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Initial Gradio Space implementation for WimBERT Synth v0

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  1. .gitignore +19 -0
  2. LICENSE +202 -0
  3. README.md +93 -6
  4. app.py +249 -0
  5. examples.json +7 -0
  6. requirements.txt +5 -0
.gitignore ADDED
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+ venv/
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+ *.pyc
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+ *.pyo
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+ *.so
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+ *.egg
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+ dist/
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+ build/
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+ .DS_Store
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+ .vscode/
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+ .idea/
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+ *.log
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+ .env
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+ .venv
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+ gradio_cached_examples/
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+ flagged/
LICENSE ADDED
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README.md CHANGED
@@ -1,14 +1,101 @@
1
  ---
2
- title: WimBERT Synth
3
- emoji: 🌖
4
- colorFrom: red
5
- colorTo: pink
6
  sdk: gradio
7
  sdk_version: 5.49.1
8
  app_file: app.py
9
  pinned: false
10
  license: apache-2.0
11
- short_description: Demonstratie van signaalberichtlabeling door WimBERT synt
12
  ---
13
 
14
- Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
  ---
2
+ title: WimBERT Synth v0
3
+ emoji: 🏛️
4
+ colorFrom: blue
5
+ colorTo: indigo
6
  sdk: gradio
7
  sdk_version: 5.49.1
8
  app_file: app.py
9
  pinned: false
10
  license: apache-2.0
11
+ short_description: Dutch multi-label classifier for signal messages
12
  ---
13
 
14
+ # WimBERT Synth v0: Dutch Multi-Label Signal Classifier
15
+
16
+ Demo of a dual-head BERT classifier trained on synthetic Dutch government signals.
17
+ Predicts relevant topics (**onderwerp**, 64 labels) and sentiment/experience
18
+ (**beleving**, 33 labels) for each input message.
19
+
20
+ ## 🚀 Usage
21
+
22
+ 1. Enter Dutch text (e.g., a citizen feedback message about government services)
23
+ 2. Click **Voorspel** to classify
24
+ 3. Adjust **Drempel** (threshold) to change prediction sensitivity
25
+ 4. View results in three tabs:
26
+ - **Samenvatting**: Top-K predictions per head with color-coded probabilities
27
+ - **Alle labels**: Complete list of all labels sorted by probability
28
+ - **JSON**: Raw predictions in machine-readable format
29
+
30
+ ## 🎯 Features
31
+
32
+ - **Dual-head classification**: Simultaneously predicts topic (onderwerp) and experience (beleving)
33
+ - **Interactive threshold**: Adjust which labels are considered "predicted"
34
+ - **Color-coded visualization**: Probability intensity shown via color (darker = higher probability)
35
+ - **Accessible**: All probabilities shown numerically, colors are enhancements
36
+ - **Fast**: Optimized for CPU inference (~2-5s) with optional GPU acceleration
37
+
38
+ ## 🤖 Model
39
+
40
+ - **Base model**: `bert-base-multilingual-cased`
41
+ - **Architecture**: Dual classification heads with 64 onderwerp + 33 beleving labels
42
+ - **Training**: Synthetic data via Argilla + distillation pipeline
43
+ - **License**: Apache-2.0
44
+ - **Full model card**: [UWV/wimbert-synth-v0](https://huggingface.co/UWV/wimbert-synth-v0)
45
+
46
+ ### Labels
47
+
48
+ **Onderwerp (64 topics)**:
49
+ Advies, Algemene veiligheid, Begeleiding, Bijstand, Bouwoverlast, COVID-19, Criminaliteit,
50
+ Documentaanvraag, Energiekosten, Evenementen, Financiële regelingen, Geluidsoverlast,
51
+ Gemeentelijke heffingen, Hangjongeren, Huisdierenoverlast, Hulp aan dak- en thuislozen,
52
+ Infrastructuur, Kwijtschelding, Migratie, Onderhoud omgeving, Parkeren, Schade en claims,
53
+ Verkeersmaatregelen, Verkeersveiligheid, Wijkteam, and more...
54
+
55
+ **Beleving (33 experiences)**:
56
+ Afspraakmogelijkheden, Algemene ervaring, Behulpzaamheid, Bereikbaarheid, Bezwaar & bewijs,
57
+ Communicatie, Deskundigheid, Duidelijkheid, Efficiëntie, Faciliteiten, Gebruiksgemak,
58
+ Informatievoorziening, Integriteit, Kwaliteit klantenservice, Snelheid van afhandeling,
59
+ Vriendelijkheid, Wachttijd, and more...
60
+
61
+ ## 🔒 Privacy
62
+
63
+ - Input text is processed **in-memory only**
64
+ - No data is logged or stored beyond standard Gradio telemetry
65
+ - Model runs entirely within this Space (no external API calls)
66
+
67
+ ## ⚙️ Hardware
68
+
69
+ - **CPU**: Works on free tier (~3-5s inference)
70
+ - **GPU (T4)**: Recommended for production (<1s inference)
71
+
72
+ Current Space is running on: **CPU** with FP32
73
+
74
+ ## 🛠️ Local Development
75
+
76
+ ```bash
77
+ # Clone and setup
78
+ git clone https://huggingface.co/spaces/UWV/wimbert-synth-v0
79
+ cd wimbert-synth-v0
80
+ python3 -m venv venv
81
+ source venv/bin/activate
82
+ pip install -r requirements.txt
83
+
84
+ # Run
85
+ python app.py
86
+ ```
87
+
88
+ ## 📊 Example Use Cases
89
+
90
+ - **Citizen feedback routing**: Automatically categorize incoming messages
91
+ - **Sentiment analysis**: Understand citizen experience with government services
92
+ - **Analytics**: Aggregate trends across topics and experiences
93
+ - **Triage**: Prioritize urgent or negative feedback
94
+
95
+ ⚠️ **Note**: This is a research/demo tool. Not intended for automated decision-making.
96
+
97
+ ---
98
+
99
+ **Built with**: Gradio • Transformers • PyTorch
100
+ **Developed by**: UWV
101
+ **License**: Apache-2.0
app.py ADDED
@@ -0,0 +1,249 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ #!/usr/bin/env python3
2
+ """
3
+ WimBERT Synth v0 Gradio Space
4
+ Dual-head multi-label classifier for Dutch signal messages
5
+ """
6
+
7
+ import json
8
+ import importlib.util
9
+ import torch
10
+ import gradio as gr
11
+ from huggingface_hub import snapshot_download
12
+
13
+ # Constants
14
+ MODEL_REPO = "UWV/wimbert-synth-v0"
15
+ DEVICE = torch.device("cuda" if torch.cuda.is_available() else "cpu")
16
+ DTYPE = torch.float16 if DEVICE.type == "cuda" else torch.float32
17
+ MAX_LENGTH = 512 # Default to 512 for better CPU performance
18
+
19
+ print(f"🔧 Loading model from {MODEL_REPO}...")
20
+ print(f"🖥️ Device: {DEVICE} ({DTYPE})")
21
+
22
+ # Download model files (uses HF cache)
23
+ model_dir = snapshot_download(MODEL_REPO, cache_dir=None)
24
+
25
+ # Dynamic import of model.py from downloaded dir
26
+ spec = importlib.util.spec_from_file_location("model", f"{model_dir}/model.py")
27
+ model_module = importlib.util.module_from_spec(spec)
28
+ spec.loader.exec_module(model_module)
29
+ DualHeadModel = model_module.DualHeadModel
30
+
31
+ # Load model + tokenizer + config
32
+ model, tokenizer, config = DualHeadModel.from_pretrained(model_dir, device=DEVICE)
33
+
34
+ # Cast to target dtype
35
+ if DTYPE == torch.float16:
36
+ model = model.half()
37
+
38
+ # Warm-up inference
39
+ with torch.no_grad():
40
+ dummy_input = tokenizer("Warm-up", return_tensors="pt", padding="max_length",
41
+ max_length=MAX_LENGTH, truncation=True)
42
+ _ = model.predict(
43
+ dummy_input["input_ids"].to(DEVICE),
44
+ dummy_input["attention_mask"].to(DEVICE)
45
+ )
46
+
47
+ print(f"✅ Model loaded and warmed up")
48
+
49
+ # Extract label names
50
+ LABELS_ONDERWERP = config["labels"]["onderwerp"]
51
+ LABELS_BELEVING = config["labels"]["beleving"]
52
+
53
+
54
+ def prob_to_color(prob: float, threshold: float) -> str:
55
+ """Generate CSS style for probability visualization"""
56
+ lightness = 95 - int(prob * 65)
57
+ border = "2px solid #1e3a8a" if prob >= threshold else "1px solid #e5e7eb"
58
+ return f"background: hsl(210, 80%, {lightness}%); border: {border}; padding: 6px 12px; border-radius: 4px; margin: 2px 0;"
59
+
60
+
61
+ def format_topk(labels: list, probs: list, threshold: float, topk: int) -> str:
62
+ """Generate HTML for top-K labels"""
63
+ sorted_indices = sorted(range(len(probs)), key=lambda i: probs[i], reverse=True)
64
+ html = "<div style='display: flex; flex-direction: column; gap: 6px;'>"
65
+ for idx in sorted_indices[:topk]:
66
+ label = labels[idx]
67
+ prob = probs[idx]
68
+ style = prob_to_color(prob, threshold)
69
+ predicted = " ✓" if prob >= threshold else ""
70
+ html += f"<div style='{style}'><b>{label}</b>: {prob:.3f}{predicted}</div>"
71
+ html += "</div>"
72
+ return html
73
+
74
+
75
+ def format_all_labels(head_name: str, labels: list, probs: list, threshold: float) -> str:
76
+ """Generate scrollable table for all labels"""
77
+ sorted_indices = sorted(range(len(probs)), key=lambda i: probs[i], reverse=True)
78
+ html = f"<h3>{head_name}</h3><div style='max-height: 500px; overflow-y: auto; border: 1px solid #e5e7eb; border-radius: 4px;'>"
79
+ html += "<table style='width: 100%; border-collapse: collapse;'>"
80
+ html += "<thead style='position: sticky; top: 0; background: white; border-bottom: 2px solid #e5e7eb;'>"
81
+ html += "<tr><th style='text-align: left; padding: 8px;'>Label</th><th style='text-align: right; padding: 8px;'>Probability</th><th style='padding: 8px;'>Predicted</th></tr>"
82
+ html += "</thead><tbody>"
83
+ for idx in sorted_indices:
84
+ label = labels[idx]
85
+ prob = probs[idx]
86
+ style = prob_to_color(prob, threshold)
87
+ predicted = "✓" if prob >= threshold else ""
88
+ html += f"<tr><td style='{style}'><b>{label}</b></td><td style='text-align: right; padding: 8px;'>{prob:.4f}</td><td style='text-align: center; padding: 8px;'>{predicted}</td></tr>"
89
+ html += "</tbody></table></div>"
90
+ return html
91
+
92
+
93
+ @torch.inference_mode()
94
+ def predict(text: str, threshold: float, topk: int):
95
+ """Run inference and return visualizations"""
96
+ if not text or not text.strip():
97
+ empty_msg = "<p style='color: #666; font-style: italic;'>Voer een bericht in om te classificeren...</p>"
98
+ return empty_msg, empty_msg, {}
99
+
100
+ # Tokenize
101
+ inputs = tokenizer(
102
+ text,
103
+ return_tensors="pt",
104
+ padding="max_length",
105
+ max_length=MAX_LENGTH,
106
+ truncation=True
107
+ )
108
+
109
+ # Move to device
110
+ input_ids = inputs["input_ids"].to(DEVICE)
111
+ attention_mask = inputs["attention_mask"].to(DEVICE)
112
+
113
+ # Predict
114
+ onderwerp_probs, beleving_probs = model.predict(input_ids, attention_mask)
115
+
116
+ # Convert to lists
117
+ onderwerp_probs = onderwerp_probs[0].cpu().numpy().tolist()
118
+ beleving_probs = beleving_probs[0].cpu().numpy().tolist()
119
+
120
+ # Generate summary view (top-K for each head side by side)
121
+ summary_html = "<div style='display: grid; grid-template-columns: 1fr 1fr; gap: 20px;'>"
122
+ summary_html += f"<div><h3>Onderwerp (Top-{topk})</h3>{format_topk(LABELS_ONDERWERP, onderwerp_probs, threshold, topk)}</div>"
123
+ summary_html += f"<div><h3>Beleving (Top-{topk})</h3>{format_topk(LABELS_BELEVING, beleving_probs, threshold, topk)}</div>"
124
+ summary_html += "</div>"
125
+
126
+ # Generate all labels view
127
+ all_labels_html = "<div style='display: grid; grid-template-columns: 1fr 1fr; gap: 20px;'>"
128
+ all_labels_html += f"<div>{format_all_labels('Onderwerp', LABELS_ONDERWERP, onderwerp_probs, threshold)}</div>"
129
+ all_labels_html += f"<div>{format_all_labels('Beleving', LABELS_BELEVING, beleving_probs, threshold)}</div>"
130
+ all_labels_html += "</div>"
131
+
132
+ # Generate JSON output
133
+ json_output = {
134
+ "text": text,
135
+ "threshold": threshold,
136
+ "onderwerp": {
137
+ "probabilities": {label: float(prob) for label, prob in zip(LABELS_ONDERWERP, onderwerp_probs)},
138
+ "predicted": [label for label, prob in zip(LABELS_ONDERWERP, onderwerp_probs) if prob >= threshold]
139
+ },
140
+ "beleving": {
141
+ "probabilities": {label: float(prob) for label, prob in zip(LABELS_BELEVING, beleving_probs)},
142
+ "predicted": [label for label, prob in zip(LABELS_BELEVING, beleving_probs) if prob >= threshold]
143
+ }
144
+ }
145
+
146
+ return summary_html, all_labels_html, json_output
147
+
148
+
149
+ def load_examples():
150
+ """Load example texts"""
151
+ try:
152
+ with open("examples.json") as f:
153
+ return json.load(f)
154
+ except:
155
+ return []
156
+
157
+
158
+ # Build Gradio interface
159
+ with gr.Blocks(title="WimBERT Synth v0", theme=gr.themes.Soft()) as demo:
160
+ gr.Markdown("""
161
+ # 🏛️ WimBERT Synth v0: Multi-label Signaal Classifier
162
+
163
+ Classificeert Nederlandse signaalberichten op **Onderwerp** (64 categorieën) en **Beleving** (33 categorieën).
164
+ """)
165
+
166
+ with gr.Row():
167
+ with gr.Column(scale=2):
168
+ input_text = gr.Textbox(
169
+ label="Signaalbericht (Nederlands)",
170
+ lines=8,
171
+ placeholder="Bijv: Ik kan niet parkeren bij mijn huis en de website voor vergunningen werkt niet...",
172
+ info="Voer een bericht in en klik op 'Voorspel'"
173
+ )
174
+ with gr.Row():
175
+ predict_btn = gr.Button("🔮 Voorspel", variant="primary", scale=2)
176
+ clear_btn = gr.ClearButton([input_text], value="🗑️ Wissen", scale=1)
177
+
178
+ with gr.Column(scale=1):
179
+ threshold_slider = gr.Slider(
180
+ minimum=0,
181
+ maximum=1,
182
+ value=0.5,
183
+ step=0.05,
184
+ label="🎯 Drempel",
185
+ info="Labels boven deze waarde worden als 'voorspeld' gemarkeerd"
186
+ )
187
+ topk_slider = gr.Slider(
188
+ minimum=1,
189
+ maximum=15,
190
+ value=5,
191
+ step=1,
192
+ label="📊 Top-K",
193
+ info="Aantal top labels om te tonen in samenvatting"
194
+ )
195
+ gr.Markdown(f"""
196
+ **Hardware:** {DEVICE.type.upper()}
197
+ **Dtype:** {DTYPE}
198
+ **Max length:** {MAX_LENGTH}
199
+ """)
200
+
201
+ with gr.Tabs():
202
+ with gr.Tab("📋 Samenvatting"):
203
+ summary_output = gr.HTML(label="Top voorspellingen per categorie")
204
+
205
+ with gr.Tab("📊 Alle labels"):
206
+ all_labels_output = gr.HTML(label="Volledige classificatie")
207
+
208
+ with gr.Tab("💾 JSON"):
209
+ json_output = gr.JSON(label="Ruwe output")
210
+
211
+ gr.Examples(
212
+ examples=load_examples(),
213
+ inputs=input_text,
214
+ label="📝 Voorbeelden"
215
+ )
216
+
217
+ gr.Markdown("""
218
+ ---
219
+ ### ℹ️ Over dit model
220
+ - **Model:** `UWV/wimbert-synth-v0` (dual-head BERT)
221
+ - **Licentie:** Apache-2.0
222
+ - **Privacy:** Input wordt alleen in-memory verwerkt, niet opgeslagen
223
+
224
+ [Model Card](https://huggingface.co/UWV/wimbert-synth-v0) • Gebouwd met Gradio
225
+ """)
226
+
227
+ # Event handlers
228
+ predict_btn.click(
229
+ fn=predict,
230
+ inputs=[input_text, threshold_slider, topk_slider],
231
+ outputs=[summary_output, all_labels_output, json_output]
232
+ )
233
+
234
+ # Update predictions when threshold/topk changes (if there's existing output)
235
+ threshold_slider.change(
236
+ fn=predict,
237
+ inputs=[input_text, threshold_slider, topk_slider],
238
+ outputs=[summary_output, all_labels_output, json_output]
239
+ )
240
+
241
+ topk_slider.change(
242
+ fn=predict,
243
+ inputs=[input_text, threshold_slider, topk_slider],
244
+ outputs=[summary_output, all_labels_output, json_output]
245
+ )
246
+
247
+
248
+ if __name__ == "__main__":
249
+ demo.launch()
examples.json ADDED
@@ -0,0 +1,7 @@
 
 
 
 
 
 
 
 
1
+ [
2
+ ["Ik heb geprobeerd te bellen maar krijg niemand aan de lijn. Kan iemand mij helpen met mijn vraag over mijn uitkering?"],
3
+ ["De vuilcontainers zijn weer kapot en het stinkt hier verschrikkelijk. Wanneer wordt dit opgelost?"],
4
+ ["Ik wil graag een parkeervergunning aanvragen maar de website werkt niet goed. Kan dit eenvoudiger?"],
5
+ ["Bedankt voor de snelle en vriendelijke hulp bij mijn aanvraag! De medewerker was zeer behulpzaam."],
6
+ ["Ik ben erg ontevreden over de lange wachttijden en onduidelijke informatie die ik kreeg."]
7
+ ]
requirements.txt ADDED
@@ -0,0 +1,5 @@
 
 
 
 
 
 
1
+ gradio>=4.0
2
+ transformers>=4.40
3
+ torch>=2.0
4
+ safetensors>=0.4
5
+ huggingface-hub>=0.20