Adaptive Related Expression Extraction via Dynamic Model Selection

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Solution Overview

Problem

In learning engineering and related systems, there is a challenge in providing effective and adaptive intellectual learning support that considers the state of individual learners, including their prerequisite knowledge, when extracting related expressions for information analysis tasks.

Innovation Solution

A related expression extraction device that selects appropriate assessment models based on the structural pattern of input text and the type or pattern of questions, taking into account the learner model or state of the searcher/questioner, to accurately extract related expressions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If deep learning-based assessment model is used, then analysis possibility and translation accuracy are improved, but data requirement and system complexity increase

Engineering Contradiction:
Improvetranslation accuracyVSAvoidsystem complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system dynamically selects between assessment model 1 (basic analysis) and assessment model 2 (deep learning) based on data availability and task requirements. When sufficient bilingual data is available, the more complex deep learning model is activated to achieve higher accuracy. When data is limited, the system switches to the simpler basic analysis model, thereby adapting system complexity to actual needs rather than maintaining fixed high complexity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the parameter of model selection based on data quantity thresholds and task characteristics. By adjusting which assessment model is active according to these parameters, the system achieves high accuracy when conditions permit while avoiding unnecessary complexity when they don't, effectively managing the trade-off between precision and complexity.

Inventive Principle:
Principle #35Parameter changes

2Ease of manufacture

If basic analysis method is used, then data requirement is reduced, but analysis capability and accuracy are limited

Engineering Contradiction:
Improvedata preparation easeVSAvoidanalysis accuracy
Core Design Contradiction:
Ease of manufactureVSMeasurement precision

Solution Approach 1:

The system dynamically adjusts its analysis capability based on available data. When data is scarce, it uses basic analysis methods that are easier to implement with minimal data. When sufficient data exists, it transitions to deep learning-based assessment that provides superior analysis accuracy, thus dynamically matching method complexity to data availability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The assessment system is segmented into two distinct models: assessment model 1 for basic analysis with low data requirements, and assessment model 2 for deep learning with high data requirements but superior accuracy. This segmentation allows the system to choose the appropriate level of analysis capability based on the specific task and data availability, rather than being constrained to a single fixed capability level.

Inventive Principle:
Principle #1Segmentation

3Device complexity

If single assessment model is used, then system complexity is reduced, but adaptability to different tasks and learner states is limited

Engineering Contradiction:
Improvemodel selection complexityVSAvoidtask adaptability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The system achieves multi-functionality by incorporating both assessment model 1 and assessment model 2, enabling it to handle diverse tasks effectively. Assessment model 1 serves basic analysis needs across various tasks, while assessment model 2 provides enhanced deep learning capabilities for tasks with sufficient data. This universal design allows the same system to adapt to different task requirements and data conditions without requiring task-specific customizations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system dynamically selects which assessment model to employ based on task characteristics and data availability. This dynamic model selection mechanism enables the system to adapt its complexity and capability level to match the specific demands of each task, achieving high versatility without permanently maintaining the complexity of the more sophisticated model for all operations.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12327083B2Related expression extraction device and related expression extraction method
Publication Date: 2025.06.10 HITACHI LTD
  • US12327083B2 patent drawing
  • US12327083B2 patent drawing
  • US12327083B2 patent drawing

AI summary

The present invention enables, according to a situation, accurate extraction of related expressions pertaining to search queries and question sentences. A related expression extraction device 1 receives input of text data, performs at least one of categorization of the received text data and determination of a structural pattern of the text data, determines, based on a result of at least one of the categorization of the text data and the determination of the structural pattern of the text data, which of a plurality of comparative assessment models 27 and 28 is used to extract related expression group data 26, and extracts a related expression related to content of the text data from the related expression group data 26 using the determined comparative assessment models 27 and 28.