Fraud Detection Models Serving

Online model serving with Fraud Detection model trained with XGBoost on IEEE-CIS dataset
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📖 Introduction 📖

This project demonstrates how to serve a fraud detection model trained with XGBoost on the dataset from the IEEE-CIS Fraud Detection competition.

🏃‍♂️ Getting Started 🏃‍♂️

0. Clone the Repository:

git clone [email protected]:bentoml/Fraud-Detection-Model-Serving.git
cd Fraud-Detection-Model-Serving

1. Install Dependencies:

pip install -r ./dev-requirements.txt

2. Download dataset

Before downloading, set up your Kaggle API Credentials following instructions here and accept the dataset rules on Kaggle

./download_data.sh

3. Model Training

Execute the ./IEEE-CIS-Fraud-Detection.ipynb notebook with the train.sh script:

./train.sh

This will create 3 variations of the model, you can view and manage those models via the bentoml models CLI commnad:

$ bentoml models list

Tag                                         Module           Size        Creation Time
ieee-fraud-detection-tiny:qli6n3f6jcta3uqj  bentoml.xgboost  141.40 KiB  2023-03-08 23:03:36
ieee-fraud-detection-lg:o7wqb5f6jcta3uqj    bentoml.xgboost  18.07 MiB   2023-03-08 23:03:17
ieee-fraud-detection-sm:5yblgmf6i2ta3uqj    bentoml.xgboost  723.00 KiB  2023-03-08 22:52:16

Saved models can also be accessed via the BentoML Python API, e.g.:

import bentoml
import pandas as pd
import numpy as np

model_ref = bentoml.xgboost.get("ieee-fraud-detection-sm:latest")
model_runner = model_ref.to_runner()
model_runner.init_local()
model_preprocessor = model_ref.custom_objects["preprocessor"]

test_transactions = pd.read_csv("./data/test_transaction.csv")[0:500]
test_transactions = model_preprocessor.transform(test_transactions)
result = model_runner.predict_proba.run(test_transactions)
print(np.argmax(result, axis=1))

4. Serving the model

The service.py file contains the source code for defining an ML service:

import numpy as np
import pandas as pd
from sample import sample_input

import bentoml
from bentoml.io import JSON
from bentoml.io import PandasDataFrame

model_ref = bentoml.xgboost.get("ieee-fraud-detection-lg:latest")
preprocessor = model_ref.custom_objects["preprocessor"]
fraud_model_runner = model_ref.to_runner()

svc = bentoml.Service("fraud_detection", runners=[fraud_model_runner])

input_spec = PandasDataFrame.from_sample(sample_input)

@svc.api(input=input_spec, output=JSON())
async def is_fraud(input_df: pd.DataFrame):
    input_df = input_df.astype(sample_input.dtypes)
    input_features = preprocessor.transform(input_df)
    results = await fraud_model_runner.predict_proba.async_run(input_features)
    predictions = np.argmax(results, axis=1)  # 0 is not fraud, 1 is fraud
    return {"is_fraud": list(map(bool, predictions)), "is_fraud_prob": results[:, 1]}

Run bentoml serve command to launch the server locally:

bentoml serve

🌐 Interacting with the Service 🌐

The default mode of BentoML's model serving is via HTTP server. Here, we showcase a few examples of how one can interact with the service:

Swagger UI

Visit http://localhost:3000/ in a browser and send test requests via the UI.

cURL

Via the command curl, you can:

head --lines=200 ./data/test_transaction.csv | curl -X POST -H 'Content-Type: text/csv' --data-binary @- http://0.0.0.0:3000/is_fraud

Via BentoClient 🐍

import pandas as pd
from bentoml.client import Client

test_transactions = pd.read_csv("./data/test_transaction.csv")[0:500]
client = Client.from_url('localhost:3000')

results = client.is_fraud(test_transaction)
print(results)

🚀 Deploying to Production 🚀

Effortlessly transition your project into a production-ready application using BentoCloud, the production-ready platform for managing and deploying machine learning models.

Start by creating a BentoCloud account. Once you've signed up, log in to your BentoCloud account using the command:

bentoml cloud login --api-token <your-api-token> --endpoint <bento-cloud-endpoint>

Note: Replace <your-api-token> and <bento-cloud-endpoint> with your specific API token and the BentoCloud endpoint respectively.

Next, build your BentoML service using the build command:

bentoml build

Then, push your freshly-built Bento service to BentoCloud using the push command:

bentoml push <name:version>

Lastly, deploy this application to BentoCloud with a single bentoml deployment create command following the deployment instructions.

BentoML offers a number of options for deploying and hosting online ML services into production, learn more at Deploying a Bento.

---

In this README, we will also go over a basic deployment strategy with Docker containers.

1. Build a docker image

Build a Bento to lock the model version and dependency tree:

bentoml build

Ensure docker is installed and running, build a docker image with bentoml containerize

bentoml containerize fraud_detection:latest

Test out the docker image built:

docker run -it --rm -p 3000:3000 fraud_detection:{YOUR BENTO VERSION}

2. Inference on GPU

Use bentofile-gpu.yaml to build a new Bento, which adds the following two lines to the YAML. This ensures the docker image comes with GPU libraries installed and BentoML will automatically load models on GPU when running the docker image with GPU devices available.

docker:
  cuda_version: "11.6.2"

Build Bento with GPU support:

bentoml build -f ./bentofile-gpu.yaml

Build and run docker image with GPU enabled:

bentoml containerize fraud_detection:latest

docker run --gpus all --device /dev/nvidia0 \
           --device /dev/nvidia-uvm --device /dev/nvidia-uvm-tools \
           --device /dev/nvidia-modeset --device /dev/nvidiactl \
           fraud_detection:{YOUR BENTO VERSION}

3. Multi-model Inference Pipeline/Graph

BentoML makes it efficient to create ML service with multiple ML models, which is often used for combining multiple fraud detection models and getting an aggregated result. With BentoML, users can choose to run models sequentially or in parallel using the Python AsyncIO APIs along with Runners APIs. This makes it possible create inference graphes or multi-stage inference pipeline all from Python APIs.

An example can be found under inference_graph_demo that runs all three models simutaneously and aggregate their results:

cd inference_graph_demo

bentoml serve

Learn more about BentoML Runner usage here

4. Benchmark Testing

Visit the /benchmark/README.md for how to run benchmark tests on your fraud detection service and understanding its throughput and latency on your deployment target.

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