Layered Data Editing for Learning Support Systems
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Solution Overview
Problem
Conventional learning support systems face challenges in preventing unintentional editing of student-generated content, particularly when teachers are allowed to edit student answers, risking accidental erasure of handwritten content.
Innovation Solution
An information processing device that manages target data by selecting an editing mode based on the editing stage and user attributes, allowing editing only on specific layers to prevent unintended changes, such as using 'creation mode' for students and 'correction mode' for teachers, ensuring that original content and corrections are preserved.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the teacher is allowed to perform all kinds of edits including modification and deletion on data of the answer created by the student, then the teacher can specify correction target positions and add comments and marks, but there is a risk that the teacher might accidentally erase the content that the student had written
Solution Approach 1:
The patent divides the answer data into multiple layers: a first layer for student-generated content and a second layer for teacher corrections. This segmentation allows teachers to edit only the second layer without affecting the first layer, preventing accidental erasure of student work while maintaining full editing capability for corrections.
Solution Approach 2:
Different layers of the data structure have different editing permissions and properties. The first layer (student content) has protection against deletion and modification, while the second layer (teacher corrections) allows full editing operations. This local differentiation of data properties enables safe simultaneous editing by multiple users.
2Ease of operation
If the teacher writes correction contents in the same area as the student's answers, then the teacher can specify correction target positions, but it becomes difficult to recognize the correction target position
Solution Approach 1:
The patent introduces a new dimension of organization by separating correction data into a distinct second layer that is visually and structurally differentiated from the first layer. This dimensional separation allows correction target positions to be clearly identified through layer boundaries and visual distinctions, making corrections easily recognizable while maintaining precise specification capability.
3Adaptability or versatility
If multiple users edit a single target data, then the system enables collaborative learning support, but it creates risk of unintentional editing and loss of original content
Solution Approach 1:
The patent segments the data into multiple layers with different access rights and protection levels. The first layer contains student-generated content that is protected from accidental deletion and modification by teachers, while the second layer allows teacher corrections. This segmentation enables collaborative editing while preserving original content through layer isolation.
Solution Approach 2:
The system establishes the layered data structure in advance, pre-defining which layers can be edited by which users. This preliminary organization prevents unintentional editing before it occurs, ensuring that teachers can only modify the second layer and cannot accidentally erase first layer content, thus preventing information loss proactively.
Data Source
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Figure 4A~4B
AI summary
An information processing device that manages target data able to be shared and edited by a plurality of users, includes a controller that selects an editing mode according to which of a plurality of editing stages the target data is in, when the target data is edited step by step by the plurality of users, and that decides editing conditions of the target data according to the selected editing mode.