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前言

通用文本向量，是达摩院基于LLM底座的多语言文本统一向量模型，面向全球多个主流语种，提供高水准的向量服务，帮助开发者将文本数据快速转换为高质量的向量数据。

模型中文名

模型英文名

向量维度

单次请求文本最大行数

单行最大输入字符长度

支持语种

通用文本向量

text-embedding-v1

1536

25

2048

中文、英语、西班牙语、法语、葡萄牙语、印尼语。

text-embedding-async-v1

1536

100000

2048

中文、英语、西班牙语、法语、葡萄牙语、印尼语。

快速调用

调用前准备

  1. 已开通服务并获得API-KEY：开通DashScope并创建API-KEY

  2. 已安装最新版SDK：安装DashScope SDK。

代码示例

API-KEY设置

export DASHSCOPE_API_KEY=YOUR_DASHSCOPE_API_KEY

同步调用示例

同步调用支持输入单条文本，对单条文本进行处理返回结果。

import dashscope
from http import HTTPStatus
from dashscope import TextEmbedding

def embed_with_str():
    resp = TextEmbedding.call(
        model=TextEmbedding.Models.text_embedding_v1,
        input='衣服的质量杠杠的，很漂亮，不枉我等了这么久啊，喜欢，以后还来这里买')
    if resp.status_code == HTTPStatus.OK:
        print(resp)
    else:
        print(resp)
if __name__ == '__main__':
    embed_with_str()

import java.util.Arrays;
import java.util.concurrent.Semaphore;
import com.alibaba.dashscope.common.ResultCallback;
import com.alibaba.dashscope.embeddings.TextEmbedding;
import com.alibaba.dashscope.embeddings.TextEmbeddingParam;
import com.alibaba.dashscope.embeddings.TextEmbeddingResult;
import com.alibaba.dashscope.exception.ApiException;
import com.alibaba.dashscope.exception.NoApiKeyException;

public final class Main {
    public static void basicCall() throws ApiException, NoApiKeyException{
        TextEmbeddingParam param = TextEmbeddingParam
        .builder()
        .model(TextEmbedding.Models.TEXT_EMBEDDING_V1)
        .texts(Arrays.asList("风急天高猿啸哀", "渚清沙白鸟飞回", "无边落木萧萧下", "不尽长江滚滚来")).build();
        TextEmbedding textEmbedding = new TextEmbedding();
        TextEmbeddingResult result = textEmbedding.call(param);
        System.out.println(result);
    }

  public static void main(String[] args){
      try {
        basicCall();
    } catch (ApiException | NoApiKeyException e) {
        System.out.println(e.getMessage());
    }
    System.exit(0);
  }
}

同步调用输出

{
    "status_code": 200,
    "request_id": "617b3670-6f9e-9f47-ad57-997ed8aeba6a",
    "code": "",
    "message": "",
    "output": {
        "embeddings": [
            {
                "embedding": [
                    0.09393704682588577,
                    2.4155092239379883,
                    -1.8923076391220093,
                    .,
                    .,
                    .

                ],
                "text_index": 0
            }
        ]
    },
    "usage": {
        "total_tokens": 23
    }
}

批处理接口调用

如果您有大批量数据需要处理，可以使用批处理接口。

from dashscope import BatchTextEmbedding


def call():
    result = BatchTextEmbedding.call(BatchTextEmbedding.Models.text_embedding_async_v1,
                                     url="https://dashscope.oss-cn-beijing.aliyuncs.com/samples/text/text-embedding-test.txt",
                                     text_type="document")
    print(result)
    
if __name__ == '__main__':
    call()

import com.alibaba.dashscope.embeddings.BatchTextEmbedding;
import com.alibaba.dashscope.embeddings.BatchTextEmbeddingParam;
import com.alibaba.dashscope.embeddings.BatchTextEmbeddingResult;
import com.alibaba.dashscope.exception.ApiException;
import com.alibaba.dashscope.exception.NoApiKeyException;
import com.alibaba.dashscope.task.AsyncTaskListParam;
import com.alibaba.dashscope.task.AsyncTaskListResult;
import com.alibaba.dashscope.utils.JsonUtils;


public class BatchTextEmbeddingUsage {
    public static void basicCall() throws ApiException, NoApiKeyException {
        BatchTextEmbeddingParam param = BatchTextEmbeddingParam.builder()
                .model(BatchTextEmbedding.Models.TEXT_EMBEDDING_ASYNC_V1)
                .url("https://modelscope.oss-cn-beijing.aliyuncs.com/resource/text_embedding_file.txt")
                .build();
        BatchTextEmbedding textEmbedding = new BatchTextEmbedding();
        BatchTextEmbeddingResult result = textEmbedding.call(param);
        System.out.println(result);
    }

    public static void main(String[] args) {
        try {
            basicCall();
        } catch (ApiException | NoApiKeyException e) {
            System.out.println(e.getMessage());
        }
        System.exit(0);
    }

python示例输出

{
    "status_code": 200,
    "request_id": "e941b97b-3b82-9de5-9ef0-512815b9c0ca",
    "code": null,
    "message": "",
    "output": {
        "task_id": "0b8ccc25-dec8-4d5f-bb84-cfe2ea580f9d",
        "task_status": "SUCCEEDED",
        "url": "The embedding result file url.",
        "submit_time": "2023-09-07 10:22:52.459",
        "scheduled_time": "2023-09-07 10:22:52.481",
        "end_time": "2023-09-07 10:22:53.419"
    },
    "usage": {
        "total_tokens": 384
    }
}

了解更多

通用文本向量同步调用代码示例如上，有关通用文本向量模型API的详细调用文档可前往同步接口API详情页面进行了解。批量数据异步接口代码示例详见批处理接口API详情