Intention Detection Using Unsupervised Motion Pattern Learning

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Solution Overview

Problem

Existing intention detection systems require high-quality intention knowledge bases or supervised learning, which can be burdensome for users to prepare and maintain.

Innovation Solution

An intention detection device and method that processes detection signals from sensors to generate preprocessed data, identify motion patterns and object relations, and detect activities, gestures, or predicted steps using unsupervised or semi-supervised learning, integrating lexical descriptions without the need for preconfigured knowledge bases.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If high-quality intention knowledge base or supervised learning is used to detect human intention, then detection accuracy is improved, but user burden and system complexity increase

Engineering Contradiction:
Improveintention detection accuracyVSAvoidknowledge base preparation complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system performs self-learning by automatically acquiring motion patterns and object relations from sensor data without requiring manual preparation of knowledge bases. The learning unit enables the system to improve its own intention detection capabilities through unsupervised or semi-supervised learning from real-world interactions, eliminating the burden of supervised learning and manual knowledge base curation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces the traditional mechanical approach of manually constructing and maintaining knowledge bases with an automated learning system. Instead of manually encoding intention knowledge, the system uses machine learning algorithms to automatically extract motion patterns, object relations, and intention rules from sensor data, substituting manual intellectual labor with automated computational processes.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If traditional intention detection systems are implemented, then intention can be detected, but the system requires preconfigured knowledge bases that are difficult to maintain

Engineering Contradiction:
Improveintention detection capabilityVSAvoidknowledge base maintenance ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system transitions from static, preconfigured knowledge bases to dynamic, adaptive learning. The learning unit continuously updates motion patterns, object relations, and intention rules based on new sensor data, allowing the system to adapt to changing environments and user behaviors without manual intervention. This dynamic approach maintains reliable intention detection while eliminating maintenance burdens.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system automatically maintains and updates its own knowledge through the learning unit, which continuously processes sensor data to refine motion patterns, object relations, and intention detection rules. This self-maintenance capability eliminates the need for manual knowledge base updates while preserving reliable intention detection performance.

Inventive Principle:
Principle #25Self-service

3Measurement precision

If supervised learning is used for intention detection, then detection accuracy improves, but the time and resources required for training increase

Engineering Contradiction:
Improveintention detection accuracyVSAvoidtraining time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The system performs preliminary unsupervised learning to automatically acquire motion patterns and object relations from sensor data before intention detection is needed. This preliminary action builds a foundation of learned knowledge that enables accurate supervised learning later, reducing the time and resources required for training by pre-processing and organizing data in meaningful structures.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces time-consuming manual supervised learning with automated unsupervised and semi-supervised learning algorithms. The learning unit automatically extracts features, clusters data, and discovers patterns without human intervention, substituting the manual labeling and training process with automated computational methods that require minimal time and resources.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20230230354A1Intention detection device, intention detection method computer-readable storage medium
Publication Date: 2023.07.20 NEC CORP
  • US20230230354A1 patent drawing
  • US20230230354A1 patent drawing
  • US20230230354A1 patent drawing

AI summary

An intention detection device 1X includes a preprocessor 21X, a motion pattern/object relation identifier 22X and a detector 23X. The preprocessor 21X is configured to generate preprocessed data associated with a human and a relevant object by processing a detection signal outputted by a sensor. The motion pattern/object relation identifier 22X is configured to identify a motion pattern of the human and a relation between the human and the object based on the preprocessed data. The detector 23X is configured to detect at least one of an activity, a gesture or a predicted step regarding the human based on the identified motion pattern and the identified relation able to integrate and provide lexical descriptions of the at least one of the activity, the gesture or the predicted step.