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app.py
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import numpy as np
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import gradio as gr
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from sentence_transformers import SentenceTransformer
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from sklearn.metrics.pairwise import cosine_similarity
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# -----------------------
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# LOAD MODEL (CPU-safe)
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# -----------------------
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model = SentenceTransformer("sentence-transformers/all-MiniLM-L6-v2")
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# -----------------------
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# INTENT DEFINITIONS
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# -----------------------
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INTENTS = {
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"chat": "casual conversation, greetings, talking",
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"search": "asking for information or facts",
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"image_generation": "requesting image creation or visual generation",
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"code": "programming, software development, debugging",
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"research": "deep technical or academic research",
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"study": "learning, studying, explanations, tutorials",
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"project": "building or planning a project",
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"action": "asking the system to do something"
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}
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intent_names = list(INTENTS.keys())
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intent_embeddings = model.encode(
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list(INTENTS.values()),
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normalize_embeddings=True
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)
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# -----------------------
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# ROUTER
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# -----------------------
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def classify(text: str):
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text = text.strip()
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if not text:
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return {}
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text_emb = model.encode([text], normalize_embeddings=True)
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sims = cosine_similarity(text_emb, intent_embeddings)[0]
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scores = {k: float(v) for k, v in zip(intent_names, sims)}
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top_intent = max(scores, key=scores.get)
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return {
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"text": text,
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"top_intent": top_intent,
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"scores": scores
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}
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# -----------------------
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# GRADIO APP (THIS IS IMPORTANT)
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# -----------------------
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app = gr.Interface(
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fn=classify,
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inputs=gr.Textbox(label="User Input"),
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outputs=gr.JSON(label="Classification Result"),
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title="🧠 Zero-Shot Intent Router",
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description="Single-pass intent routing for prompt + MPC selection"
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)
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