chore: initial import of standalone agentscope project
Some checks failed
Pre-commit / run (ubuntu-latest) (push) Has been cancelled
Deploy Sphinx documentation to Pages / build_en (ubuntu-latest, 3.10) (push) Has been cancelled
Deploy Sphinx documentation to Pages / build_zh (ubuntu-latest, 3.10) (push) Has been cancelled
Python Unittest Coverage / test (macos-15, 3.10) (push) Has been cancelled
Python Unittest Coverage / test (macos-15, 3.11) (push) Has been cancelled
Python Unittest Coverage / test (macos-15, 3.12) (push) Has been cancelled
Python Unittest Coverage / test (ubuntu-latest, 3.10) (push) Has been cancelled
Python Unittest Coverage / test (ubuntu-latest, 3.11) (push) Has been cancelled
Python Unittest Coverage / test (ubuntu-latest, 3.12) (push) Has been cancelled
Python Unittest Coverage / test (windows-latest, 3.10) (push) Has been cancelled
Python Unittest Coverage / test (windows-latest, 3.11) (push) Has been cancelled
Python Unittest Coverage / test (windows-latest, 3.12) (push) Has been cancelled

This commit is contained in:
2026-03-02 18:21:40 +08:00
commit a842f1861f
561 changed files with 91892 additions and 0 deletions

View File

@@ -0,0 +1,132 @@
# -*- coding: utf-8 -*-
"""
.. _embedding:
嵌入(Embedding)
=========================
AgentScope 中,嵌入模块提供了用于向量生成的统一接口,具有以下特性:
- 支持 **缓存 embedding** 以避免冗余的 API 调用
- 支持 **不同 embedding API 提供商** 并提供一致的接口
AgentScope 内置支持以下 API
.. list-table::
:header-rows: 1
* - API 提供商
- 类
* - OpenAI
- ``OpenAITextEmbedding``
* - Gemini
- ``GeminiTextEmbedding``
* - DashScope
- ``DashScopeTextEmbedding``, ``DashScopeMultiModalEmbedding``
* - Ollama
- ``OllamaTextEmbedding``
所有类都继承自 ``EmbeddingModelBase``,实现了 ``__call__`` 方法并生成包含嵌入和使用信息的 ``EmbeddingResponse`` 对象。
其中 ``DashScopeMultiModalEmbedding`` 支持文本,图像和视频的多模态嵌入。
以 DashScope 嵌入类为例,可以按如下方式使用:
"""
import asyncio
import os
import tempfile
from agentscope.embedding import DashScopeTextEmbedding, FileEmbeddingCache
async def example_dashscope_embedding() -> None:
"""DashScope 文本嵌入的使用示例。"""
texts = [
"法国的首都是什么?",
"巴黎是法国的首都城市。",
]
# 初始化 DashScope 文本嵌入实例
embedding_model = DashScopeTextEmbedding(
model_name="text-embedding-v2",
api_key=os.getenv("DASHSCOPE_API_KEY"),
)
# 从模型获取嵌入
response = await embedding_model(texts)
print("嵌入 ID: ", response.id)
print("嵌入创建时间: ", response.created_at)
print("嵌入使用情况: ", response.usage)
print("嵌入向量:")
print(response.embeddings)
asyncio.run(example_dashscope_embedding())
# %%
# 可以通过继承 ``EmbeddingModelBase`` 并实现 ``__call__`` 方法来自定义 embedding 模型。
#
# Embedding 缓存
# ---------------------
# AgentScope 提供了用于缓存 embedding 的基类 ``EmbeddingCacheBase``,以及基于文件的实现 ``FileEmbeddingCache``。
# 它在 embedding 模块中的工作方式如下:
#
# .. image:: ../../_static/images/embedding_cache.png
# :align: center
# :width: 90%
#
# 要使用缓存,只需将 ``FileEmbeddingCache`` 实例(或自定义缓存)传给模型的构造函数,如下所示:
#
async def example_embedding_cache() -> None:
"""演示带有缓存功能的 embedding。"""
# 示例文本
texts = [
"法国的首都是什么?",
"巴黎是法国的首都城市。",
]
# 为缓存演示创建临时目录
# 在实际应用中,建议使用持久目录以最大发挥缓存效果
cache_dir = tempfile.mkdtemp(prefix="embedding_cache_")
print(f"使用缓存目录: {cache_dir}")
# 使用缓存初始化嵌入模型
# 为演示目的,我们将缓存限制为 100 个文件和 10MB
embedder = DashScopeTextEmbedding(
model_name="text-embedding-v3",
api_key=os.getenv("DASHSCOPE_API_KEY"),
embedding_cache=FileEmbeddingCache(
cache_dir=cache_dir,
max_file_number=100,
max_cache_size=10, # 最大缓存大小MB
),
)
# 第一次调用 - 将从 API 获取并存储在缓存中
print("\n=== 第一次 API 调用(无缓存命中)===")
start_time = asyncio.get_event_loop().time()
response1 = await embedder(texts)
elapsed_time1 = asyncio.get_event_loop().time() - start_time
print(f"来源: {response1.source}") # 应该是 'api'
print(f"耗时: {elapsed_time1:.4f}")
print(f"使用的 token: {response1.usage.tokens}")
# 使用相同文本的第二次调用 - 应该使用缓存
print("\n=== 第二次 API 调用(预期缓存命中)===")
start_time = asyncio.get_event_loop().time()
response2 = await embedder(texts)
elapsed_time2 = asyncio.get_event_loop().time() - start_time
print(f"来源: {response2.source}") # 应该是 'cache'
print(f"耗时: {elapsed_time2:.4f}")
print(
f"使用的 token: {response2.usage.tokens}",
) # 缓存结果应该为 0
print(
f"速度提升: 使用缓存快 {elapsed_time1 / elapsed_time2:.1f}",
)
asyncio.run(example_embedding_cache())