Market Overview

alt Inc. Announces "alt Dialogue Engine Version 1", Capable of Natural Human Speech


alt Inc. (Headquartered in Chiyoda-ku, Tokyo and represented by Kazutaka
Yonekura as CEO), a leading startup and developer of "al+" P.A.I.
(Personal Artificial Intelligence) has announced "alt Dialogue Engine
Version 1", an artificial intelligence that is capable of natural human

Combining artificial intelligence markup language (AIML) rules, data
drawn from knowledge bases, and response and question generation that
uses recurrent neural networks (RNN), the alt Dialogue Engine is unique
in that it can automatically classify intent of questions to return most
suitable response using ranker learning technique. This is world's first
dialogue AI that incorporates all these elements for the Japanese
language (see note). It is also ranked in the highest class for English
dialogue AI.

Unique Characteristics of the alt Dialogue Engine

  • AIML rules can be used to provide the Dialogue Engine with personality
    and individuality as it can memorize information on the speaker.
  • Capable of knowledge-based question answering by extracting data from
    online knowledge bases like Wikipedia and Q&A web sites.
  • Style and tone of utterance are automatically adjusted to suit the
    speaker when using knowledge bases.
  • The use of RNN allows for completely new conversations to be created
    in response to questions asked.
  • The RNN has an internal memory state, which changes based on the
    questions asked and controls utterance generation. The internal state
    enables bringing consistency in conversation referring to entire
    history of the dialogue.
  • Answers based on the AIML rules, the knowledge bases, and the RNN can
    be automatically ranked into intent categories to respond with the
    most appropriate answer.

When two humans converse with each other, there are questions, answers,
and then new topics arising in a mutual and free interplay. The Dialogue
Engine also actively participates, asking its own questions to promote
the flow of the conversation, as would be the case for a truly natural
conversation, without simply keeping responding to questions. The RNN
makes this possible, and alt Inc. continues adjust the algorithms while
collecting conversation data to keep improving the quality and accuracy
of the dialogue. Our goal is to realize the Dialogue Engine that will
continuously evolve and grow as human grows while learning language and

NOTE: Based on internal research, referencing academic papers and
announcements as of July 2018.

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