Question

我正在使用Microsoft Bot Framework v4进行一些相当基本的日期和日期范围识别。

大多数示例在企业模板中使用并使用的LUIS识别器的最直接使用不会返回完整的DateTimeV2结构。下面的示例适用于与日期范围相对应的“上周”。这些结果显示在identifierr.result.entities中：

{
  "$instance": {
    "datetime": [
      {
        "startIndex": 8,
        "endIndex": 17,
        "text": "last week",
        "type": "builtin.datetimeV2.daterange"
      }
    ]
  },
  "datetime": [
    {
      "type": "daterange",
      "timex": [
        "2018-W43"
      ]
    }
  ]
}

请注意，日期范围没有开始/结束标记。这似乎是DateTime2规范的不完整版本。 https://docs.microsoft.com/en-us/azure/cognitive-services/LUIS/luis-reference-prebuilt-datetimev2

如果使用特定的DateTime解析器，则可以获得所需的更详细的开始和结束信息。

[timex, 2018-W43]
[type, daterange]
[start, 2018-10-22]
[end, 2018-10-29]

这些步骤似乎几乎是多余的，因为更通用的方法返回Timex格式的字符串，该字符串包含开始和结束信息，但不是易于使用的格式。

我相信我缺少有关配置LUIS和识别器的基本知识。

下面的代码段是csharp_dotnetcore / 12.nlp-with-luis示例（https://github.com/Microsoft/BotBuilder-Samples/tree/master/samples/csharp_dotnetcore/12.nlp-with-luis）的修改版本

我在luis.ai中添加了一个预建的DateTimeV2实体。

public async Task OnTurnAsync(ITurnContext turnContext, CancellationToken cancellationToken = default(CancellationToken))
{
    IList<Dictionary<string, string>> resolutionValues = null;

    if (turnContext.Activity.Type == ActivityTypes.Message)
    {

        // Use the more generic approach.
        var recognizerResult = await _services.LuisServices[LuisKey].RecognizeAsync(turnContext, cancellationToken);
        var topIntent = recognizerResult?.GetTopScoringIntent();
        if (topIntent != null && topIntent.HasValue && topIntent.Value.intent != "None")
        {
            await turnContext.SendActivityAsync($"==>LUIS Top Scoring Intent: {topIntent.Value.intent}, Score: {topIntent.Value.score}\n");
            if (recognizerResult.Entities != null)
            {
                await turnContext.SendActivityAsync($"==>LUIS Entities Found: {recognizerResult.Entities.ToString()}\n");
            }
        }
        else
        {
            var msg = @"No LUIS intents were found. Try show me last week.";
            await turnContext.SendActivityAsync(msg);
        }

        // Check LUIS model using specific DateTime Recognizer.
        var culture = Culture.English;
        var r = DateTimeRecognizer.RecognizeDateTime(turnContext.Activity.Text, culture);
        if (r.Count > 0 && r.First().TypeName.StartsWith("datetimeV2"))
        {
            var first = r.First();
            resolutionValues = (IList<Dictionary<string, string>>)first.Resolution["values"];
            var asString = string.Join(";", resolutionValues[0]);
            await turnContext.SendActivityAsync($"==>LUIS: resolutions values: {asString}\n");
            var subType = first.TypeName.Split('.').Last();
            if (subType.Contains("date") && !subType.Contains("range"))
            {
                // a date (or date & time) or multiple
                var moment = resolutionValues.Select(v => DateTime.Parse(v["value"])).FirstOrDefault();
                await turnContext.SendActivityAsync($"==>LUIS DateTime Moment: {moment}\n");
            }
            else if (subType.Contains("date") && subType.Contains("range"))
            {
                // range
                var from = DateTime.Parse(resolutionValues.First()["start"]);
                var to = DateTime.Parse(resolutionValues.First()["end"]);
                await turnContext.SendActivityAsync($"==>LUIS DateTime Range: from: {from} to: {to}\n");
            }
        }
    }
    else if (turnContext.Activity.Type == ActivityTypes.ConversationUpdate)
    {
        // Send a welcome message to the user and tell them what actions they may perform to use this bot
        await SendWelcomeMessageAsync(turnContext, cancellationToken);
    }
    else
    {
        await turnContext.SendActivityAsync($"{turnContext.Activity.Type} event detected", cancellationToken: cancellationToken);
    }
}

是否有直接方法从更通用的识别器中获取更完整的DateTimeV2实体？可能链接识别器？

Answer 1

为了查看整个API结果，在创建Luis Recognizer时需要设置一个选项。 includeApiResults默认为false，因此将该参数设置为true会使整个API结果包含在luis结果中。

因此，在BotServices.cs中创建Luis服务时，它将如下所示：

case ServiceTypes.Luis:
     {
        var luis = service as LuisService;
        var luisApp = new LuisApplication(luis.AppId, luis.SubscriptionKey, luis.GetEndpoint());
        LuisServices.Add(service.Id, new TelemetryLuisRecognizer(luisApp, includeApiResults:true));
        break;
    }

因此，现在luis对象中的属性既包含情感分析又包含整个luis响应。

{{
  "query": "show me orders for last week",
  "alteredQuery": null,
  "topScoringIntent": {
    "intent": "Shopping.CheckOrderStatus",
    "score": 0.619710267
  },
  "intents": null,
  "entities": [
    {
      "entity": "last week",
      "type": "builtin.datetimeV2.daterange",
      "startIndex": 19,
      "endIndex": 27,
      "resolution": {
        "values": [
          {
            "timex": "2018-W43",
            "type": "daterange",
            "start": "2018-10-22",
            "end": "2018-10-29"
          }
        ]
      }
    }
  ],
  "compositeEntities": null,
  "sentimentAnalysis": {
    "label": "negative",
    "score": 0.241115928
  }
}}

从识别器

1 个答案: