leczhang/hw1-hc3-detector

HC3 AI-Generated Text Detector

A binary classifier for distinguishing human-written and ChatGPT-generated answers on the HC3 dataset.

Model

• Base model: sentence-transformers/all-MiniLM-L6-v2

Results

Approach	Test Accuracy
Baseline: Frozen MiniLM embeddings + Logistic Regression	0.8449
Fine-tuned model: MiniLM end-to-end fine-tuning	0.9959

Usage

from transformers import AutoTokenizer, AutoModelForSequenceClassification

repo_id = "leczhang/hw1-hc3-detector"

tokenizer = AutoTokenizer.from_pretrained(repo_id)
model = AutoModelForSequenceClassification.from_pretrained(repo_id)