Dialog Device Attribute Matching for Natural Conversation Flow

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Solution Overview

Problem

Existing dialog devices struggle to maintain a natural conversation with users when changing information sources, leading to artificiality in conversational sentences due to weak linkage between sentences generated from different news information.

Innovation Solution

A dialog device and method that includes an information acquisition unit, conversation execution unit, attribute setting unit, and acquisition control unit to ensure continuity by matching attribute information between content information sources, allowing for seamless transitions in conversation topics while maintaining user engagement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If content information is changed frequently to maintain continuous conversation with the user, then the conversation can continue longer, but the linkage between conversational sentences becomes weak and the user feels artificiality

Engineering Contradiction:

Improveconversation durationVSAvoidlinkage between conversational sentences

Core Design Contradiction:

Duration of action of moving objectVSReliability

Solution Approach 1:

The system extracts attribute information from content information and uses it as feedback to select subsequent content information that shares common attributes, ensuring coherent conversation flow while enabling continuous topic changes

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system changes the parameter of content information selection from random or fixed to dynamic selection based on attribute information matching, allowing flexible topic transitions while maintaining conversational coherence

Inventive Principle:

Principle #35Parameter changes

2Productivity

If content information is changed without discretion to enable continuous conversation, then the conversation can proceed without repetition, but the conversational sentences lack natural linkage and appear artificial

Engineering Contradiction:

Improveconversation throughputVSAvoidnaturalness of conversation

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

Attribute information serves as an intermediary between different content information pieces, bridging the gap between unrelated topics and enabling smooth transitions that maintain conversational naturalness

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The attribute information extraction and matching mechanism provides a universal framework that works across different content domains and conversation types, enabling both topic diversity and conversational coherence

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10872603B2Dialog device and dialog method

Publication Date: 2020.12.22 DENSO CORP

AI summary

A dialog device for executing a conversation with a user using a conversational sentence generated from content information is provided. The dialog device includes an information acquisition unit that acquires the content information from an information source, and changes the content information used in generation of the conversational sentence, and continues the conversation with the user. The dialog device sets multiple attribute information pieces with respect to specific content information used in generation of the conversational sentence. The dialog device controls the information acquisition unit to acquire other content information, having at least a part of attribute information pieces equal to the specific content information, as a candidate used in generation of the conversational sentence next to the specific content information.