Difference between revisions of "Documentation:HDF5 schema"
From ALPS
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| − | Some results that do not depend on the individual states targeted for is instead at /simulation/results | + | Some results that do not depend on the individual states targeted for is instead at /simulation/results with a array value containing the results for the individual iterations. |
== Data Attributes == | == Data Attributes == | ||
Latest revision as of 00:29, 14 August 2011
Contents
The HDF5 schema
Observables within ALPS are written according to a specific hierarchical naming convention which is listed below.
Parameters
All the parameters specified in the input parameter files are stored in:
| /parameters/PARAMETERNAME | : parameter value |
Monte Carlo Data
Each observable with a given OBSERVABLENAME has the following quantities stored in the hdf5-outputfile:
| /simulation/results/OBSERVABLENAME/count | : number of measurements |
| /simulation/results/OBSERVABLENAME/mean/value | : mean value of the observable |
| /simulation/results/OBSERVABLENAME/mean/error | : error of the observable |
| /simulation/results/OBSERVABLENAME/mean/error_convergence | : error convergence of the observable |
| /simulation/results/OBSERVABLENAME/variance/value | : variance of the observable |
| /simulation/results/OBSERVABLENAME/tau/value | : autocorrelation time of the observable |
| /simulation/results/OBSERVABLENAME/jacknife/data | : jacknife data of the observable |
| /simulation/results/OBSERVABLENAME/timeseries/data | : timeseries of the mean of the observable |
| /simulation/results/OBSERVABLENAME/timeseries/data2 | : timeseries of the mean of the observable squared |
| /simulation/results/OBSERVABLENAME/timeseries/partialbin | : mean of the observable in the partialbin |
| /simulation/results/OBSERVABLENAME/timeseries/partialbin2 | : mean of the observable squared in the partialbin |
| /simulation/results/OBSERVABLENAME/timeseries/logbinning | : mean of the observable in the logbin |
| /simulation/results/OBSERVABLENAME/timeseries/logbinning2 | : mean of the observable squared in the logbin |
| /simulation/results/OBSERVABLENAME/timeseries/logbinning_last | : mean of the observable in the last logbin |
| /simulation/results/OBSERVABLENAME/timeseries/logbinning_count | : depth of the logbinning tree |
To be deprecated? :
| /simulation/results/OBSERVABLENAME/sum | : mean of the observable |
| /simulation/results/OBSERVABLENAME/sum2 | : mean of the observable squared |
In the non-aggregated hdf5-files (with the file name parm.taski.out.runj.h5) the path to the data stored is of the form: /simulation/realizations/NUMBER/clones/MPIPROCESSNUMBER/results/OBSERVABLENAME/... , where the system realization (e.g. disorder realization) is enumerated with NUMBER and the clone with the mpi process number MPIPROCESSNUMBER .
ED or DMRG Data
For observables obtained from an ED or DMRG simulation the data is stored at the following paths within the hdf5-output file:
| /spectrum/energies | : the energy eigenvalues |
| /spectrum/sectors/NUMBER/energies | : the energy values for a specific sector |
| /spectrum/sectors/NUMBER/quantumnumbers/QUANTUMNUMBERNAME | : the quantum number value of QUANTUMNUMBERNAME for a specific sector |
| /spectrum/results/OBSERVABLENAME/mean/value | : expectation value of the observable |
| /spectrum/results/OBSERVABLENAME/labels | : labels for the x-coordinate of the observable |
| /spectrum/iteration/NUMBER/results/OBSERVABLENAME/mean/value | : expectation value of the observable for a specific iteration (DMRG only) |
| /spectrum/iteration/NUMBER/results/OBSERVABLENAME/labels | : labels for the x-coordinate of the observable |
Some results that do not depend on the individual states targeted for is instead at /simulation/results with a array value containing the results for the individual iterations.
Data Attributes
- jacknife/data has the attribute:
| binningtype | : the binning scheme, schemes are: linear or logarithmic |
- timeseries/data and timeseries/data2 have the attributes:
| maxbinnum | : the maximum number of bins kept |
| minbinsize | : minimal number of measurements per bin |
| binsize | : number of measurements per bin |
| binningtype | : the binning scheme, schemes are: linear or logarithmic |
| discard (deprecated) | : bins discarded |
- /timeseries/partialbin and /timeseries/partialbin2 have the attribute:
| count | : binsize of the partialbin |
- timeseries/logbinning, timeseries/logbinning2, timeseries/logbinning_lastbin and timeseries/logbinning_counts have the attribute:
| binningtype | : the binning scheme, schemes are: linear or logarithmic |
- A HistogramObservable has the attributes:
| size | : number of entries in the histogram |
| min | : minimal x-value recordable in the histogram |
| max | : maximal x-value recordable in the histogram |
| stepsize | : the width of the interval dx in the histogram |
- A SignedObservable has the attribute:
| sign | : observable name of the sign observable, default: Sign |
- Observables can have the attributes:
| cannotrebin | : whether or not rebinning is possible, i.e. whether or not a nonlinear transformation has been performed |
| changed (deprecated) | : whether or not the data has been transformed |
| nonlinearoperations (deprecated) | : whether or not a nonlinear operation has been performed on the data |
