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Designing Machine Learning Workflows in Python

Learn to build pipelines that stand the test of time.

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4 horas16 vídeos51 exercícios10.762 aprendizesTrophyDeclaração de Realização

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Descrição do Curso

Deploying machine learning models in production seems easy with modern tools, but often ends in disappointment as the model performs worse in production than in development. This course will give you four superpowers that will make you stand out from the data science crowd and build pipelines that stand the test of time: how to exhaustively tune every aspect of your model in development; how to make the best possible use of available domain expertise; how to monitor your model in performance and deal with any performance deterioration; and finally how to deal with poorly or scarcely labelled data. Digging deep into the cutting edge of sklearn, and dealing with real-life datasets from hot areas like personalized healthcare and cybersecurity, this course reveals a view of machine learning from the frontline.
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  1. 1

    The Standard Workflow

    Gratuito

    In this chapter, you will be reminded of the basics of a supervised learning workflow, complete with model fitting, tuning and selection, feature engineering and selection, and data splitting techniques. You will understand how these steps in a workflow depend on each other, and recognize how they can all contribute to, or fight against overfitting: the data scientist's worst enemy. By the end of the chapter, you will already be fluent in supervised learning, and ready to take the dive towards more advanced material in later chapters.

    Reproduzir Capítulo Agora
    Supervised learning pipelines
    50 xp
    Feature engineering
    100 xp
    Your first pipeline
    100 xp
    Model complexity and overfitting
    50 xp
    Grid search CV for model complexity
    100 xp
    Number of trees and estimators
    50 xp
    Feature engineering and overfitting
    50 xp
    Categorical encodings
    100 xp
    Feature transformations
    100 xp
    Bringing it all together
    100 xp
  2. 2

    The Human in the Loop

    In the previous chapter, you perfected your knowledge of the standard supervised learning workflows. In this chapter, you will critically examine the ways in which expert knowledge is incorporated in supervised learning. This is done through the identification of the appropriate unit of analysis which might require feature engineering across multiple data sources, through the sometimes imperfect process of labeling examples, and through the specification of a loss function that captures the true business value of errors made by your machine learning model.

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  3. 3

    Model Lifecycle Management

    In the previous chapter, you employed different ways of incorporating feedback from experts in your workflow, and evaluating it in ways that are aligned with business value. Now it is time for you to practice the skills needed to productize your model and ensure it continues to perform well thereafter by iteratively improving it. You will also learn to diagnose dataset shift and mitigate the effect that a changing environment can have on your model's accuracy.

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  4. 4

    Unsupervised Workflows

    In the previous chapters you established a solid foundation in supervised learning, complete with knowledge of deploying models in production but always assumed you a labeled dataset would be available for your analysis. In this chapter, you take on the challenge of modeling data without any, or with very few, labels. This takes you into a journey into anomaly detection, a kind of unsupervised modeling, as well as distance-based learning, where beliefs about what constitutes similarity between two examples can be used in place of labels to help you achieve levels of accuracy comparable to a supervised workflow. Upon completing this chapter, you will clearly stand out from the crowd of data scientists in confidently knowing what tools to use to modify your workflow in order to overcome common real-world challenges.

    Reproduzir Capítulo Agora
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conjuntos de dados

CreditFlowsAttacksHepatitisProteinsArrhythmia

colaboradores

Collaborator's avatar
Chester Ismay
Collaborator's avatar
Sara Billen
Christoforos Anagnostopoulos HeadshotChristoforos Anagnostopoulos

Honorary Associate Professor

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