• #124 State Space Models & Structural Time Series, with Jesse Grabowski

  • Jan 22 2025
  • Length: 1 hr and 36 mins
  • Podcast

#124 State Space Models & Structural Time Series, with Jesse Grabowski

  • Summary

  • Proudly sponsored by PyMC Labs, the Bayesian Consultancy. Book a call, or get in touch!

    • My Intuitive Bayes Online Courses
    • 1:1 Mentorship with me

    Our theme music is « Good Bayesian », by Baba Brinkman (feat MC Lars and Mega Ran). Check out his awesome work!

    Visit our Patreon page to unlock exclusive Bayesian swag ;)

    Takeaways:

    • Bayesian statistics offers a robust framework for econometric modeling.
    • State space models provide a comprehensive way to understand time series data.
    • Gaussian random walks serve as a foundational model in time series analysis.
    • Innovations represent external shocks that can significantly impact forecasts.
    • Understanding the assumptions behind models is key to effective forecasting.
    • Complex models are not always better; simplicity can be powerful.
    • Forecasting requires careful consideration of potential disruptions. Understanding observed and hidden states is crucial in modeling.
    • Latent abilities can be modeled as Gaussian random walks.
    • State space models can be highly flexible and diverse.
    • Composability allows for the integration of different model components.
    • Trends in time series should reflect real-world dynamics.
    • Seasonality can be captured through Fourier bases.
    • AR components help model residuals in time series data.
    • Exogenous regression components can enhance state space models.
    • Causal analysis in time series often involves interventions and counterfactuals.
    • Time-varying regression allows for dynamic relationships between variables.
    • Kalman filters were originally developed for tracking rockets in space.
    • The Kalman filter iteratively updates beliefs based on new data.
    • Missing data can be treated as hidden states in the Kalman filter framework.
    • The Kalman filter is a practical application of Bayes' theorem in a sequential context.
    • Understanding the dynamics of systems is crucial for effective modeling.
    • The state space module in PyMC simplifies complex time series modeling tasks.

    Chapters:

    00:00 Introduction to Jesse Krabowski and Time Series Analysis

    04:33 Jesse's Journey into Bayesian Statistics

    10:51 Exploring State Space Models

    18:28 Understanding State Space Models and Their Components

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