J013021 テンソル分解による解析結果データのデータ圧縮*([J013-02]流体情報学とデータ解析(2))

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タイトル別名
  • J013021 Compression of Simulation Results Database Using Tensor Decomposition

抄録

With the increase in the size of simulation results database, it has become a big challenge to transfer large data between different locations. In this study, we have developed a data compression method based on tensor compression. Voxel simulation results data are represented as third-order tensors and a tensor decomposition algorithm based on HOOI is applied to the tensors. After tensor decompression, the original tensor is decomposed into a core tensor and a series of basis matrices, whose summed size is considerably smaller than that of the original tensor. As a result, a compression ratio of over 60:1 is achieved for steady flow simulation and the error is below 5%. A compression ratio of over 70:1 is achieved for unsteady flow simulation and the error is below 5%. We have confirmed that no significant information is lost during the data compression process.

収録刊行物

  • 年次大会

    年次大会 2013 (0), _J013021-1-_J013021-5, 2013

    一般社団法人 日本機械学会

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