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import hashlib
import os
from pathlib import Path
from typing import Dict, List
import ollama
from langchain_core.documents import Document
from loguru import logger as log
from qdrant_client.http.models import StrictFloat
from tqdm import tqdm
from .vector import Point
class Encoder:
def __init__(self) -> None:
self.model = os.environ["ENCODER_MODEL"]
self.query_prompt = "Represent this sentence for searching relevant passages: "
def __encode(self, prompt: str) -> List[StrictFloat]:
return list(ollama.embeddings(model=self.model, prompt=prompt)["embedding"])
def __get_source(self, metadata: Dict[str, str]) -> str:
source = metadata["source"]
return Path(source).name
def encode_document(self, chunks: List[Document]) -> List[Point]:
log.debug("Encoding document...")
return [
Point(
id=hashlib.sha256(
chunk.page_content.encode(encoding="utf-8")
).hexdigest(),
vector=self.__encode(chunk.page_content),
payload={
"text": chunk.page_content,
"source": self.__get_source(chunk.metadata),
},
)
for chunk in tqdm(chunks)
]
def encode_query(self, query: str) -> List[StrictFloat]:
log.debug(f"Encoding query: {query}")
if self.model == "mxbai-embed-large":
query = self.query_prompt + query
return self.__encode(query)
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