| title: CalcTrainer Annotator | |
| emoji: 📝 | |
| colorFrom: blue | |
| colorTo: purple | |
| sdk: gradio | |
| sdk_version: 5.34.2 | |
| app_file: app.py | |
| pinned: false | |
| license: mit | |
| short_description: Annotation tool for CalcTrainer handwriting dataset | |
| dataset_info: | |
| features: | |
| - name: question_id | |
| dtype: string | |
| - name: handwriting_image | |
| dtype: image | |
| - name: math_problem | |
| dtype: string | |
| - name: correct_answer | |
| dtype: int64 | |
| - name: ocr_prediction | |
| dtype: string | |
| - name: ocr_parsed_number | |
| dtype: int64 | |
| - name: is_ocr_likely_correct | |
| dtype: bool | |
| - name: human_label | |
| dtype: string | |
| - name: was_corrected | |
| dtype: bool | |
| - name: annotation_status | |
| dtype: string | |
| splits: | |
| - name: train | |
| num_bytes: 4183724.125 | |
| num_examples: 1447 | |
| download_size: 4269963 | |
| dataset_size: 4183724.125 | |
| configs: | |
| - config_name: default | |
| data_files: | |
| - split: train | |
| path: data/train-* | |
| # CalcTrainer Annotator 📝 | |
| **Annotation tool for validating OCR predictions on handwritten math answers from [CalcTrainer](https://huggingface.co/spaces/hoololi/CalcTrainer)** | |
| ## How to Use | |
| 1. **Review** the math problem and handwritten answer | |
| 2. **Validate or correct** the OCR suggestion: | |
| - **✅ Correct** → Validates and moves to next | |
| - **❌ Incorrect** → Type correct number and validate | |
| 3. **Export** annotations anytime to save progress | |
| ## Features | |
| - **Smart filtering**: Only shows unannotated entries | |
| - **OCR suggestions**: Pre-filled predictions with error warnings | |
| - **Incremental export**: Safely add annotations without data loss | |
| - **Progress tracking**: Real-time statistics | |
| ## Data Flow | |
| ``` | |
| CalcTrainer → Raw Dataset → Manual Annotation → Validated Dataset | |
| ``` | |
| ## Output | |
| Creates `hoololi/CalcTrainer_dataset_annotated` with human-validated labels for OCR model fine-tuning. | |
| **Private Space** - Controlled access for annotation quality. |