human-written text detector

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🌟 Inspiration The rise of AI-generated content has made it difficult to distinguish between human-written and machine-generated text. Inspired by plagiarism detection tools and the production-grade MNIST classification pipeline you’ve documented, the idea is to build a robust detector that can analyze linguistic signals, statistical features, and semantic coherence to flag AI-generated text.

⚙️ What It Does Accepts text input (essay, article, or snippet).

Runs preprocessing (tokenization, normalization).

Extracts statistical features (burstiness, perplexity, sentence length variance).

Uses a trained classifier (e.g., CNN/LSTM or transformer fine-tuned) to predict whether the text is human-written or AI-generated.

Returns a confidence score and probability distribution, similar to your MNIST API’s JSON response.

🛠️ How We Built It Data Pipeline: Collected datasets of human-written text (blogs, essays) and AI-generated text (GPT, Copilot outputs).

Preprocessing: Tokenization, stopword removal, normalization of sentence lengths.

Model Architecture: Adapted ideas from your MNIST CNN pipeline:

Embedding layer for words.

Convolutional + recurrent layers to capture local and sequential patterns.

Dropout + BatchNorm for regularization.

Softmax output for binary classification (Human vs AI).

Backend: Flask REST API similar to your MNIST project, with endpoints:

POST /api/detect → returns prediction and confidence.

GET /api/health → confirms model is loaded.

Frontend: Simple SPA with text input box and real-time confidence visualization.

🚧 Challenges We Ran Into Data imbalance: Human-written text is diverse, while AI text is often formulaic. Needed careful augmentation.

Short text detection: Harder to classify tweets or one-liners.

Evolving AI models: Detectors must adapt as generative models improve.

False positives: Polished human text sometimes looks “too perfect” and gets flagged.

🏆 Accomplishments We’re Proud Of Achieved >90% accuracy on validation sets.

Designed a modular pipeline inspired by your MNIST architecture (clear separation of training vs inference).

Built a clean REST API with robust error handling.

Integrated automated PyTest cases for regression testing.

📚 What We Learned Statistical signals like burstiness and perplexity are powerful but not sufficient alone.

Combining deep learning with handcrafted linguistic features improves robustness.

Production-grade deployment requires strict separation of training and inference pipelines, just like your MNIST classifier.

🚀 What’s Next Expand dataset with newer AI models (GPT-4, Claude, Copilot outputs).

Add explainability: highlight which sentences triggered “AI-like” classification.

Deploy at scale with WSGI servers (Gunicorn/Waitress).

Integrate into plagiarism detection workflows for universities and publishers.

Continuous retraining pipeline to keep up with evolving AI text styles.

Built With

• cnn
• css
• fastapi
• flask
• html
• java
• javascript
• keras
• machine-learning
• nosql
• pytest
• python
• pytorch
• spacy
• sql
• tensorflow