Multi-Stage Text Styling for Fluent Authorship Obfuscation

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Solution Overview

Problem

Existing authorship obfuscation methods typically rely on a single technique, which may not effectively mask the authorship across diverse writing styles, and fail to maintain stylistic consistency and fluency in transformed text.

Innovation Solution

A system and method utilizing a processing pipeline that applies multiple styling techniques, including large language models, machine translation, and style transfer, combined with homographic attacks, to generate output text that is stylistically distinct from the input while maintaining fluency and preserving meaning, using metrics to optimize the transformation process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single styling technique is used for authorship obfuscation, then the transformation process is simple, but the obfuscation effectiveness is insufficient across diverse writing styles

Engineering Contradiction:
Improveobfuscation effectivenessVSAvoidtransformation process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the authorship obfuscation process into multiple independent styling techniques (e.g., synonym replacement, sentence restructuring, passive voice conversion) that can be applied separately and combined. Each technique targets specific linguistic features, allowing the system to achieve comprehensive obfuscation across diverse writing styles without requiring a single complex transformation method.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent combines multiple styling techniques into a composite transformation pipeline, where each technique contributes different obfuscation capabilities. This composite approach integrates the strengths of various styling methods (lexical, syntactic, structural transformations) to create a robust obfuscation system that maintains effectiveness across different authoring styles while managing complexity through modular design.

Inventive Principle:
Principle #40Composite materials

2Reliability

If multiple styling techniques are applied to mask authorship, then obfuscation effectiveness improves, but maintaining stylistic consistency and fluency becomes more difficult

Engineering Contradiction:
Improveauthorship masking effectivenessVSAvoidstylistic consistency maintenance
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent implements dynamic styling technique selection that adapts to the input text's characteristics. The system analyzes the original writing style and selectively applies styling techniques that preserve the essential stylistic features while achieving obfuscation. This dynamic approach ensures that the transformed text maintains fluency and stylistic consistency even when multiple techniques are applied, as the system adjusts the intensity and combination of techniques based on the specific text being processed.

Inventive Principle:
Principle #15Dynamics

3Reliability

If styling techniques transform the text to a different style, then authorship is obfuscated, but the text may lose fluency and naturalness

Engineering Contradiction:
Improveauthorship obfuscationVSAvoidtext fluency
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent applies styling techniques partially rather than uniformly across all text elements. The system selectively applies transformations to specific linguistic features (e.g., replacing only certain types of sentences, applying synonym replacement at controlled rates) to achieve sufficient obfuscation while preserving overall text fluency. This partial application prevents over-transformation that would make the text sound unnatural, balancing obfuscation effectiveness with readability.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS20250335692A1Method and system for authorship obfuscation
Publication Date: 2025.10.30 RTX BBN TECH INC
  • US20250335692A1 patent drawing
  • US20250335692A1 patent drawing
  • US20250335692A1 patent drawing

AI summary

A method includes processing, by a system, input text, by applying a styling technique to at least a portion of the input text. Applying the styling technique generates intermediate output text of a style different from a style of the input text. The styling technique is selected based on one or more metrics associated with generating the intermediate output text. The method includes processing, by the system, the intermediate output text, wherein processing the intermediate output text includes generating output text different from the input text and the intermediate output text. Generating the output text includes applying homographic attacks to the intermediate output text.