问题
I am trying to build an Alexa Skills Kit, where a user can invoke an intent by saying something like
GetFriendLocation where is {Friend}
and for Alexa to recognize the variable friend I have to define all the possible values in LIST_OF_Friends file. But what if I do not know all the values for Friend and still would like to make a best match for ones present in some service that my app has access to.
回答1:
Supposedly if you stick a small dictionary into a slot (you can put up to 50,000 samples), it becomes a "generic" slot and becomes very open to choosing anything, rather than what is given to it. In practice, I haven't had much luck with this.
回答2:
It is a maxim in the field of Text To Speech that the more restrictive the vocabulary, the greater the accuracy. And, conversely, the greater the vocabulary, the lower the accuracy.
A system like VoiceXML (used mostly for telephone prompt software) has a very strict vocabulary, and generally performs well for the domains it has been tailored for.
A system like Watson TTS is completely open, but makes up for it's lack of accuracy by returning a confidence level for several different interpretations of the sounds. In short, it offloads much of the NLP work to you.
Amazon have, very deliberately, chosen a middle road for Alexa. Their intention model allows for more flexibility than VoiceXML, but is not as liberal as a dictation system. The result gives you pretty good options and pretty good quality.
Because of their decisions, they have a voice model where you have to declare, in advance, everything it can recognize. If you do so, you get consistent and good quality recognition. There are ways, as others have said, to "trick" it into supporting a "generic slot". However, by doing so, you are going outside their design and consistency and quality suffer.
回答3:
As far as I know, I don't think you can dynamically add utterances for intents.
But for your specific question, there is a builtin slot call AMAZON.US_FIRST_NAME, which may be helpful.
来源：https://stackoverflow.com/questions/37973563/amazon-alexa-dynamic-variables-for-intent