3 Phase Data
Description
This is synthetic data modelling non-intrusive measurements on a pipe-line transporting a mixture of oil, water and gas. The flow in the pipe takes one out of three possible configurations: horizontally stratified, nested annular or homogeneous mixture flow. The data lives in a 12-dimensional measurement space, but for each configuration, there is only two degrees of freedom: the fraction of water and the fraction of oil. (The fraction of gas is redundant, since the three fractions must sum to one.) Hence, the data lives on a number of 'sheets' which locally are approximately 2-dimensional.
At the moment, there is no further information online. This link gives references to three papers involving the data.
Details
The data is available either as a tar-file containing compressed ASCII files, or as a compressed MATLAB (R) workspace. The files/variables contain:
- Data*, 1000 measurements, 1000-by-12
- Data*Frctns, the corresponding fractions of water and oil
(in that order), 1000-by-2
- Data*Lbls, the corresponding configuration labels, given in a
1-of-3 coding scheme, where
- [1 0 0] == Homogeneous configuration
- [0 1 0] == Annular configuration
- [0 0 1] == Stratified configuration
1000-by-3
'*' above is replaced by 'Trn', 'Vdn', and 'Tst', which are meant to correspond to training, validation and test data; the three file sets all contain 1000 samples. The fractions and configurations are picked at random from corresponding uniform distributions.
gzipped tar-file
gzipped MATLAB
workspace
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Markus Svensén
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Copyright © Markus Svensén 1996