Dynamic Portmanteau Identification in QA Systems

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Solution Overview

Problem

Question answering (QA) systems face difficulties in processing newly formed portmanteaus due to their absence in the system's dictionary, leading to inaccurate understanding and response generation, as these words often lack established meanings.

Innovation Solution

The approach identifies potential morphemes and phonemes within portmanteaus, derives their meanings by combining candidate words, and updates the QA system's dictionary dynamically, using string metrics like Levenshtein distance to determine the most likely meaning based on context.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the QA system uses a static dictionary for word recognition, then the system structure remains simple, but the system cannot accurately process newly formed portmanteaus that are not in the dictionary

Engineering Contradiction:
Improveaccuracy in processing portmanteausVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent transforms the static dictionary into a dynamic system that can automatically adapt to new portmanteaus. The system continuously learns from document corpora, identifies potential portmanteaus using morpheme analysis, and updates its knowledge base in real-time, allowing it to process newly formed words without manual intervention while maintaining manageable complexity through automated processes

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The QA system performs self-updating by automatically detecting, analyzing, and incorporating new portmanteaus into its dictionary without external assistance. The system uses its own resources (document corpora, morpheme databases, string metric algorithms) to identify and process new words, making the complexity management self-sufficient

Inventive Principle:
Principle #25Self-service

2Reliability

If the QA system manually updates the dictionary to include new portmanteaus, then the accuracy improves, but the time and resources required for maintenance increase

Engineering Contradiction:
Improveaccuracy in word recognitionVSAvoidtime for dictionary updates
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary automated analysis of potential portmanteaus by breaking them down into morphemes and comparing against known word databases before full integration. This preliminary filtering using string metrics and morpheme matching prepares candidate words in advance, reducing the time and resources needed for final dictionary updates by pre-identifying and validating potential new entries

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements continuous feedback loops where the QA system monitors its own performance, identifies unrecognized portmanteaus in query processing, and triggers automatic dictionary updates. This feedback mechanism ensures the dictionary remains current without manual intervention, maintaining high accuracy while minimizing time investment through automated closed-loop control

Inventive Principle:
Principle #23Feedback

3Measurement precision

If the QA system processes all possible candidate words for portmanteau decomposition, then the accuracy of meaning derivation improves, but the computational complexity increases

Engineering Contradiction:
Improveprecision in meaning derivationVSAvoidcomputational complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system segments the portmanteau analysis process into distinct stages: morpheme extraction, candidate word generation, string metric comparison, and meaning derivation. By dividing the complex task of processing all candidate words into manageable segments with clear entry and exit criteria, the system maintains high precision in meaning derivation while controlling computational complexity through structured modular processing

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system applies different levels of analysis depth to different parts of the portmanteau processing pipeline. High-precision morpheme matching and string metric calculations are applied only to candidate words that pass initial filtering thresholds, while less rigorous methods are used for preliminary screening. This local differentiation of quality levels maintains accuracy where needed while reducing overall computational complexity

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS10108602B2Dynamic portmanteau word semantic identification
Publication Date: 2018.10.23 INTERNATIONAL BUSINESS MACHINE CORPORATION
  • US10108602B2 patent drawing
  • US10108602B2 patent drawing
  • US10108602B2 patent drawing

AI summary

An approach is provided to discover new portmanteau, such as when ingesting documents into a question answering (QA) system. The approach works by analyzing a words included in electronic documents and identifies words as being possible portmanteaus. To analyze a portmanteau found in a document, the approach identifies morphemes that are included in the identified portmanteau and candidate words that correspond to each of the identified morphemes. A meaning for the new portmanteau is then derived from the meanings of the candidate word meanings.