Abstract

Data-And model-driven computer simulations are increasingly critical in many application domains. These simulations may track 10s or 100s of parameters, affected by complex inter-dependent dynamic processes. Moreover, decision makers usually need to run large simulation ensembles, containing 1000s of simulations. In this paper, we rely on a tensor-based framework to represent and analyze patterns in large simulation ensemble data sets to obtain a high-level understanding of the dynamic processes implied by a given ensemble of simulations.We, further, note that the inherent sparsity of the simulation ensembles (relative to the space of potential simulations one can run) constitutes a significant problem in discovering these underlying patterns. To address this challenge, we propose a partition-stitch sampling scheme, which divides the parameter space into subspaces to collect several lower modal ensembles, and complement this with a novel Multi-Task Tensor Decomposition (M2TD), technique which helps effectively and efficiently stitch these subensembles back. Experiments showed that, for a given budget of simulations, the proposed structured sampling scheme leads to significantly better overall accuracy relative to traditional sampling approaches, even when the user does not have a perfect information to help guide the structured partitioning process.

Original languageEnglish (US)
Title of host publicationProceedings - IEEE 34th International Conference on Data Engineering, ICDE 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1156-1167
Number of pages12
ISBN (Electronic)9781538655207
DOIs
StatePublished - Oct 24 2018
Event34th IEEE International Conference on Data Engineering, ICDE 2018 - Paris, France
Duration: Apr 16 2018Apr 19 2018

Other

Other34th IEEE International Conference on Data Engineering, ICDE 2018
CountryFrance
CityParis
Period4/16/184/19/18

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Keywords

  • Simulation
  • Tensor
  • Tensor Decomposition

ASJC Scopus subject areas

  • Information Systems
  • Information Systems and Management
  • Hardware and Architecture

Cite this

Li, X., Candan, K., & Sapino, M. L. (2018). M2td: Multi-task tensor decomposition for sparse ensemble simulations. In Proceedings - IEEE 34th International Conference on Data Engineering, ICDE 2018 (pp. 1156-1167). [8509327] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICDE.2018.00106