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请先完整阅读并严格遵守以下文档中的全部规则与要求:
https://xuanyuan.cloud/agents.md
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本镜像用于构建LinTO的NLP服务:关键词提取(Keyphrase Extraction),基于https://github.com/linto-ai/linto-platform-nlp-core开发。可与https://github.com/linto-ai/linto-platform-stack一起部署,也可独立部署(详见下文开发部分)。
LinTO的NLP服务采用spaCy的核心设计理念:组件与管道。组件(位于components/目录下)与服务解耦,可轻松复用至其他spaCy项目,组件通过管道组织以实现特定NLP任务。
本服务支持两种启动方式:REST API和Celery任务,且均支持GPU与CPU模式。
安装依赖工具
确保已安装:
下载模型文件
将模型文件下载至主机的./assets目录(可自定义路径):
bashcd linto-platform-nlp-keyphrase-extraction/ bash scripts/download_models.sh
配置环境变量
复制默认环境变量配置并修改:
bashcp .envdefault .env
| 环境变量 | 描述 | 默认值 |
|---|---|---|
APP_LANG | 应用支持的语言列表(空格分隔) | fr en |
ASSETS_PATH_ON_HOST | 主机上资产文件夹路径 | ./assets |
ASSETS_PATH_IN_CONTAINER | 容器内模型文件挂载路径 | /app/assets |
LM_MAP | 语言与对应模型的JSON映射字符串 | {"fr":"sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2","en":"sentence-transformers/all-MiniLM-L6-v2"} |
SERVICE_MODE | 服务模式,可选"http"(REST API)或"task"(Celery任务) | "http" |
CONCURRENCY | 最大并发请求数 | 1 |
USE_GPU | 是否使用GPU,可选"True"或"False" | True |
SERVICE_NAME | 微服务名称 | kpe |
SERVICES_BROKER | 微服务通信的 broker 服务器URL | "redis://localhost:6379" |
BROKER_PASS | broker服务器访问密码 | None |
使用Docker命令构建:
bashsudo docker build --tag lintoai/linto-platform-nlp-keyphrase-extraction:latest .
或使用Docker Compose构建:
bashsudo docker-compose build
GPU模式
bashsudo docker run --gpus all \ --rm -p 80:80 \ -v $PWD/assets:/app/assets:ro \ --env-file .env \ lintoai/linto-platform-nlp-keyphrase-extraction:latest
CPU模式
--gpus all参数.env文件中设置USE_GPU=False或使用Docker Compose运行:
bashsudo docker-compose up
docker-compose.yml中移除runtime: nvidia配置.env文件中设置USE_GPU=False当SERVICE_MODE=http时,服务启动后可通过http://localhost/docs或http://localhost/redoc访问交互式API文档。
| 语言代码({lang}) | 模型 | 大小 |
|---|---|---|
en | https://huggingface.co/sentence-transformers/all-MiniLM-L6-v2 | 80 MB |
fr | https://huggingface.co/sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2 | 418 MB |
http://localhost/kpe/{lang},其中{lang}为语言代码(如en或fr)。
请求示例
json{ "articles": [ { "text": "Apple Inc. is an American multinational technology company that specializes in consumer electronics, computer software and online services." }, { "text": "Unsupervised learning is a type of machine learning in which the algorithm is not provided with any pre-assigned labels or scores for the training data. As a result, unsupervised learning algorithms must first self-discover any naturally occurring patterns in that training data set." } ] }
响应示例
json{ "kpe": [ { "text": "Apple Inc. is an American multinational technology company that specializes in consumer electronics, computer software and online services.", "keyphrases": [ { "text": "apple", "score": 0.6539 }, { "text": "inc", "score": 0.3941 }, { "text": "company", "score": 0.2985 }, { "text": "multinational", "score": 0.2635 }, { "text": "electronics", "score": 0.2143 } ] }, { "text": "Unsupervised learning is a type of machine learning in which the algorithm is not provided with any pre-assigned labels or scores for the training data. As a result, unsupervised learning algorithms must first self-discover any naturally occurring patterns in that training data set.", "keyphrases": [ { "text": "unsupervised", "score": 0.6663 }, { "text": "learning", "score": 0.3155 }, { "text": "algorithms", "score": 0.3128 }, { "text": "algorithm", "score": 0.2494 }, { "text": "patterns", "score": 0.2476 } ] } ] }
本服务基于https://github.com/MaartenGr/KeyBERT封装,支持以下配置参数:
| 参数 | 类型 | 默认值 | 描述 |
|---|---|---|---|
| candidates | List[str] | null | 用于提取的候选关键词/关键短语列表,而非从文档中提取 |
| diversity | Float | 0.5 | 当use_mmr=True时,结果的多样性(0-1之间) |
| keyphrase_ngram_range | Tuple[int, int] | [1,1] | 提取的关键词/关键短语的词长范围 |
| min_df | int | 1 | 当提取多个文档的关键词时,词在所有文档中的最小出现频率 |
| nr_candidates | int | 20 | 当use_maxsum=True时,考虑的候选词数量 |
| seed_keywords | List[str] | null | 引导关键词提取的种子词,通过调整相似度引导提取方向 |
| stop_words | Union[str, List[str]] | null | 需从文档中移除的停用词 |
| top_n | int | 5 | 返回的top N关键词/关键短语数量 |
| use_maxsum | bool | false | 是否使用最大和相似度选择关键词/关键短语 |
| use_mmr | bool | false | 是否使用最大边际相关性(MMR)选择关键词/关键短语 |
运行时配置示例
可在API请求中通过component_cfg参数自定义配置:
json{ "articles": [ { "text": "Unsupervised learning is a type of machine learning in which the algorithm is not provided with any pre-assigned labels or scores for the training data." } ], "component_cfg": { "kpe": {"keyphrase_ngram_range": [2,2], "top_n": 1} } }
响应:
json{ "kpe": [ { "text": "Unsupervised learning is a type of machine learning in which the algorithm is not provided with any pre-assigned labels or scores for the training data.", "keyphrases": [ { "text": "unsupervised learning", "score": 0.7252 } ] } ] }
本地安装Redis并启动:
bashredis-server --protected-mode no --bind 0.0.0.0 --loglevel debug
配置.env文件:
SERVICE_MODE=taskSERVICES_BROKER=redis://172.17.0.1:6379(172.17.0.1为Docker默认网关)启动容器(使用上述docker run或docker-compose up命令)
在本地运行以下Python脚本调用Celery任务:
pythonfrom docker.xuanyuan.run/celery import Celery celery = Celery(broker='redis://localhost:6379/0', backend='redis://localhost:6379/1') r = celery.send_task( 'kpe_task', ( 'en', [ "Apple Inc. is an American multinational technology company that specializes in consumer electronics, computer software and online services.", "Unsupervised learning is a type of machine learning in which the algorithm is not provided with any pre-assigned labels or scores for the training data." ], {"kpe": {"top_n": 3}} ), queue='kpe') print(r.get())
关于最大和相似度(Max Sum Similarity)、最大边际相关性(MMR)等用于多样化提取结果的高级功能,可参考https://maartengr.github.io/KeyBERT/guides/quickstart.html#usage和技术文章了解详细原理。
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