时间戳

首页 > 解决方案 > SageMaker Javascript SDK 端点调用错误：“CustomerError：无法将有效负载解析为数值”

javascript - SageMaker Javascript SDK 端点调用错误：“CustomerError：无法将有效负载解析为数值”

问题描述

当我在 AWS CloudWatch 上遇到此错误时，我正在从我的角度前端调用 SageMaker 端点，该错误是关于我的模型从数据中进行推断的（以逗号分隔的字符串的形式，目标值位于第一个索引处）我正在发送:无法解析数值。我用来调用端点的字符串是：“1533071820,0.05619,0.05619,0.05611,0.05611,0.006076\n”

字符串请求 = "1533071820,0.05619,0.05619,0.05611,0.05611,0.006076\n"

ByteBufferbuf = ByteBuffer.wrap(request.getBytes()); 调用端点请求.setBody(buf); Use the SageMaker API AmazonSageMakerRuntime amazonSageMaker = AmazonSageMakerRuntimeClientBuilder.defaultClient(); Invoke the model endpoint on SageMaker InvokeEndpointResult invokeEndpointResult = amazonSageMaker.invokeEndpoint(invokeEndpointRequest);

我期望从端点得到的结果是一个带有“score”属性的 JSON 对象，格式为：{"predictions": [{"score": xxxxxxx}]}

我从 IDE 日志中收到“ModelError：无法评估有效负载”和“无法解析 CloudWatch 上的数值”

标签： javascriptnode.jsaws-sdkamazon-sagemaker

解决方案

因此，在调试此问题时，我发现由于末尾的换行符，模型假设我的输入中有 2 个字符串，但只有一个。因此，错误。所以我只是将字符串更改为：“1533071820,0.05619,0.05619,0.05611,0.05611,0.006076”。如果我要解析多个有效负载（批处理），则为：“1533071820,0.05619,0.05619,0.05611,0.05611,0.006076\n1533071820,0.05619,0.05619,0.05611,0.05611,0.006076”字符，更重要的是，末尾没有换行符

推荐阅读