In-Vehicle Service Evaluation Using Instant Message Segmentation

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Solution Overview

Problem

There is a need to effectively evaluate the service provided in vehicles, as existing techniques lack a systematic method to assess user experiences and feedback during vehicle usage.

Innovation Solution

An information processing device that selects and analyzes instant messages based on pick-up and drop-off times to determine the evaluation of the service provided in vehicles, using natural language processing to identify favorable or unfavorable impressions about the driver and cabin environment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If all instant messages are collected for service evaluation, then comprehensive feedback is obtained, but data processing complexity and time consumption increase

Engineering Contradiction:

Improveservice evaluation accuracyVSAvoiddata processing complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the continuous stream of instant messages by dividing them into discrete evaluation candidates based on temporal boundaries (pick-up time and drop-off time). This segmentation allows the system to process only relevant messages within specific time windows rather than analyzing all messages, thereby reducing processing complexity while maintaining evaluation accuracy.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent extracts only the necessary instant messages that fall within the pick-up and drop-off time periods for service evaluation. By taking out and selecting only the relevant messages from the complete message set, the system avoids processing unnecessary data, reducing computational complexity while preserving the accuracy needed for effective service evaluation.

Inventive Principle:

Principle #2Taking out (Extraction)

2Productivity

If instant messages are filtered by time period, then relevant feedback is identified, but some useful information may be excluded

Engineering Contradiction:

Improveevaluation efficiencyVSAvoidfeedback information loss

Core Design Contradiction:

ProductivityVSLoss of information

Solution Approach 1:

The patent applies preliminary action by pre-defining the evaluation time period based on pick-up and drop-off times before message filtering occurs. This preliminary temporal framework ensures that all potentially relevant feedback is captured within the appropriate time window, preventing information loss while maintaining high evaluation efficiency through targeted processing.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11557203B2Information processing device, non-transitory storage medium, and evaluation method

Publication Date: 2023.01.17 TOYOTA JIDOSHA KK

AI summary

An information processing device includes a communication unit and a control unit. The control unit selects at least one instant message as a selected message from one or more instant messages transmitted and received between terminal devices including a first terminal device. The control unit selects the selected message based on at least one of pick-up time and drop-off time of a vehicle picking up and dropping off a first user of the first terminal device. The control unit determines evaluation of a service provided in the vehicle based on the selected message.