初始化项目，由ModelHub XC社区提供模型

Model: AITeamVN/Vietnamese_Embedding
Source: Original Platform

evaluation_model.py

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+import numpy as np
+import torch
+import json
+import pandas as pd
+from tqdm import tqdm
+from typing import List, Dict, Tuple, Set, Union, Optional
+from langchain.docstore.document import Document
+from langchain_community.vectorstores import FAISS
+from langchain_community.vectorstores.faiss import DistanceStrategy
+from langchain_core.embeddings.embeddings import Embeddings
+from FlagEmbedding import BGEM3FlagModel
+
+def setup_gpu_info() -> None:
+    print(f"Số lượng GPU khả dụng: {torch.cuda.device_count()}")
+    print(f"GPU hiện tại: {torch.cuda.current_device()}")
+    print(f"Tên GPU: {torch.cuda.get_device_name(0)}")
+
+def load_model(model_name: str, use_fp16: bool = False) -> BGEM3FlagModel:
+    return BGEM3FlagModel(model_name, use_fp16=use_fp16)
+
+def load_json_file(file_path: str) -> dict:
+    with open(file_path, 'r', encoding='utf-8') as f:
+        return json.load(f)
+
+def load_jsonl_file(file_path: str) -> List[Dict]:
+    corpus = []
+    with open(file_path, "r", encoding="utf-8") as file:
+        for line in file:
+            data = json.loads(line.strip())
+            corpus.append(data)
+    return corpus
+
+def extract_corpus_from_legal_documents(legal_data: dict) -> List[Dict]:
+    corpus = []
+    for document in legal_data:
+        for article in document['articles']:
+            chunk = {
+                "law_id": document['law_id'],
+                "article_id": article['article_id'],
+                "title": article['title'],
+                "text": article['title'] + '\n' + article['text'] 
+            }
+            corpus.append(chunk)
+    return corpus
+
+def convert_corpus_to_documents(corpus: List[Dict[str, str]]) -> List[Document]:
+    documents = []
+    for i in tqdm(range(len(corpus)), desc="Converting corpus to documents"):
+        context = corpus[i]['text']
+        metadata = {
+            'law_id': corpus[i]['law_id'],
+            'article_id': corpus[i]['article_id'],
+            'title': corpus[i]['title']
+        }
+        documents.append(Document(page_content=context, metadata=metadata))
+    return documents
+
+class CustomEmbedding(Embeddings):
+    """Custom embedding class that uses the BGEM3FlagModel."""
+    
+    def __init__(self, model: BGEM3FlagModel, batch_size: int = 1): 
+        self.model = model
+        self.batch_size = batch_size
+        
+    def embed_documents(self, texts: List[str]) -> List[List[float]]:
+        embeddings = []
+        for i in tqdm(range(0, len(texts), self.batch_size), desc="Embedding documents"):
+            batch_texts = texts[i:i+self.batch_size]  
+            batch_embeddings = self._get_batch_embeddings(batch_texts)
+            embeddings.extend(batch_embeddings)
+            torch.cuda.empty_cache()
+        return np.vstack(embeddings) 
+
+    def embed_query(self, text: str) -> List[float]:
+        embedding = self.model.encode(text, max_length=256)['dense_vecs']
+        return embedding
+
+    def _get_batch_embeddings(self, texts: List[str]) -> List[List[float]]:
+        with torch.no_grad():
+            outputs = self.model.encode(texts, batch_size=self.batch_size, max_length=2048)['dense_vecs']
+        batch_embeddings = outputs
+        del outputs
+        return batch_embeddings
+
+
+class VectorDB:
+    """Vector database for document retrieval."""
+    
+    def __init__(
+        self,
+        documents: List[Document],
+        embedding: Embeddings,
+        vector_db=FAISS,
+        index_path: Optional[str] = None
+    ) -> None:
+        self.vector_db = vector_db
+        self.embedding = embedding
+        self.index_path = index_path
+        self.db = self._build_db(documents)
+
+    def _build_db(self, documents: List[Document]):
+        if self.index_path:
+            db = self.vector_db.load_local(
+                self.index_path, 
+                self.embedding, 
+                allow_dangerous_deserialization=True
+            )
+        else:
+            db = self.vector_db.from_documents(
+                documents=documents, 
+                embedding=self.embedding, 
+                distance_strategy=DistanceStrategy.DOT_PRODUCT
+            )
+        return db
+    
+    def get_retriever(self, search_type: str = "similarity", search_kwargs: dict = {"k": 10}):
+        retriever = self.db.as_retriever(search_type=search_type, search_kwargs=search_kwargs)
+        return retriever
+    
+    def save_local(self, folder_path: str) -> None:
+        self.db.save_local(folder_path)
+
+
+def process_sample(sample: dict, retriever) -> List[int]:
+    question = sample['question']
+    docs = retriever.invoke(question)
+    retrieved_article_full_ids = [
+        docs[i].metadata['law_id'] + "#" + docs[i].metadata['article_id'] 
+        for i in range(len(docs))
+    ]
+    indexes = []
+    for article in sample['relevant_articles']:
+        article_full_id = article['law_id'] + "#" + article['article_id']
+        if article_full_id in retrieved_article_full_ids:
+            idx = retrieved_article_full_ids.index(article_full_id) + 1
+            indexes.append(idx)
+        else:
+            indexes.append(0)       
+    return indexes
+
+def calculate_metrics(all_indexes: List[List[int]], num_samples: int, selected_keys: Set[str]) -> Dict[str, float]:
+    count = [len(indexes) for indexes in all_indexes]
+    result = {}
+    
+    for thres in [1, 3, 5, 10, 100]:
+        found = [[y for y in x if 0 < y <= thres] for x in all_indexes]
+        found_count = [len(x) for x in found]
+        acc = sum(1 for i in range(num_samples) if found_count[i] > 0) / num_samples
+        rec = sum(found_count[i] / count[i] for i in range(num_samples)) / num_samples
+        pre = sum(found_count[i] / thres for i in range(num_samples)) / num_samples
+        mrr = sum(1 / min(x) if x else 0 for x in found) / num_samples
+
+        if f"Accuracy@{thres}" in selected_keys:
+            result[f"Accuracy@{thres}"] = acc
+        if f"MRR@{thres}" in selected_keys:
+            result[f"MRR@{thres}"] = mrr
+            
+    return result
+
+
+def save_results(result: Dict[str, float], output_path: str) -> None:
+    with open(output_path, "w", encoding="utf-8") as f:
+        json.dump(result, f, indent=4, ensure_ascii=False)
+    print(f"Results saved to {output_path}")
+
+
+def main():
+    setup_gpu_info()
+    model = load_model('AITeamVN/Vietnamese_Embedding', use_fp16=False)
+    samples = load_json_file('zalo_kaggle/train_question_answer.json')['items']
+    legal_data = load_json_file('zalo_kaggle/legal_corpus.json')
+    
+    corpus = extract_corpus_from_legal_documents(legal_data)
+    documents = convert_corpus_to_documents(corpus)
+    embedding = CustomEmbedding(model, batch_size=1)  # Increased batch size for efficiency time
+    vectordb = VectorDB(
+        documents=documents,
+        embedding=embedding,
+        vector_db=FAISS,
+        index_path=None
+    )
+    retriever = vectordb.get_retriever(search_type="similarity", search_kwargs={"k": 100})
+    all_indexes = []
+    for sample in tqdm(samples, desc="Processing samples"):
+        all_indexes.append(process_sample(sample, retriever))
+    selected_keys = {"Accuracy@1", "Accuracy@3", "Accuracy@5", "Accuracy@10", "MRR@10", "Accuracy@100"}
+    result = calculate_metrics(all_indexes, len(samples), selected_keys)
+    print(result)
+    save_results(result, "zalo_kaggle/Vietnamese_Embedding.json")
+if __name__ == "__main__":
+    main()