129: Improving and reducing biases with a novel theory

Henning Hoeber discusses a new tool for rock physics in his recent paper published in September's The Leading Edge. In this episode, Henning explains the theory of omitted variable bias (OVB) and its connection to rock physics, why OVB hasn't appeared before in the geoscience literature, how OVB helps geophysicists understand biases in models, the real-world implications for improving a bias model, and how he will apply OVB to his future research. Visit https://seg.org/podcast to find links to Henning's article, as well as the rest of the special section for September's The Leading Edge. RELATED LINKS * Henning Hoeber, (2021), "Model misspecification and bias in the least-squares algorithm: Implications for linearized isotropic AVO," The Leading Edge 40: 646–654. (https://doi.org/10.1190/tle40090646.1) * Agnibha Das and Madhumita Sengupta, (2021), "Introduction to this special section: Rock physics," The Leading Edge 40: 644–644. (https://doi.org/10.1190/tle40090644.1) * Read the special section: Rock physics (https://library.seg.org/toc/leedff/40/9) BIOGRAPHY Henning Hoeber is Research Principal at CGG and Visiting Professor at Heriot-Watt University. He has over 20 years of experience in seismic imaging, i.e. time-lapse and reservoir physics. He works with Ph.D. students as a Visiting Professor at Heriot-Watt, Edinburgh. He is the co-author of Compendium of Theoretical Physics (Springer) and 3 SEG reprint volumes on elastic wave theory and diffraction imaging. SPONSOR This episode is brought to you by TGS. TGS offers a wide range of energy data and insights to meet the industry where it’s at and where it’s headed. TGS provides scientific data and intelligence to companies active in the energy sector. In addition to a global, extensive and diverse energy data library, TGS offers specialized services such as advanced processing and analytics alongside cloud-based data applications and solutions. Visit https://www.tgs.com/ to learn more. CREDITS Original music by Zach Bridges. This episode was hosted, edited, and produced by Andrew Geary at 51 features, LLC. Thank you to the SEG podcast team: Ted Bakamjian, Kathy Gamble, and Ally McGinnis. You can follow the podcast to hear the latest episodes on Apple Podcasts, Google Podcasts, and Spotify.