GEOHARM: Hate Speech Detection System
Deterministic Multimodal Geometric Framework for Hate Speech Detection.
GEOHARM is a non-ML, non-DL deterministic framework based on Convex Hull and Computational Geometry. It accepts text, image, and audio inputs, transforms each into deterministic numerical/geometric descriptors, and uses robust convex regions to classify hate speech. Built for resource-constrained environments, it provides explainable geometric decisions with low computational cost.
87.6%
Detection Accuracy
Text + Image + Audio
Modalities
< 50 ms
Inference Time
Yes
CPU Only
Multimodal Geometric Framework Architecture
From raw input to geometric decision — a complete deterministic pipeline based on Convex Hull and Computational Geometry.
Deterministic Feature Extraction
Lexical, structural, visual, and acoustic features without ML/DL
Geometric Space Construction
Low-dimensional feature spaces for text, image, and audio
Convex Hull & Decision Engine
Hate Hull, Safe Hull, category-specific hulls, and geometric fusion
Deterministic Geometric Framework
Deterministic Text Features
Lexical (offensive density, target-group density), structural (punctuation, capitalization), and statistical (entropy, diversity) features.
Deterministic Image Features
Color entropy, edge density, texture statistics, OCR word count, and text density from embedded text.
Deterministic Audio Features
RMS energy, pitch statistics, spectral centroid, spectral flux, speech activity ratio, and MFCC statistics.
Convex Hull Classification
Hate Hull, Safe Hull, and category-specific hulls (racial, religious, gender, political, threatening, dehumanizing).
Multimodal Geometric Fusion
Geometric fusion of text, image, and audio evidence with cross-modal agreement analysis.
Explainable AI (XAI)
Visualizes geometric boundaries, input points, distances, modality contributions, and final geometric decision.
Core Technologies
A complete geometric framework using Convex Hull for deterministic hate speech detection across multiple modalities.
Key Features
- Convex Hull (SciPy spatial.ConvexHull / QuickHull)
- Deterministic feature engineering without ML/DL
- Category-specific geometric regions
- Outlier-resistant hull strategies
Specifications
Hull Types
Hate Hull, Safe Hull, Category Hulls
Modalities
Text + Image + Audio
Geometric Intelligence Engine
A complete deterministic pipeline from raw input to geometric decision using Convex Hull and Computational Geometry.
Deterministic Text Feature Engine
Extracts lexical, structural, and statistical features from text without ML/DL. Features: offensive density, target-group density, entropy, lexical diversity, punctuation density.
Deterministic Visual Feature Engine
Extracts color, edge, texture, and OCR features from images without ML/DL. Features: color entropy, edge density, texture statistics, OCR word count, text density.
Deterministic Acoustic Feature Engine
Extracts RMS energy, pitch, spectral, and speech features from audio without ML/DL. Features: RMS energy, pitch statistics, spectral centroid, speech activity ratio.
Convex Hull Generator
Constructs Hate Hull, Safe Hull, and category-specific hulls (racial, religious, gender, political, threatening, dehumanizing) from training data.
Multimodal Geometric Fusion
Fuses text, image, and audio evidence geometrically. Calculates modality agreement and identifies which modality drives the decision.
Explainability & Visualization
Visualizes geometric boundaries, input points, distances, modality contributions, and final decision with interactive plots.
Technical Specifications
Applications & Target Audience
The GEOHARM Advantage
Novel Technology & Features
Deterministic Multimodal Geometry
First computational geometry framework for multimodal hate speech detection. Non-ML, non-DL, fully deterministic.
Geometric Explainability
Visualizes hull boundaries, input points, and distances. Explains why a sample is classified as hate/non-hate geometrically.
Low Computational Cost
Designed for CPU-only inference with < 50 ms latency. No GPU, no large models, minimal dependencies.
Visual Reference
GEOHARM Geometric Framework Dashboard
Convex Hull Visualization & Decision
Multimodal Geometric Fusion Analysis