Sentence Structure Vectorization via Partial Graph Extraction

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Solution Overview

Problem

Existing sentence structure vectorization methods face challenges in efficiently representing the semantic structure of sentences, particularly due to the exponential increase in calculations required for vectorizing text structures as the size of dependency graphs grows, and fail to adequately express parallel structures.

Innovation Solution

A sentence structure vectorization device and method that performs morphological analysis and dependency parsing to generate a dependence structure graph, extracting partial structure information and converting it into a numerical sequence of vector values, where each vector value represents the number of appearances of morpheme structures, reducing the number of calculations by excluding non-existent dependency relationships and merging morpheme structures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If partial graphs are extracted from the dependency graph structure to express semantic structure, then the ability to represent sentence meaning is improved, but the number of calculations increases exponentially

Engineering Contradiction:
Improvesentence structure representation accuracyVSAvoidvectorization calculation efficiency
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The patent extracts only the essential partial graphs from the dependency graph structure that are necessary for representing sentence meaning, rather than processing all possible partial graphs. This selective extraction approach maintains semantic representation accuracy while avoiding exponential calculation growth.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent segments the dependency graph into manageable partial structures that can be processed independently. By dividing the complex graph into smaller, meaningful segments, the system can extract features efficiently without having to process the entire graph structure at once, thus reducing computational complexity.

Inventive Principle:
Principle #1Segmentation

2Loss of information

If dependency parsing is performed on the entire dependency graph structure, then complete sentence structure information is obtained, but computational complexity increases

Engineering Contradiction:
Improvesentence structure information completenessVSAvoidprocessing system complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent extracts only the necessary partial graph structures from the complete dependency graph that are relevant for sentence meaning representation. This selective extraction maintains information completeness for the intended purpose while reducing processing complexity by excluding unnecessary graph elements.

Inventive Principle:
Principle #2Taking out (Extraction)

3Measurement precision

If more partial graphs are extracted to improve vectorization accuracy, then sentence meaning representation is enhanced, but the number of calculations increases

Engineering Contradiction:
Improvevectorization accuracyVSAvoidprocessing speed
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The patent extracts only the essential partial graphs that contribute most to sentence meaning representation, rather than extracting all possible partial graphs. This selective approach maintains high vectorization accuracy while avoiding the exponential increase in calculations that would result from comprehensive extraction.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS11842152B2Sentence structure vectorization device, sentence structure vectorization method, and storage medium storing sentence structure vectorization program
Publication Date: 2023.12.12 MITSUBISHI ELECTRIC CORP
  • US11842152B2 patent drawing
  • US11842152B2 patent drawing
  • US11842152B2 patent drawing

AI summary

A sentence structure vectorization device includes processing circuitry to generate a plurality of morphemes by performing morphological analysis on an input sentence; to generate a dependence structure graph regarding the plurality of morphemes by performing dependency parsing on the plurality of morphemes; and to generate a sentence structure vector by extracting a plurality of pieces of partial structure information from the dependence structure graph and converting a morpheme string corresponding to the plurality of pieces of partial structure information into a numerical sequence.