Reply Candidate Display Switching for Accurate Interest Measurement
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Solution Overview
Problem
The accuracy of determining the interest of individuals who do not use the input unit in existing information presentation collection systems is low, as they are often misclassified due to variations in movement speed.
Innovation Solution
An information presentation collection system that includes a question display device, reply candidate display devices positioned differently across a passage, sensors to detect people, and processing circuitry to measure and count individuals selecting reply candidates, with periodic display switching to reduce the influence of non-respondents and enhance accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the system classifies no-reply people based on movement speed decrease, then it can identify people with interest in the question, but the accuracy of determination is low due to variations in movement speed
Solution Approach 1:
The system performs display switching of reply candidates at periodic intervals and conducts multiple measurements across different periods. By comparing results from multiple periodic measurement cycles, the system distinguishes between temporary movement speed variations and genuine lack of interest, thereby improving determination accuracy and reducing misclassification.
Solution Approach 2:
The system uses feedback from multiple measurement results and display switching cycles to refine its classification. By analyzing patterns across repeated measurements and comparing against threshold values, the system continuously improves its accuracy in determining whether non-responding individuals are truly uninterested versus merely moving at variable speeds.
2Productivity
If the system uses a single measurement of movement speed, then it can quickly classify people, but the accuracy is insufficient due to individual variations
Solution Approach 1:
The system performs preliminary display switching and multiple measurements before final classification. By pre-conducting several measurement cycles and storing results, the system prepares sufficient data in advance to make accurate determinations without sacrificing classification speed, as the measurements are already completed before the final decision is made.
Solution Approach 2:
The system performs more measurements than the minimum single measurement would require. By conducting multiple measurements across different display switching periods, the system obtains excessive data that exceeds the basic requirement, allowing it to filter out noise and variations while maintaining efficient processing through automated threshold-based classification.
Data Source
AI summary
An information presentation collection system includes a question display device, a reply candidate display device, a sensor to detect people moving in the passage, and processing circuitry to measure a number of the people moving in a direction towards the reply candidate display device. The processing circuitry repeatedly performs display switching of switching the display positions of the plurality of reply candidates to each other according to a predetermined schedule, counts a total number of people who selected each of the plurality of reply candidates in a plurality of information collection periods based on the number of the people measured in each information collection period from one of the display switchings to the next display switching, and outputs a value based on a ratio regarding a plurality of the total numbers as an evaluation value.