Token Classification
Transformers
Safetensors
PyTorch
German
modernbert
ner
pii
pii-detection
de-identification
privacy
healthcare
medical
clinical
phi
german
openmed
Eval Results (legacy)
Instructions to use OpenMed/OpenMed-PII-German-GTEMed-Base-149M-v1 with libraries, inference providers, notebooks, and local apps. Follow these links to get started.
- Libraries
- Transformers
How to use OpenMed/OpenMed-PII-German-GTEMed-Base-149M-v1 with Transformers:
# Use a pipeline as a high-level helper from transformers import pipeline pipe = pipeline("token-classification", model="OpenMed/OpenMed-PII-German-GTEMed-Base-149M-v1")# Load model directly from transformers import AutoTokenizer, AutoModelForTokenClassification tokenizer = AutoTokenizer.from_pretrained("OpenMed/OpenMed-PII-German-GTEMed-Base-149M-v1") model = AutoModelForTokenClassification.from_pretrained("OpenMed/OpenMed-PII-German-GTEMed-Base-149M-v1") - Notebooks
- Google Colab
- Kaggle
metadata
language:
- de
license: apache-2.0
base_model: Alibaba-NLP/gte-modernbert-base
tags:
- token-classification
- ner
- pii
- pii-detection
- de-identification
- privacy
- healthcare
- medical
- clinical
- phi
- german
- pytorch
- transformers
- openmed
pipeline_tag: token-classification
library_name: transformers
metrics:
- f1
- precision
- recall
model-index:
- name: OpenMed-PII-German-GTEMed-Base-149M-v1
results:
- task:
type: token-classification
name: Named Entity Recognition
dataset:
name: AI4Privacy (German subset)
type: ai4privacy/pii-masking-400k
split: test
metrics:
- type: f1
value: 0.9597
name: F1 (micro)
- type: precision
value: 0.9573
name: Precision
- type: recall
value: 0.9621
name: Recall
widget:
- text: >-
Dr. Hans Müller (Sozialversicherungsnummer: 12 150385 M 123) ist
erreichbar unter hans.mueller@krankenhaus.de oder 0171 234 5678. Er wohnt
in der Hauptstraße 42, 10115 Berlin.
example_title: Clinical Note with PII (German)
OpenMed-PII-German-GTEMed-Base-149M-v1
German PII Detection Model | 149M Parameters | Open Source
Model Description
OpenMed-PII-German-GTEMed-Base-149M-v1 is a transformer-based token classification model fine-tuned for Personally Identifiable Information (PII) detection in German text. This model identifies and classifies 54 types of sensitive information including names, addresses, social security numbers, medical record numbers, and more.
Key Features
- German-Optimized: Specifically trained on German text for optimal performance
- High Accuracy: Achieves strong F1 scores across diverse PII categories
- Comprehensive Coverage: Detects 55+ entity types spanning personal, financial, medical, and contact information
- Privacy-Focused: Designed for de-identification and compliance with GDPR and other privacy regulations
- Production-Ready: Optimized for real-world text processing pipelines
Performance
Evaluated on the German subset of AI4Privacy dataset:
| Metric | Score |
|---|---|
| Micro F1 | 0.9597 |
| Precision | 0.9573 |
| Recall | 0.9621 |
| Macro F1 | 0.9488 |
| Weighted F1 | 0.9595 |
| Accuracy | 0.9938 |
Top 10 German PII Models
| Rank | Model | F1 | Precision | Recall |
|---|---|---|---|---|
| 1 | OpenMed-PII-German-SuperClinical-Large-434M-v1 | 0.9761 | 0.9744 | 0.9778 |
| 2 | OpenMed-PII-German-SnowflakeMed-Large-568M-v1 | 0.9724 | 0.9705 | 0.9743 |
| 3 | OpenMed-PII-German-ClinicalBGE-568M-v1 | 0.9724 | 0.9702 | 0.9745 |
| 4 | OpenMed-PII-German-BigMed-Large-560M-v1 | 0.9714 | 0.9696 | 0.9732 |
| 5 | OpenMed-PII-German-NomicMed-Large-395M-v1 | 0.9713 | 0.9690 | 0.9735 |
| 6 | OpenMed-PII-German-SuperMedical-Large-355M-v1 | 0.9701 | 0.9684 | 0.9719 |
| 7 | OpenMed-PII-German-EuroMed-210M-v1 | 0.9683 | 0.9667 | 0.9699 |
| 8 | OpenMed-PII-German-ClinicalBGE-Large-335M-v1 | 0.9652 | 0.9624 | 0.9680 |
| 9 | OpenMed-PII-German-ClinicalE5-Large-335M-v1 | 0.9646 | 0.9620 | 0.9672 |
| 10 | OpenMed-PII-German-BiomedELECTRA-Large-335M-v1 | 0.9638 | 0.9598 | 0.9677 |
Supported Entity Types
This model detects 54 PII entity types organized into categories:
Identifiers (22 types)
| Entity | Description |
|---|---|
ACCOUNTNAME |
Accountname |
BANKACCOUNT |
Bankaccount |
BIC |
Bic |
BITCOINADDRESS |
Bitcoinaddress |
CREDITCARD |
Creditcard |
CREDITCARDISSUER |
Creditcardissuer |
CVV |
Cvv |
ETHEREUMADDRESS |
Ethereumaddress |
IBAN |
Iban |
IMEI |
Imei |
| ... | and 12 more |
Personal Info (11 types)
| Entity | Description |
|---|---|
AGE |
Age |
DATEOFBIRTH |
Dateofbirth |
EYECOLOR |
Eyecolor |
FIRSTNAME |
Firstname |
GENDER |
Gender |
HEIGHT |
Height |
LASTNAME |
Lastname |
MIDDLENAME |
Middlename |
OCCUPATION |
Occupation |
PREFIX |
Prefix |
| ... | and 1 more |
Contact Info (2 types)
| Entity | Description |
|---|---|
EMAIL |
|
PHONE |
Phone |
Location (9 types)
| Entity | Description |
|---|---|
BUILDINGNUMBER |
Buildingnumber |
CITY |
City |
COUNTY |
County |
GPSCOORDINATES |
Gpscoordinates |
ORDINALDIRECTION |
Ordinaldirection |
SECONDARYADDRESS |
Secondaryaddress |
STATE |
State |
STREET |
Street |
ZIPCODE |
Zipcode |
Organization (3 types)
| Entity | Description |
|---|---|
JOBDEPARTMENT |
Jobdepartment |
JOBTITLE |
Jobtitle |
ORGANIZATION |
Organization |
Financial (5 types)
| Entity | Description |
|---|---|
AMOUNT |
Amount |
CURRENCY |
Currency |
CURRENCYCODE |
Currencycode |
CURRENCYNAME |
Currencyname |
CURRENCYSYMBOL |
Currencysymbol |
Temporal (2 types)
| Entity | Description |
|---|---|
DATE |
Date |
TIME |
Time |
Usage
Quick Start
from transformers import pipeline
# Load the PII detection pipeline
ner = pipeline("ner", model="OpenMed/OpenMed-PII-German-GTEMed-Base-149M-v1", aggregation_strategy="simple")
text = """
Patient Hans Schmidt (geboren am 15.03.1985, SVN: 12 150385 M 234) wurde heute untersucht.
Kontakt: hans.schmidt@email.de, Telefon: 0171 234 5678.
Adresse: Mozartstraße 15, 80336 München.
"""
entities = ner(text)
for entity in entities:
print(f"{entity['entity_group']}: {entity['word']} (score: {entity['score']:.3f})")
De-identification Example
def redact_pii(text, entities, placeholder='[REDACTED]'):
"""Replace detected PII with placeholders."""
# Sort entities by start position (descending) to preserve offsets
sorted_entities = sorted(entities, key=lambda x: x['start'], reverse=True)
redacted = text
for ent in sorted_entities:
redacted = redacted[:ent['start']] + f"[{ent['entity_group']}]" + redacted[ent['end']:]
return redacted
# Apply de-identification
redacted_text = redact_pii(text, entities)
print(redacted_text)
Batch Processing
from transformers import AutoModelForTokenClassification, AutoTokenizer
import torch
model_name = "OpenMed/OpenMed-PII-German-GTEMed-Base-149M-v1"
model = AutoModelForTokenClassification.from_pretrained(model_name)
tokenizer = AutoTokenizer.from_pretrained(model_name)
texts = [
"Patient Hans Schmidt (geboren am 15.03.1985, SVN: 12 150385 M 234) wurde heute untersucht.",
"Kontakt: hans.schmidt@email.de, Telefon: 0171 234 5678.",
]
inputs = tokenizer(texts, return_tensors='pt', padding=True, truncation=True)
with torch.no_grad():
outputs = model(**inputs)
predictions = torch.argmax(outputs.logits, dim=-1)
Training Details
Dataset
- Source: AI4Privacy PII Masking 400k (German subset)
- Format: BIO-tagged token classification
- Labels: 109 total (54 entity types × 2 BIO tags + O)
Training Configuration
- Max Sequence Length: 512 tokens
- Epochs: 3
- Framework: Hugging Face Transformers + Trainer API
Intended Use & Limitations
Intended Use
- De-identification: Automated redaction of PII in German clinical notes, medical records, and documents
- Compliance: Supporting GDPR, and other privacy regulation compliance
- Data Preprocessing: Preparing datasets for research by removing sensitive information
- Audit Support: Identifying PII in document collections
Limitations
Important: This model is intended as an assistive tool, not a replacement for human review.
- False Negatives: Some PII may not be detected; always verify critical applications
- Context Sensitivity: Performance may vary with domain-specific terminology
- Language: Optimized for German text; may not perform well on other languages
Citation
@misc{openmed-pii-2026,
title = {OpenMed-PII-German-GTEMed-Base-149M-v1: German PII Detection Model},
author = {OpenMed Science},
year = {2026},
publisher = {Hugging Face},
url = {https://huggingface.co/OpenMed/OpenMed-PII-German-GTEMed-Base-149M-v1}
}
Links
- Organization: OpenMed