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7bc4b4f
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Parent(s):
b589f1b
Delete main.py
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main.py
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from fastapi import FastAPI
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from pydantic import BaseModel
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import pickle
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import pandas as pd
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import numpy as np
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import uvicorn
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# call the app
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app = FastAPI(title="API")
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# Load the model and scaler
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def load_model_and_scaler():
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with open("model.pkl", "rb") as f1, open("scaler.pkl", "rb") as f2:
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return pickle.load(f1), pickle.load(f2)
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model, scaler = load_model_and_scaler()
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def predict(df, endpoint="simple"):
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# Scaling
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scaled_df = scaler.transform(df) # Scale the input data using a pre-defined scaler
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# Prediction
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prediction = model.predict_proba(scaled_df) # Make predictions using a pre-trained model
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highest_proba = prediction.max(axis=1) # Get the highest probability for each prediction
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# Assign predicted labels based on the highest probabilities
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predicted_labels = ["Patient does not have sepsis" if i == 0 else "Patient has sepsis" for i in highest_proba]
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print(f"Predicted labels: {predicted_labels}") # Print the predicted labels to the terminal
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print(highest_proba) # Print the highest probabilities to the terminal
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response = []
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for label, proba in zip(predicted_labels, highest_proba):
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# Create a response for each prediction with the predicted label and probability
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output = {
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"prediction": label,
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"probability of prediction": str(round(proba * 100)) + '%' # Convert the probability to a percentage
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}
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response.append(output) # Add the response to the list of responses
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return response # Return the list of responses
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class Patient(BaseModel):
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Blood_Work_R1: int
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Blood_Pressure: int
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Blood_Work_R3: int
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BMI: float
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Blood_Work_R4: float
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Patient_age: int
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class Patients(BaseModel):
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all_patients: list[Patient]
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@classmethod
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def return_list_of_dict(cls, patients: "Patients"):
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patient_list = []
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for patient in patients.all_patients: #for each item in all_patients,
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patient_dict = patient.dict() #convert to a dictionary
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patient_list.append(patient_dict) #add it to the empty list called patient_list
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return patient_list
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# Endpoints
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# Root Endpoint
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@app.get("/")
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def root():
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return {"API": "This is an API for sepsis prediction."}
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# Prediction endpoint
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@app.post("/predict")
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def predict_sepsis(patient: Patient):
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# Make prediction
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data = pd.DataFrame(patient.dict(), index=[0])
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parsed = predict(df=data)
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return {"output": parsed}
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# Multiple Prediction Endpoint
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@app.post("/predict_multiple")
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def predict_sepsis_for_multiple_patients(patients: Patients):
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"""Make prediction with the passed data"""
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data = pd.DataFrame(Patients.return_list_of_dict(patients))
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parsed = predict(df=data, endpoint="multi")
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return {"output": parsed}
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if __name__ == "__main__":
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uvicorn.run("main:app", reload=True)
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