如何在 AWS Lex Chatbot 中获得置信度

Question

是否有任何方法可以获得置信度，可能使用来自 cloudwatch 的指标或创建新指标来获取它？

Answer 1

答案是否定的。 AWS LEX 不提供匹配意图的置信度。不知道为什么，但我认为这是一个很大的缺点。大多数意图引擎，如 Google Dialogflow、Microsoft LUIS、IBM Watson，都提供置信度信息，但 LEX 不提供。您可以看到 Lex 对 lambda 函数的响应中没有置信字段，如 official documenataion

中所述

{
  "currentIntent": {
    "name": "intent-name",
    "slots": {
      "slot name": "value",
      "slot name": "value"
    },
    "slotDetails": {
      "slot name": {
        "resolutions" : [
          { "value": "resolved value" },
          { "value": "resolved value" }
        ],
        "originalValue": "original text"
      },
      "slot name": {
        "resolutions" : [
          { "value": "resolved value" },
          { "value": "resolved value" }
        ],
        "originalValue": "original text"
      }
    },
    "confirmationStatus": "None, Confirmed, or Denied (intent confirmation, if configured)"
  },
  "bot": {
    "name": "bot name",
    "alias": "bot alias",
    "version": "bot version"
  },
  "userId": "User ID specified in the POST request to Amazon Lex.",
  "inputTranscript": "Text used to process the request",
  "invocationSource": "FulfillmentCodeHook or DialogCodeHook",
  "outputDialogMode": "Text or Voice, based on ContentType request header in runtime API request",
  "messageVersion": "1.0",
  "sessionAttributes": { 
     "key": "value",
     "key": "value"
  },
  "requestAttributes": { 
     "key": "value",
     "key": "value"
  },
  "recentIntentSummaryView": [
    {
        "intentName": "Name",
        "checkpointLabel": Label,
        "slots": {
          "slot name": "value",
          "slot name": "value"
        },
        "confirmationStatus": "None, Confirmed, or Denied (intent confirmation, if configured)",
        "dialogActionType": "ElicitIntent, ElicitSlot, ConfirmIntent, Delegate, or Close",
        "fulfillmentState": "Fulfilled or Failed",
        "slotToElicit": "Next slot to elicit
    }
  ]
}