Voice Dialog Device Emotion Estimation Discrepancy Resolution

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Solution Overview

Problem

Existing voice dialog systems face challenges in accurately estimating user emotions due to discrepancies between different estimation methods, leading to uncertain response creation.

Innovation Solution

A voice dialog device with multiple estimation units that recognize user voice and facial expressions, and a response unit that makes inquiries to resolve discrepancies by confirming the accuracy of emotion estimation results, using past estimation history and weighting methods to improve accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple estimation units estimate emotion by different methods, then the comprehensiveness of emotion recognition is improved, but the reliability of emotion estimation deteriorates due to discrepancies between different methods

Engineering Contradiction:
Improvecomprehensiveness of emotion recognitionVSAvoidreliability of emotion estimation
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The system introduces feedback by making the estimation unit inquire with the user when discrepancies occur between different estimation methods. The user's response serves as feedback to confirm or correct the estimated emotion, thereby resolving the reliability issue while maintaining the comprehensiveness benefit of multiple estimation methods

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The inquiry mechanism acts as an intermediary between the multiple estimation units and the final emotion determination. When discrepancies arise, the intermediary inquiry process mediates by seeking user confirmation, thus resolving the conflict between different estimation results and improving reliability

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If the system makes inquiries to confirm emotion estimation, then the accuracy of emotion recognition is improved, but the time required for response creation increases

Engineering Contradiction:
Improveaccuracy of emotion recognitionVSAvoidtime required for response creation
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The system applies partial action by making inquiries only when necessary - specifically when discrepancies occur between different estimation methods. When estimation results are consistent, no inquiry is made, thus avoiding unnecessary time loss while maintaining high accuracy when needed

Inventive Principle:
Principle #16Partial or excessive action

3Reliability

If the system inquires with the user to resolve discrepancies, then the reliability of emotion estimation is improved, but the complexity of the response creation process increases

Engineering Contradiction:
Improvereliability of emotion estimationVSAvoidcomplexity of response creation process
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The response creation process is segmented into distinct stages: initial emotion estimation by multiple methods, discrepancy detection, conditional inquiry execution, and final response generation. This segmentation makes the complex process more manageable and systematic, reducing the perceived complexity while maintaining reliability

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS10438586B2Voice dialog device and voice dialog method
Publication Date: 2019.10.08 TOYOTA JIDOSHA KK
  • US10438586B2 patent drawing
  • US10438586B2 patent drawing
  • US10438586B2 patent drawing

AI summary

A voice dialog device, comprises a voice processing unit configured to obtain a voice pronounced by a user and a result of recognizing the voice; a plurality of estimation units configured to estimate emotion of the user by different methods; and a response unit configured to create a response sentence, based on results of estimating the emotion of the user, and provide the response sentence to the user, wherein when a discrepancy exists between the results of estimating the emotion of the user by the plurality of estimation units, the response unit makes an inquiry to the user, and determines which estimation result is to be adopted, based on content of an obtained response.