82 lines
2.8 KiB
Python
82 lines
2.8 KiB
Python
import os
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from FlagEmbedding import FlagModel, FlagReranker
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from src.config import EMBED_MODEL_INFO, RERANKER_LIST
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from src.utils.logging_config import setup_logger
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logger = setup_logger("EmbeddingModel")
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class EmbeddingModel(FlagModel):
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def __init__(self, model_info, config, **kwargs):
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self.info = model_info
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model_name_or_path = config.model_local_paths.get(model_info.name, model_info.default_path)
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logger.info(f"Loading embedding model {model_info.name} from {model_name_or_path}")
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super().__init__(model_name_or_path,
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query_instruction_for_retrieval=model_info.get("query_instruction", None),
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use_fp16=False, **kwargs)
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logger.info(f"Embedding model {model_info.name} loaded")
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class Reranker(FlagReranker):
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def __init__(self, config, **kwargs):
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assert config.reranker in RERANKER_LIST.keys(), f"Unsupported Reranker: {config.reranker}, only support {RERANKER_LIST.keys()}"
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model_name_or_path = config.model_local_paths.get(config.reranker, RERANKER_LIST[config.reranker])
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logger.info(f"Loading Reranker model {config.reranker} from {model_name_or_path}")
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super().__init__(model_name_or_path, use_fp16=True, **kwargs)
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logger.info(f"Reranker model {config.reranker} loaded")
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from zhipuai import ZhipuAI
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class ZhipuEmbedding:
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def __init__(self, model_info, config) -> None:
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self.config = config
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self.model_info = model_info
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self.client = ZhipuAI(api_key=os.getenv("ZHIPUAPI"))
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logger.info("Zhipu Embedding model loaded")
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self.query_instruction_for_retrieval = "为这个句子生成表示以用于检索相关文章："
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def predict(self, message):
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data = []
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for i in range(0, len(message), 10):
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group_msg = message[i:i+10]
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response = self.client.embeddings.create(
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model=self.model_info.default_path,
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input=group_msg,
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)
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data.extend([a.embedding for a in response.data])
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return data
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def encode(self, message):
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return self.predict(message)
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def encode_queries(self, queries):
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# queries = [self.query_instruction_for_retrieval + query for query in queries]
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return self.predict(queries)
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def get_embedding_model(config):
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if not config.enable_knowledge_base:
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return None
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assert config.embed_model in EMBED_MODEL_INFO.keys(), f"Unsupported embed model: {config.embed_model}, only support {EMBED_MODEL_INFO.keys()}"
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if config.embed_model in ["bge-large-zh-v1.5"]:
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model = EmbeddingModel(EMBED_MODEL_INFO[config.embed_model], config)
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if config.embed_model in ["zhipu-embedding-2", "zhipu-embedding-3"]:
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model = ZhipuEmbedding(EMBED_MODEL_INFO[config.embed_model], config)
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return model |