Distance Based Modeling of Interactions in Structured Regression

Stojkovic, Ivan; Jelisavcic, Vladisav; Milutinovic, Veljko; Obradovic, Zoran

Distance Based Modeling of Interactions in Structured Regression

Ivan Stojkovic, Vladisav Jelisavcic, Veljko Milutinovic, Zoran Obradovic

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Proceedings of the Twenty-Fifth International Joint Conference on Artificial Intelligence. Pages 2032-2037.

Abstract

Graphical models, as applied to multi-target prediction problems, commonly utilize interaction terms to impose structure among the output variables. Often, such structure is based on the assumption that related outputs need to be similar and interaction terms that force them to be closer are adopted. Here we relax that assumption and propose a feature that is based on distance and can adapt to ensure that variables have smaller or larger difference in values. We utilized a Gaussian Conditional Random Field model, where we have extended its originally proposed interaction potential to include a distance term. The extended model is compared to the baseline in various structured regression setups. An increase in predictive accuracy was observed on both synthetic examples and real-world applications, including challenging tasks from climate and healthcare domains.

Ivan Stojkovic, Vladisav Jelisavcic, Veljko Milutinovic, and Zoran Obradovic. 2016. Distance Based Modeling of Interactions in Structured Regression. In Proceedings of the Twenty-Fifth International Joint Conference on Artificial Intelligence, IJCAI-16. IJCAI, 2032–2037. https://ijcai.org/proceedings/2016/290

@inproceedings{ijcai2016p290,
  title     = {Distance Based Modeling of Interactions in Structured Regression},
  author    = {Stojkovic, Ivan and Jelisavcic, Vladisav and Milutinovic, Veljko and Obradovic, Zoran},
  booktitle = {Proceedings of the Twenty-Fifth International Joint Conference on
               Artificial Intelligence, {IJCAI-16}},
  publisher = {AAAI Press / International Joint Conferences on Artificial Intelligence},
  editor    = {Subbarao Kambhampati},
  pages     = {2032--2037},
  year      = {2016},
  month     = {7},
  url       = {https://ijcai.org/proceedings/2016/290},
}

TY  - CPAPER
TI  - Distance Based Modeling of Interactions in Structured Regression
AU  - Stojkovic, Ivan
AU  - Jelisavcic, Vladisav
AU  - Milutinovic, Veljko
AU  - Obradovic, Zoran
T2  - Proceedings of the Twenty-Fifth International Joint Conference on Artificial Intelligence, IJCAI-16
PB  - AAAI Press / International Joint Conferences on Artificial Intelligence
PY  - 2016
SP  - 2032
EP  - 2037
UR  - https://ijcai.org/proceedings/2016/290
ER  -