Multilingual Semantic Search via Meta-Distillation Learning

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Solution Overview

Problem

Conventional semantic search systems lack flexibility and efficiency, particularly in providing multilingual search results and require large training datasets and careful fine-tuning.

Innovation Solution

A multilingual meta-distillation system utilizing model-agnostic meta-learning (MAML) and knowledge distillation to train a deep learning language model for multilingual semantic search, enabling efficient transfer from monolingual to bilingual and then to multilingual search tasks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional semantic search systems are used, then contextual meaning identification is achieved, but flexibility and efficiency are insufficient

Engineering Contradiction:
ImproveflexibilityVSAvoidefficiency
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

The system performs preliminary action by pre-training the student model on monolingual data and then using knowledge distillation to transfer multilingual capabilities. This preliminary preparation allows the model to efficiently handle multilingual search tasks without requiring extensive fine-tuning for each language, thereby improving both flexibility and efficiency.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The student model acts as an intermediary between the teacher model and the actual search application. Through knowledge distillation, the student model captures the multilingual semantic understanding capabilities of the teacher model and applies them efficiently in production, resolving the contradiction between flexibility and efficiency.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If large training datasets are used for fine-tuning, then model accuracy is improved, but training time and computational resources increase

Engineering Contradiction:
ImproveaccuracyVSAvoidtraining time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The system uses knowledge distillation to copy the learned representations and capabilities from the teacher model to the student model. This copying mechanism allows the student model to achieve high accuracy without requiring extensive training data and computational resources, significantly reducing training time while maintaining performance.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The teacher model performs preliminary learning on comprehensive multilingual data, and its knowledge is then transferred to the student model. This preliminary action eliminates the need for the student model to relearn from scratch, reducing training time and computational requirements while preserving accuracy.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If the system transfers from monolingual to multilingual search, then language versatility is improved, but model complexity increases

Engineering Contradiction:
Improvelanguage versatilityVSAvoidmodel complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The student model is designed with universality to handle multiple languages through knowledge distillation from the teacher model. By learning multilingual representations during the distillation process, the model achieves language versatility without requiring separate models for each language, thereby managing complexity while improving adaptability.

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

Data Source

PatentUS12547901B2Multilingual semantic search utilizing meta-distillation learning
Publication Date: 2026.02.10 ADOBE INC
  • US12547901B2 patent drawing
  • US12547901B2 patent drawing
  • US12547901B2 patent drawing

AI summary

The present disclosure relates to systems, non-transitory computer-readable media, and methods for providing multilingual semantic search results utilizing meta-learning and knowledge distillation. For example, in some implementations, the disclosed systems perform a first inner learning loop for a monolingual to bilingual meta-learning task for a teacher model. Additionally, in some implementations, the disclosed systems perform a second inner learning loop for a bilingual to multilingual meta-learning task for a student model. In some embodiments, the disclosed systems perform knowledge distillation based on the first inner learning loop for the monolingual to bilingual meta-learning task and the second inner learning loop for the bilingual to multilingual meta-learning task. Moreover, in some embodiments, the disclosed systems perform an outer learning loop and update parameters of a deep learning language model based on the first inner learning loop, the second inner learning loop, and the knowledge distillation.