Econ-ark

Release Date: 05-18-2019

Major Changes
- Fixes multithreading problems by using Parallels(backend='multiprocessing'). ([287](https://github.com/econ-ark/HARK/pull/287))
- Fixes bug caused by misapplication of check_conditions. ([284](https://github.com/econ-ark/HARK/pull/284))
- Adds functions to calculate quadrature nodes and weights for numerically evaluating expectations in the presence of (log-)normally distributed random variables. ([258](https://github.com/econ-ark/HARK/pull/258))

Minor Changes
- Adds method decorator which validates that arguments passed in are not empty. ([282](https://github.com/econ-ark/HARK/pull/282)
- Lints a variety of files. These PRs include some additional/related minor changes, like replacing an exec function, removing some lambdas, adding some files to .gitignore, etc. ([274](https://github.com/econ-ark/HARK/pull/274), [276](https://github.com/econ-ark/HARK/pull/276), [277](https://github.com/econ-ark/HARK/pull/277), [278](https://github.com/econ-ark/HARK/pull/278), [281](https://github.com/econ-ark/HARK/pull/281))
- Adds vim swp files to gitignore. ([269](https://github.com/econ-ark/HARK/pull/269))
- Adds version dunder in init. ([265](https://github.com/econ-ark/HARK/pull/265))
- Adds flake8 to requirements.txt and config. ([261](https://github.com/econ-ark/HARK/pull/261))
- Adds some unit tests for IndShockConsumerType. ([256](https://github.com/econ-ark/HARK/pull/256))

Release Date: 04-18-2019

Major Changes

None

Minor Changes

* Fix verbosity check in ConsIndShockModel. ([250](https://github.com/econ-ark/HARK/pull/250))

Other Changes

None

Release Date: 04-12-2019

Major Changes

* Adds [tools](https://github.com/econ-ark/HARK/blob/master/HARK/dcegm.py) to solve problems that arise from the interaction of discrete and continuous variables, using the [DCEGM](https://github.com/econ-ark/DemARK/blob/master/notebooks/DCEGM-Upper-Envelope.ipynb) method of [Iskhakov et al.](https://onlinelibrary.wiley.com/doi/abs/10.3982/QE643), who apply the their discrete-continuous solution algorithm to the problem of optimal endogenous retirement; their results are replicated using our new tool [here](https://github.com/econ-ark/REMARK/blob/master/REMARKs/EndogenousRetirement/Endogenous-Retirement.ipynb). ([226](https://github.com/econ-ark/HARK/pull/226))
* Parameters of ConsAggShockModel.CobbDouglasEconomy.updateAFunc and ConsAggShockModel.CobbDouglasMarkovEconomy.updateAFunc that govern damping and the number of discarded 'burn-in' periods were previously hardcoded, now proper instance-level parameters. ([244](https://github.com/econ-ark/HARK/pull/244))
* Improve accuracy and performance of functions for evaluating the integrated value function and conditional choice probabilities for models with extreme value type I taste shocks. ([242](https://github.com/econ-ark/HARK/pull/242))
* Add calcLogSum, calcChoiceProbs, calcLogSumChoiceProbs to HARK.interpolation. ([209](https://github.com/econ-ark/HARK/pull/209), [217](https://github.com/econ-ark/HARK/pull/217))
* Create tool to produce an example "template" of a REMARK based on SolvingMicroDSOPs. ([176](https://github.com/econ-ark/HARK/pull/176))

Minor Changes

* Moved old utilities tests. ([245](https://github.com/econ-ark/HARK/pull/245))
* Deleted old files related to "cstwMPCold". ([239](https://github.com/econ-ark/HARK/pull/239))
* Set numpy floating point error level to ignore. ([238](https://github.com/econ-ark/HARK/pull/238))
* Fixed miscellaneous imports. ([212](https://github.com/econ-ark/HARK/pull/212), [224](https://github.com/econ-ark/HARK/pull/224), [225](https://github.com/econ-ark/HARK/pull/225))
* Improve the tests of buffer stock model impatience conditions in IndShockConsumerType. ([219](https://github.com/econ-ark/HARK/pull/219))
* Add basic support for Travis continuous integration testing. ([208](https://github.com/econ-ark/HARK/pull/208))
* Add SciPy to requirements.txt. ([207](https://github.com/econ-ark/HARK/pull/207))
* Fix indexing bug in bilinear interpolation. ([194](https://github.com/econ-ark/HARK/pull/194))
* Update the build process to handle Python 2 and 3 compatibility. ([172](https://github.com/econ-ark/HARK/pull/172))
* Add MPCnow attribute to ConsGenIncProcessModel. ([170](https://github.com/econ-ark/HARK/pull/170))
* All standalone demo files have been removed. The content that was in these files can now be found in similarly named Jupyter notebooks in the DEMARK repository. Some of these notebooks are also linked from econ-ark.org. ([229](https://github.com/econ-ark/HARK/pull/229), [243](https://github.com/econ-ark/HARK/pull/243))

Other Notes

* Not all changes from 0.9.1 may be listed in these release notes. If you are having trouble addressing a breaking change, please reach out to us.


pre
This is a pre-release intended to provide a citeable package for papers which are already using HARK.