Glossary - Revision history

Lund: Update to match current MORB database

2024-04-02T15:25:30Z

Update to match current MORB database

Lund: Updated from list of abbreviations

2023-05-11T12:15:44Z

Updated from list of abbreviations

← Older revision		Revision as of 12:15, 11 May 2023
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	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>_dataSource</code>		\| <code>_dataSource</code>
	\| (char) where the data was pulled from during processing: [[https://gitlab.mpi-magdeburg.mpg.de/himpe/unimat unimat]], [[https://sites.google.com/site/rommes/software rommes]], or [[https://modelreduction.org morwiki]]		\| (char) where the data was pulled from during processing: [https://gitlab.mpi-magdeburg.mpg.de/himpe/unimat unimat], [https://sites.google.com/site/rommes/software rommes], or [https://modelreduction.org morwiki]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>_sourceFilename</code>		\| <code>_sourceFilename</code>
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	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| DAE		\| DAE
	\| differential algebraic equation~~; subset of LTI~~		\| [https://en.wikipedia.org/wiki/Differential_algebraic_equation differential algebraic equation]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>daeDiffIndex</code>		\| <code>daeDiffIndex</code>
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	\| <code>directory</code>		\| <code>directory</code>
	\| (char) folder / collection to which a benchmark belongs		\| (char) folder / collection to which a benchmark belongs
			\|- style="vertical-align:middle;"
			\| DoF
			\| [https://en.wikipedia.org/wiki/Degrees_of_Freedom degrees of freedom]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| DSPMR		\| DSPMR
	\| dominant subspace projection model reduction		\| [[Dominant_Subspaces\|dominant subspace projection model reduction]]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>editor</code>		\| <code>editor</code>
	\| (list of char) ORCID(s) of editor(s) who converted data to new .mat format		\| (list of char) ORCID(s) of editor(s) who converted data to new .mat format
			\|- style="vertical-align:middle;"
			\| FEM
			\| [https://en.wikipedia.org/wiki/Finite_Element_Method finite element method]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>filename</code>		\| <code>filename</code>
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	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>isSysSymm</code>		\| <code>isSysSymm</code>
	\| (bool) <math>H(s) = C (sE -A)^{-1} B+D</math> is symmetric; equivalently, the system's Markov parameters are symmetric<br />For a distinction between symmetry and state-space symmetry, see Def 2.1 in [[https://www.sciencedirect.com/science/article/pii/S0167691198000243 this paper]].<br />[[https://doi.org/10.1109/PROC.1983.12688 Another useful source]]		\| (bool) <math>H(s) = C (sE -A)^{-1} B+D</math> is symmetric; equivalently, the system's Markov parameters are symmetric<br />For a distinction between symmetry and state-space symmetry, see Def 2.1 in [https://www.sciencedirect.com/science/article/pii/S0167691198000243 this paper].<br />[https://doi.org/10.1109/PROC.1983.12688 Another useful source]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>license</code>		\| <code>license</code>
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	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| MIMO		\| MIMO
	\| multiple-input, multiple-output		\| [https://en.wikipedia.org/wiki/MIMO multiple-input, multiple-output]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| MOR		\| MOR
	\| model order reduction		\| [https://modelreduction.org/ model order reduction]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>MORWikiLink</code>		\| <code>MORWikiLink</code>
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	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| ODE		\| ODE
	\| ordinary differential equation		\| [https://en.wikipedia.org/wiki/Ordinary_differential_equation ordinary differential equation]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| PDE		\| PDE
	\| partial differential equation		\| [https://en.wikipedia.org/wiki/Partial_differential_equation partial differential equation]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| PMOR		\| PMOR
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	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| RBM		\| RBM
	\| reduced basis ~~model~~		\| [https://pnp.mathematik.uni-stuttgart.de/ians/haasdonk/publications/RBtutorial_preprint_update_with_header.pdf reduced basis method]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| ROM		\| ROM
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	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| SISO		\| SISO
	\| single-input, single-output		\| [https://en.wikipedia.org/wiki/Single-Input_and_Single-Output single-input, single-output]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| SOS		\| SOS
	\| second-order system		\| second-order system
			\|- style="vertical-align:middle;"
			\| SVD
			\| [https://en.wikipedia.org/wiki/Singular_Value_Decomposition singular value decomposition]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>systemClass</code>		\| <code>systemClass</code>

Lund: add state-space symm definition for SOS

2023-05-10T11:20:04Z

add state-space symm definition for SOS

← Older revision		Revision as of 11:20, 10 May 2023
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	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>isStateSpaceSymm</code>		\| <code>isStateSpaceSymm</code>
	\| (bool) <math>A = A^T</math>, <math>C = B^T</math>, <math>E = E^T</math>, <math>D = D^T</math>; trivially implies <code>isSysSymm</code>		\| (bool) state-space symmetric: <math>A = A^T</math>, <math>C = B^T</math>, <math>E = E^T</math>, <math>D = D^T</math>; trivially implies <code>isSysSymm</code>; similarly defined for SOS, but require instead that <math>M = M^T</math>, <math>C_v = 0, C_p = B^T</math>, and <math>K = K^T</math>
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>isSysSymm</code>		\| <code>isSysSymm</code>

Lund: typo

2023-05-10T11:13:27Z

typo

← Older revision		Revision as of 11:13, 10 May 2023
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	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>isStable</code>		\| <code>isStable</code>
	\| (int) numerically computed;<br />0 = no stability<br />1 = asymptotically stable; i.e., all finite eigenvalues of the pencil <math>sE-A</math> (<math>E = I</math>, if not otherwise specified) have negative real part; consequently, the solution of the corresponding LTI <math>~~with~~ u(t) = 0</math> tends to 0 as <math>t \to \infty</math><br />2 = ?<br />3 = ?<br />(other stability definitions added and defined as necessary)		\| (int) numerically computed;<br />0 = no stability<br />1 = asymptotically stable; i.e., all finite eigenvalues of the pencil <math>sE-A</math> (<math>E = I</math>, if not otherwise specified) have negative real part; consequently, the solution of the corresponding LTI with <math>u(t) = 0</math> tends to 0 as <math>t \to \infty</math><br />2 = ?<br />3 = ?<br />(other stability definitions added and defined as necessary)
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>isStateSpaceSymm</code>		\| <code>isStateSpaceSymm</code>

Lund: add description of booleans

2023-05-09T16:00:00Z

add description of booleans

← Older revision		Revision as of 16:00, 9 May 2023
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	This page contains a glossary of terms related to the [[MORB]] collection, benchmark.csv, the [[Search Tool]], and this wiki as a whole.		This page contains a glossary of terms related to the [[MORB]] collection, benchmark.csv, the [[Search Tool]], and this wiki as a whole.

			Note that all boolean fields are really quadruple valued; in addition to 0 (false) and 1 (true), other options include the following:
			* an empty field, indicating a lack of knowledge, e.g., either no attempt has been made to figure out the value, or none of the available methods have been successful in determining the value thus far.
			* NaN, indicating either that the property does not apply or is otherwise impossible to determine

	{\| class="wikitable" style="background-color:#FFF;"		{\| class="wikitable" style="background-color:#FFF;"

Lund: fix typo

2023-05-09T15:54:38Z

fix typo

← Older revision		Revision as of 15:54, 9 May 2023
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	{{preliminary}} <!-- Do not remove -->		{{preliminary}} <!-- Do not remove -->

	This page contains a glossary of terms related to [[MORB]] collection, benchmark.csv, the [[Search Tool]], and this wiki as a whole.		This page contains a glossary of terms related to the [[MORB]] collection, benchmark.csv, the [[Search Tool]], and this wiki as a whole.

	{\| class="wikitable" style="background-color:#FFF;"		{\| class="wikitable" style="background-color:#FFF;"

Lund: initialize glossary

2023-05-09T15:54:21Z

initialize glossary

New page

{{preliminary}} 

This page contains a glossary of terms related to [[MORB]] collection, benchmark.csv, the [[Search Tool]], and this wiki as a whole.

{| class="wikitable" style="background-color:#FFF;"
|- style="font-weight:bold; vertical-align:middle;"
! Abbreviation / Attribute / Term
! Description
|- style="vertical-align:middle;"
| <code>_comments</code>
| (char) internal comments
|- style="vertical-align:middle;"
| <code>_dataSource</code>
| (char) where the data was pulled from during processing: [[https://gitlab.mpi-magdeburg.mpg.de/himpe/unimat unimat]], [[https://sites.google.com/site/rommes/software rommes]], or [[https://modelreduction.org morwiki]]
|- style="vertical-align:middle;"
| <code>_sourceFilename</code>
| (char) filename of data used during processing
|- style="vertical-align:middle;"
| AP
| affine parametric; parameters of any component are linear combinations of fixed matrices
|- style="vertical-align:middle;"
| <code>components</code>
| (char) matrices stored in .mat file; see also [[Models]]
|- style="vertical-align:middle;"
| <code>cond*</code>
| (list of float) the numerically computed ratio between the largest and smallest singular values of the matrix * (including 0); Inf is treated as a float in MATLAB; note that AP systems will have a list of floats, with each entry pertaining to the matrix of the same index
|- style="vertical-align:middle;"
| <code>creator</code>
| (list of char) ORCID(s) of original author(s) or creator(s) of dataset
|- style="vertical-align:middle;"
| DAE
| differential algebraic equation; subset of LTI
|- style="vertical-align:middle;"
| <code>daeDiffIndex</code>
| (int) DAE differentiation index; roughly the number of differentiations required to make a system an ODE
|- style="vertical-align:middle;"
| DEIM
| discrete empirical interpolation method
|- style="vertical-align:middle;"
| <code>directory</code>
| (char) folder / collection to which a benchmark belongs
|- style="vertical-align:middle;"
| DSPMR
| dominant subspace projection model reduction
|- style="vertical-align:middle;"
| <code>editor</code>
| (list of char) ORCID(s) of editor(s) who converted data to new .mat format
|- style="vertical-align:middle;"
| <code>filename</code>
| (char) filename and benchmark ID
|- style="vertical-align:middle;"
| FOM
| full order model
|- style="vertical-align:middle;"
| FOS
| first-order system
|- style="vertical-align:middle;"
| <code>is*CholAble</code>
| (list of bool) the matrix * is symmetric positive definite, i.e., it admits a Cholesky factorization (and is therefore "Cholesky-able"); note that AP systems will have a list of floats, with each entry pertaining to the matrix of the same index
|- style="vertical-align:middle;"
| <code>is*Sparse</code>
| (list of bool) the matrix * is stored in a sparse format; note that AP systems will have a list of floats, with each entry pertaining to the matrix of the same index
|- style="vertical-align:middle;"
| <code>is*Symm</code>
| (list of bool) the matrix is symmetric; note that AP systems will have a list of floats, with each entry pertaining to the matrix of the same index
|- style="vertical-align:middle;"
| <code>isContractive</code>
| (bool) a system that is dissipative w.r.t. <math>s(u(t),y(t)) = ||u(t)||^2 - ||y(t)||^2</math>
|- style="vertical-align:middle;"
| <code>isDAE</code>
| (bool) differential algebraic equation; an LTI DAE has a nonzero, singular E component
|- style="vertical-align:middle;"
| <code>isPassive</code>
| (bool) a system that is dissipative w.r.t s(u(t),y(t)) = u(t)^T y(t)
|- style="vertical-align:middle;"
| <code>isSquare</code>
| (bool) nInputs = nOutputs
|- style="vertical-align:middle;"
| <code>isStable</code>
| (int) numerically computed; 0 = no stability 1 = asymptotically stable; i.e., all finite eigenvalues of the pencil <math>sE-A</math> (<math>E = I</math>, if not otherwise specified) have negative real part; consequently, the solution of the corresponding LTI <math>with u(t) = 0</math> tends to 0 as <math>t \to \infty</math> 2 = ? 3 = ? (other stability definitions added and defined as necessary)
|- style="vertical-align:middle;"
| <code>isStateSpaceSymm</code>
| (bool) <math>A = A^T</math>, <math>C = B^T</math>, <math>E = E^T</math>, <math>D = D^T</math>; trivially implies <code>isSysSymm</code>
|- style="vertical-align:middle;"
| <code>isSysSymm</code>
| (bool) <math>H(s) = C (sE -A)^{-1} B+D</math> is symmetric; equivalently, the system's Markov parameters are symmetric For a distinction between symmetry and state-space symmetry, see Def 2.1 in [[https://www.sciencedirect.com/science/article/pii/S0167691198000243 this paper]]. [[https://doi.org/10.1109/PROC.1983.12688 Another useful source]]
|- style="vertical-align:middle;"
| <code>license</code>
| (char) license associated to data
|- style="vertical-align:middle;"
| LTI
| linear time-invariant
|- style="vertical-align:middle;"
| LTV
| linear time-varying
|- style="vertical-align:middle;"
| MIMO
| multiple-input, multiple-output
|- style="vertical-align:middle;"
| MOR
| model order reduction
|- style="vertical-align:middle;"
| <code>MORWikiLink</code>
| (char) link to MORWiki page
|- style="vertical-align:middle;"
| <code>MORWikiPageName</code>
| (char) fixed page name with plain text description of system in the MORWiki
|- style="vertical-align:middle;"
| <code>nInputs</code>
| (int) number of inputs
|- style="vertical-align:middle;"
| NL
| nonlinear; a nonlinear system depends nonlinearly on <math>x(t)</math>
|- style="vertical-align:middle;"
| <code>nnz*</code>
| (list of int) when the matrix * is sparse, the number of nonzeros; note that AP systems will have a list of floats, with each entry pertaining to the matrix of the same index
|- style="vertical-align:middle;"
| <code>nOutputs</code>
| (int) number of outputs
|- style="vertical-align:middle;"
| <code>nParameters</code>
| (int) maximum number of parameters in a parametric system
|- style="vertical-align:middle;"
| <code>nStates</code>
| (int) number of states
|- style="vertical-align:middle;"
| <code>nUnstabPoles</code>
| (int) the number of poles with nonnegative real part, computed numerically
|- style="vertical-align:middle;"
| ODE
| ordinary differential equation
|- style="vertical-align:middle;"
| PDE
| partial differential equation
|- style="vertical-align:middle;"
| PMOR
| parametric model order reduction
|- style="vertical-align:middle;"
| POD
| proper orthogonal decomposition
|- style="vertical-align:middle;"
| QBS
| quadratic bilinear system
|- style="vertical-align:middle;"
| RBM
| reduced basis model
|- style="vertical-align:middle;"
| ROM
| reduced order model
|- style="vertical-align:middle;"
| SISO
| single-input, single-output
|- style="vertical-align:middle;"
| SOS
| second-order system
|- style="vertical-align:middle;"
| <code>systemClass</code>
| (char) model realization; see also [[Models]]
|- style="vertical-align:middle;"
| <code>zenodoDOI</code>
| (char) zenodo DOI (not the full URL!)
|}

← Older revision		Revision as of 15:25, 2 April 2024
Line 1:		Line 1:
	{{preliminary}} <!-- Do not remove -->		{{preliminary}} <!-- Do not remove -->

	This page contains a glossary of terms related to the [[MORB]] ~~collection, benchmark.csv~~, the [[Search Tool]], and this wiki as a whole.		This page contains a glossary of terms related to the [[MORB]] database, the [[Search Tool]], and this wiki as a whole.

	Note that all boolean fields are really quadruple valued; in addition to 0 (false) and 1 (true), other options include the following:		Note that all boolean fields are really quadruple valued; in addition to 0 (false) and 1 (true), other options include the following:
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	! Description		! Description
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>~~_comments~~</code>		\| <code>comments</code>
	\| (char) internal comments		\| (char) internal comments
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>~~_dataSource~~</code>		\| <code>dataSource</code>
	\| (char) where the data was pulled from during processing: [https://gitlab.mpi-magdeburg.mpg.de/himpe/unimat unimat], [https://sites.google.com/site/rommes/software rommes], or [https://modelreduction.org morwiki]		\| (char) where the data was pulled from during processing: [https://gitlab.mpi-magdeburg.mpg.de/himpe/unimat unimat], [https://sites.google.com/site/rommes/software rommes], or [https://modelreduction.org morwiki]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>~~_sourceFilename~~</code>		\| <code>sourceFilename</code>
	\| (char) filename of data used during processing		\| (char) filename of data used during processing
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
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	\| (list of float) the numerically computed ratio between the largest and smallest singular values of the matrix * (including 0); Inf is treated as a float in MATLAB; note that AP systems will have a list of floats, with each entry pertaining to the matrix of the same index		\| (list of float) the numerically computed ratio between the largest and smallest singular values of the matrix * (including 0); Inf is treated as a float in MATLAB; note that AP systems will have a list of floats, with each entry pertaining to the matrix of the same index
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>~~creator~~</code>		\| <code>benchmarkCreator</code>
	\| (list of char) ORCID(s) of original author(s) or creator(s) of dataset		\| (list of char) ORCID(s) of original author(s) or creator(s) of dataset
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
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	\| discrete empirical interpolation method		\| discrete empirical interpolation method
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>~~directory~~</code>		\| <code>category</code>
	\| (char) folder / collection to which a benchmark belongs		\| (char) folder / collection to which a benchmark belongs
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
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	\| [[Dominant_Subspaces\|dominant subspace projection model reduction]]		\| [[Dominant_Subspaces\|dominant subspace projection model reduction]]
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"
	\| <code>~~editor~~</code>		\| <code>dataEditor</code>
	\| (list of char) ORCID(s) of editor(s) who converted data to new .mat format		\| (list of char) ORCID(s) of editor(s) who converted data to new .mat format
	\|- style="vertical-align:middle;"		\|- style="vertical-align:middle;"