Text Moderation via Word Embedding Clustering

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Solution Overview

Problem

Existing network-accessible platforms face challenges in effectively moderating user-generated content, particularly toxic language and hate speech, as human moderators struggle with large user communities and automated systems can be circumvented by creative users.

Innovation Solution

A remote computing system uses a machine learning approach based on word embeddings to classify and moderate text, allowing for dynamic adaptation to changing user behavior and detection of creative misspellings or symbol substitutions, with customizable moderation options for individual users.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If human moderators manually review user-generated content, then content quality can be assessed, but the system becomes inescaliably complex and cannot scale with large user communities

Engineering Contradiction:
Improvecontent moderation effectivenessVSAvoidmoderation system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces manual human moderation with an automated machine learning-based text classification system. The system uses neural networks to automatically analyze user-generated content, classify it into categories (including toxic language, hate speech, and appropriate content), and make moderation decisions without human intervention, thereby reducing system complexity while maintaining effectiveness.

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

Solution Approach 2:

The system employs self-learning mechanisms where the machine learning model continuously improves by analyzing patterns in user-generated content and automatically updating its classification criteria. The system can adapt to new forms of inappropriate content without requiring retraining by human moderators, enabling it to serve itself in the moderation process.

Inventive Principle:
Principle #25Self-service

2Productivity

If automated detection systems are used to censor inappropriate content, then moderation speed increases, but creative users can circumvent detection through misspellings and symbol substitutions

Engineering Contradiction:
Improvemoderation speedVSAvoiddetection accuracy
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent changes the detection parameters from traditional keyword matching to semantic understanding through machine learning. The system analyzes the contextual meaning, sentiment, and patterns of text rather than relying on exact word matches, allowing it to detect inappropriate content even when users employ creative misspellings, symbol substitutions, or obfuscation techniques.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system incorporates feedback mechanisms where classified content is reviewed and labeled, and this information is used to retrain and improve the machine learning model. This continuous feedback loop enables the system to adapt to evolving circumvention strategies and maintain high detection accuracy against creative user behavior.

Inventive Principle:
Principle #23Feedback

3Ease of operation

If strict content moderation is applied, then user experience for appropriate content consumers improves, but legitimate user expression may be unfairly restricted

Engineering Contradiction:
Improveuser experience qualityVSAvoidcontent freedom
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The patent applies different moderation standards to different types of content and contexts. The machine learning system analyzes the specific context, tone, and category of each piece of content before applying moderation rules, allowing nuanced differentiation between harmful content and legitimate expression. This localized approach ensures that moderation is applied selectively rather than uniformly.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system dynamically adjusts its moderation thresholds and classification criteria based on contextual analysis and feedback. Rather than using fixed, rigid rules, the machine learning model adapts its decision-making in real-time based on the specific characteristics of the content and user interactions, allowing flexibility to accommodate legitimate expression while maintaining protection against harmful content.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11698922B2Classification and moderation of text
Publication Date: 2023.07.11 VALVE CORPORATION
  • US11698922B2 patent drawing
  • US11698922B2 patent drawing
  • US11698922B2 patent drawing

AI summary

Disclosed herein are techniques and systems for classifying and moderating text using a machine learning approach that is based on a word embedding process. For instance, word embedding vectors may be used to determine clusters of associated text (e.g., similar words) from a corpus of comments maintained by a remote computing system. The remote computing system may then identify, within the corpus of comments, a subset of comments that include text from a given cluster that was determined, from human labeling input, to include a particular type of word or speech. Using this information, the corpus of comments may be labeled with one of multiple class labels. A machine learning model(s) may be trained to classify text as one of the multiple class labels using a sampled set of labeled comments as training data. At runtime, text can be moderated based on its class label.