:
    # ... (code inchangé) ...
    """Tokenizer Aricate adapté pour recharger à partir du vocabulaire publié."""
    def __init__(self, word_to_id: dict):
        self.word_to_id = word_to_id
        self.id_to_word = {id: word for word, id in word_to_id.items()}
        self.vocab_size = len(word_to_id)
        self.special_tokens = {
            '<pad>': word_to_id['<pad>'],
            '<unk>': word_to_id['<unk>'],
            '<eos>': word_to_id['<eos>'],
            '<sep>': word_to_id['<sep>'],
        }

    def encode(self, text, add_eos=False):
        words = text.lower().split()
        if add_eos:
            words.append('<eos>')
        ids = [self.word_to_id.get(word, self.word_to_id['<unk>']) for word in words]
        return ids

    def decode(self, ids):
        words = [self.id_to_word.get(id, '<unk>') for id in ids]
        return " ".join(word for word in words if word not in ['<pad>', '<unk>', '<eos>', '<sep>'])

# --- D. Fonction de Génération (MODIFIÉE pour Top-K Sampling et Temperature) ---
def generate_sequence(model, tokenizer, question, max_length, max_len_input, temperature=1.0, top_k=None):
    """
    Génère la réponse en utilisant Top-K Sampling et Temperature.
    
    Args:
        temperature (float): Ajuste la créativité (T > 1.0) ou la prudence (T < 1.0).
        top_k (int/None): Limite le choix aux K mots les plus probables pour l'échantillonnage.
    """
    model.eval()
    
    sep_id = tokenizer.special_tokens['<sep>']
    eos_id = tokenizer.special_tokens['<eos>']

    question_ids = tokenizer.encode(question)
    current_sequence = question_ids + [sep_id]
    
    print(f"\n--- Q/A Génération (Sampling | T={temperature:.2f} | K={top_k if top_k else 'désactivé'}) ---")
    print(f"Question: '{question}'")

    with torch.no_grad():
        for _ in range(max_length):
            
            # Préparer l'entrée
            input_ids_to_pad = current_sequence[-max_len_input:] if len(current_sequence) > max_len_input else current_sequence
            padding_needed = max_len_input - len(input_ids_to_pad)
            input_ids_padded = [tokenizer.special_tokens['<pad>']] * padding_needed + input_ids_to_pad
            input_tensor = torch.tensor(input_ids_padded).unsqueeze(0)

            # 1. Obtention des logits
            logits = model(input_tensor).squeeze(0)

            # 2. Application de la Temperature
            if temperature != 1.0 and temperature > 0:
                logits = logits / temperature

            # 3. Application du Top-K
            if top_k is not None:
                # Filtrer les logits pour ne garder que le top_k
                values, indices = torch.topk(logits, k=top_k)
                
                # Créer un masque (tensor rempli de -inf)
                mask = torch.ones_like(logits) * float('-inf')
                
                # Mettre à jour le masque avec les valeurs filtrées
                logits = torch.scatter(mask, dim=0, index=indices, src=values)

            # 4. Convertir en probabilités et échantillonner
            probabilities = F.softmax(logits, dim=-1)
            
            # S'assurer que les probabilités somment à 1
            if top_k is not None:
                probabilities = probabilities.div(probabilities.sum())
            
            predicted_id = torch.multinomial(probabilities, num_samples=1).item()

            # 5. Mettre à jour la séquence
            current_sequence.append(predicted_id)

            if predicted_id == eos_id:
                break

    # 6. Décodage
    try:
        sep_index = current_sequence.index(sep_id)
        response_ids = [id for id in current_sequence[sep_index+1:] if id != eos_id]
    except ValueError:
        response_ids = current_sequence

    final_response = tokenizer.decode(response_ids)
    
    # Dans le sampling, on n'a pas de score de log-probabilité unique comme dans Beam Search.
    print(f"Réponse générée: '{final_response}'")
    print("-" * 40)
    
    return final_response

# --- E. Fonction de Chargement du Modèle Lam-2 (Inchangée) ---
def load_lam2_model(repo_id: str):
    # ... (code inchangé) ...
    """
    Télécharge et charge le modèle Lam-2 et son tokenizer depuis Hugging Face.
    """
    print(f"--- Chargement de Lam-2 depuis {repo_id} ---")

    # 1. Télécharger le tokenizer
    tokenizer_path = hf_hub_download(repo_id=repo_id, filename="aricate_tokenizer.txt")
    with open(tokenizer_path, 'r', encoding='utf-8') as f:
        word_to_id = json.load(f)
    tokenizer = WordTokenizer(word_to_id)
    print(f"Tokenizer chargé. Taille du vocabulaire: {tokenizer.vocab_size}")

    # 2. Télécharger la configuration
    config_path = hf_hub_download(repo_id=repo_id, filename="config.json")
    with open(config_path, 'r') as f:
        model_config = json.load(f)
    print("Configuration du modèle chargée.")

    # 3. Initialiser le modèle
    model = AricateModel(
        vocab_size=model_config['vocab_size'],
        embedding_dim=model_config['embedding_dim'],
        hidden_dim=model_config['hidden_dim'],
        config=model_config
    )

    # 4. Télécharger et charger les poids Safetensors
    weights_path = hf_hub_download(repo_id=repo_id, filename="model.safetensors")
    state_dict = load_safetensors_file(weights_path)

    model.load_state_dict(state_dict)
    print("Poids du modèle Safetensors chargés avec succès.")

    MAX_LEN_INPUT_DEFAULT = 30

    print("-" * 40)
    return model, tokenizer, MAX_LEN_INPUT_DEFAULT

# --- F. Bloc principal d'exécution (MISE À JOUR) ---
if __name__ == '__main__':

    LAM2_REPO_ID = "Clemylia/Pikachu-Aricate"
    MAX_GENERATION_LENGTH = 15
    
    # 🚨 NOUVEAUX PARAMÈTRES POUR LE TEST 🚨
    TEST_TEMPERATURE = 0.8 # > 1.0 pour plus de créativité/aléatoire
    TEST_TOP_K = 10         # Limite le choix aux 10 mots les plus probables

    test_questions = [
        "Qui es-tu ?",
        "Comment l'amitié peut-elle être une source d'**inspiration scientifique** ou de découverte ?",
        "Quel est ton nom ?",
        "Comment l'identité de Charlotte pourrait-elle être utilisée dans la **gestion de crise** ou le soutien post-traumatique ?",
        "Qui t'a créé ?",
    ]

    try:
        # 1. Chargement du modèle
        lam2_model, lam2_tokenizer, max_len_input = load_lam2_model(LAM2_REPO_ID)

        print(f"\n>>> TEST D'INFÉRENCE LAM-2 EN MODE CRÉATIF (T={TEST_TEMPERATURE}, K={TEST_TOP_K}) <<<")

        # 2. Infèrence (Appel à la nouvelle fonction)
        for question in test_questions:
            generate_sequence( # Remplacement de generate_sequence_beam
                model=lam2_model,
                tokenizer=lam2_tokenizer,
                question=question,
                max_length=MAX_GENERATION_LENGTH,
                max_len_input=max_len_input,
                temperature=TEST_TEMPERATURE,
                top_k=TEST_TOP_K
            )

    except Exception as e:
        print(f"\n❌ Une erreur est survenue lors du chargement ou de l'inférence.")
        print(f"Détail de l'erreur: {e}")
        print("Vérifiez l'installation des dépendances et le REPO_ID.")
📈 5. Paramètres de Génération

Le comportement de ce modèle est fortement influencé par les paramètres de Sampling .

Paramètre Description Impact Recommandation
Temperature ($T$) Contrôle l'aléa des probabilités. Élevée $\rightarrow$ créativité / Basse $\rightarrow$ conservatisme. $0.7$ à $1.0$
Top-K ($K$) Limite le choix du mots aux $K$ plus probables. Élevé $\rightarrow$ vocabulaire élargi / Bas $\rightarrow$ vocabulaire ciblé. $5$ à $15$
Top-P ($P$) Optionnel : Contrôle l'échantillonnage par probabilité cumulée (Nucléus Sampling). Alternatif à Top-K, souvent plus dynamique. $0.9$ (si K est désactivé)

Fichier du modèle quantifier : pikachu_quantized.arica (présent a côté des fichiers de poids dans ce depot)

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Pikachu-Aricate huggingface.co is an AI model on huggingface.co that provides Pikachu-Aricate's model effect (), which can be used instantly with this Clemylia Pikachu-Aricate model. huggingface.co supports a free trial of the Pikachu-Aricate model, and also provides paid use of the Pikachu-Aricate. Support call Pikachu-Aricate model through api, including Node.js, Python, http.

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