Context-based natural language processing

A system, comprising:

• one or more computers each including at least one processor and a memory storing processor-executable code, the one or more computers configured to:
• maintain a plurality of dialog system rules;
• receive at least one user request based on input provided by a user during a current user session via a dialog system interface, wherein the at least one user request includes speech input;
• determine user request text for the at least one user request, wherein determining the user request text includes performing speech recognition to convert the speech input to the user request text;
• determine an intent for the at least one user request based on the user request text;
• determine, based on the user request text for the at least one user request, one or more conversational contexts for the current user session;
• provide a fulfillment to the user request based on the intent, wherein the fulfillment satisfies the intent;
• receive, in response to providing the fulfillment to the user request, an additional user request based on additional input provided by the user during the current user session via the dialog system interface, wherein the additional user request includes additional speech input;
• determine additional user request text for the additional user request, wherein determining the additional user request text includes performing speech recognition to convert the additional speech input to the additional user request text;
• identify, based on the additional user request text and based on one or more of the conversational contexts for the current user session, a given conversational context of the one or more conversational contexts for the additional user request;
• select, from a plurality of dialog system rules, a given dialog system rule based on it being associated with the identified given conversational context;
• and
• generate a response to the additional user request, generating the response to the additional user request comprising:
• applying the given dialog system rule to at least a part of the additional user request text converted from the additional speech input.

A non-transitory processor-readable medium having instructions stored thereon, which when executed by one or more processors, cause the one or more processors to implement a method, comprising:

• receiving at least one user request based on input provided by a user during a current user session via a dialog system interface, wherein the at least one user request includes speech input;
• determining user request text for the at least one user request, wherein determining the user request text includes performing speech recognition to convert the speech input to the user request text;
• determining an intent for the at least one user request based on the user request text;
• determining, based on the user request text for the at least one user request, one or more conversational contexts for the current user session;
• providing a fulfillment to the user request based on the intent, wherein the fulfillment satisfies the intent;
• receiving, in response to providing the fulfillment to the user request, an additional user request based on additional input provided by the user during the current user session via the dialog system interface, wherein the additional user request includes additional speech input;
• determining additional user request text for the additional user request, wherein determining the additional user request text includes performing speech recognition to convert the additional speech input to the additional user request text;
• identifying, based on the additional user request text and based on one or more of the conversational contexts for the current user session, a given conversational context of the one or more conversational contexts for the additional user request;
• selecting, from a plurality of dialog system rules, a given dialog system rule based on it being associated with the identified given conversational context;
• and
• generating a response to the additional user request, generating the response to the additional user request comprising:
• applying the given dialog system rule to at least a part of the additional user request text converted from the additional speech input.