使用C#在一个Bot中进行多个QnA服务 [英] Multiple QnA Service in one Bot using C#

问题描述

我确实有3个QnA服务.我希望它们可以同时在单个BOT中使用.如何使用C#来实现.我最初的想法是将KB ID和Sub Key放入数组中(如何实现该数组或数组是否起作用?).我在Node.JS中看到了一些代码，但无法弄清楚如何在C#中转换代码.

I do have 3 QnA Service. I want them to be used in a single BOT at the same time. How can this be implemented using C#. My initial idea is to put the KB ID and Sub Key into an array (how to implement that or would an array works?).. I saw some code in Node.JS but I cannot figure it out how to convert the code in C#.

public class QnaDialog : QnAMakerDialog
{
    public QnaDialog() : base(
        new QnAMakerService(new QnAMakerAttribute(ConfigurationManager.AppSettings["QnaSubscriptionKey1"],
        ConfigurationManager.AppSettings["QnaKnowledgebaseId1"], "Hmm, I wasn't able to find an article about that. Can you try asking in a different way?", 0.5)),

        new QnAMakerService(new QnAMakerAttribute(ConfigurationManager.AppSettings["QnaSubscriptionKey2"],
        ConfigurationManager.AppSettings["QnaKnowledgebaseId2"], "Hmm, I wasn't able to find an article about that. Can you try asking in a different way?", 0.5)),

        new QnAMakerService(new QnAMakerAttribute(ConfigurationManager.AppSettings["QnaSubscriptionKey3"],
        ConfigurationManager.AppSettings["QnaKnowledgebaseId4"], "Hmm, I wasn't able to find an article about that. Can you try asking in a different way?", 0.5))
        )
    {
    }
}

推荐答案

通过在属性中提供多种服务，您可以在单个bot中使用多个QnAMaker知识库.

You can use several QnAMaker knowledge bases in a single bot by providing several services in the attributes.

使用Nuget包BotBuilder.CognitiveServices中的QnAMakerDialog的基本实现是:

A basic implementation using QnAMakerDialog from Nuget package BotBuilder.CognitiveServices would be:

[Serializable]
[QnAMaker("QnaSubscriptionKey1", "QnaKnowledgebaseId1", "Hmm, I wasn't able to find an article about that. Can you try asking in a different way?", 0.50, 3)]
[QnAMaker("QnaSubscriptionKey2", "QnaKnowledgebaseId2", "Hmm, I wasn't able to find an article about that. Can you try asking in a different way?", 0.5, 3)]
[QnAMaker("QnaSubscriptionKey3", "QnaKnowledgebaseId3", "Hmm, I wasn't able to find an article about that. Can you try asking in a different way?", 0.5, 3)]
public class RootDialog : QnAMakerDialog
{
}

但(是的，但是有一个但是")，在某些情况下，您在处理邮件时可能会遇到异常.由于QnAMakerDialog是开源的(来源在此处)，您可以在MessageReceivedAsync中轻松发现问题在于返回服务调用:

BUT (yes, there is a "but") you may encounter an exception during the treatment of your messages in some cases. As QnAMakerDialog is open-sourced (sources are here) you can easily discover that the problem is in the implementation of the return of the services calls, in MessageReceivedAsync:

var sendDefaultMessageAndWait = true;
qnaMakerResults = tasks.FirstOrDefault(x => x.Result.ServiceCfg != null)?.Result;
if (tasks.Count(x => x.Result.Answers?.Count > 0) > 0)
{
    var maxValue = tasks.Max(x => x.Result.Answers[0].Score);
    qnaMakerResults = tasks.First(x => x.Result.Answers[0].Score == maxValue).Result;

    if (qnaMakerResults != null && qnaMakerResults.Answers != null && qnaMakerResults.Answers.Count > 0)
    {
        if (this.IsConfidentAnswer(qnaMakerResults))
        {
            await this.RespondFromQnAMakerResultAsync(context, message, qnaMakerResults);
            await this.DefaultWaitNextMessageAsync(context, message, qnaMakerResults);
        }
        else
        {
            feedbackRecord = new FeedbackRecord { UserId = message.From.Id, UserQuestion = message.Text };
            await this.QnAFeedbackStepAsync(context, qnaMakerResults);
        }

        sendDefaultMessageAndWait = false;
    }
}

if (sendDefaultMessageAndWait)
{
    await context.PostAsync(qnaMakerResults.ServiceCfg.DefaultMessage);
    await this.DefaultWaitNextMessageAsync(context, message, qnaMakerResults);
}

在此代码中，如果并非您所有的服务都对您的问题有答案(即:如果您的QnAMaker KB中至少有一个没有对您的问题的回答)，则此行代码将中断. strong>

In this code, this line of code will break if not all of your services have an answer for your question (ie: if at least one of your QnAMaker KB does not have an answer for your question)

tasks.Max(x => x.Result.Answers[0].Score);

解决方法:例如，您可以通过获取源代码并修复这种方法来实现自己的QnAMakerDialog:

Workaround: you can implement you own QnAMakerDialog by getting the sources and fixing the method like this for example:

public async Task MessageReceivedAsync(IDialogContext context, IAwaitable<IMessageActivity> argument)
{
    var message = await argument;

    if (message != null && !string.IsNullOrEmpty(message.Text))
    {
        var tasks = this.services.Select(s => s.QueryServiceAsync(message.Text)).ToArray();
        await Task.WhenAll(tasks);

        if (tasks.Any())
        {
            var sendDefaultMessageAndWait = true;
            qnaMakerResults = tasks.FirstOrDefault(x => x.Result.ServiceCfg != null)?.Result;

            var qnaMakerFoundResults = tasks.Where(x => x.Result.Answers.Any()).ToList();
            if (qnaMakerFoundResults.Any())
            {
                var maxValue = qnaMakerFoundResults.Max(x => x.Result.Answers[0].Score);
                qnaMakerResults = qnaMakerFoundResults.First(x => x.Result.Answers[0].Score == maxValue).Result;

                if (qnaMakerResults?.Answers != null && qnaMakerResults.Answers.Count > 0)
                {
                    if (this.IsConfidentAnswer(qnaMakerResults))
                    {
                        await this.RespondFromQnAMakerResultAsync(context, message, qnaMakerResults);
                        await this.DefaultWaitNextMessageAsync(context, message, qnaMakerResults);
                    }
                    else
                    {
                        feedbackRecord = new FeedbackRecord { UserId = message.From.Id, UserQuestion = message.Text };
                        await this.QnAFeedbackStepAsync(context, qnaMakerResults);
                    }

                    sendDefaultMessageAndWait = false;
                }
            }

            if (sendDefaultMessageAndWait)
            {
                await context.PostAsync(qnaMakerResults.ServiceCfg.DefaultMessage);
                await this.DefaultWaitNextMessageAsync(context, message, qnaMakerResults);
            }
        }
    }
}

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