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Project description
Brightway2 parameters
=====================
Library for storing, validating, and calculating with parameters. Designed to work with the Brightway2 life cycle assessment framework, but should work for other use cases.
Compatible with Python 2 & 3.
Approach:
- Parameters are defined in a dataset: ds['parameters']
- No global parameters
- No inheritance between datasets
Data format:
- ds['parameters'] is a list of parameters
- 'name' field (must be unique)
- 'name' can be generated automatically on import
- 'name' can't copy function names (long list)
- optional 'formula' field
- 'formula' must use numpy (i.e. array) compatible functions
- Parameters have normal uncertainty fields
- An exchange can reference a parameter name (but not a formula)
- No uncertainty if referencing a parameter
Processing:
- ParameterSet object
- New asteval instance for each parameter set
- Need to get order of parameters to be processed
- MC needs an efficient way to insert values into various RNG output arrays
- Do we need a new unique ID per exchange? Exchange input/output not guaranteed unique
- Or somehow do something tricky during processing step?
- Rewrite main MonteCarlo class to have view into PV lca?
=====================
Library for storing, validating, and calculating with parameters. Designed to work with the Brightway2 life cycle assessment framework, but should work for other use cases.
Compatible with Python 2 & 3.
Approach:
- Parameters are defined in a dataset: ds['parameters']
- No global parameters
- No inheritance between datasets
Data format:
- ds['parameters'] is a list of parameters
- 'name' field (must be unique)
- 'name' can be generated automatically on import
- 'name' can't copy function names (long list)
- optional 'formula' field
- 'formula' must use numpy (i.e. array) compatible functions
- Parameters have normal uncertainty fields
- An exchange can reference a parameter name (but not a formula)
- No uncertainty if referencing a parameter
Processing:
- ParameterSet object
- New asteval instance for each parameter set
- Need to get order of parameters to be processed
- MC needs an efficient way to insert values into various RNG output arrays
- Do we need a new unique ID per exchange? Exchange input/output not guaranteed unique
- Or somehow do something tricky during processing step?
- Rewrite main MonteCarlo class to have view into PV lca?
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