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sparta v1.0.1 (2022-11-22)

• Stable release due to submission in Journal of Statistical Software

sparta v0.8.4 (2022-04-11)

• Vignette is now included.

sparta v0.8.3.1 (2022-03-20)

• Hotfix in function is_scalar which is an issue in package jti

sparta v0.8.3 (2022-02-07)

• normalize now returns 1 if applied to a numeric

sparta v0.8.2 (2021-11-24)

• Bug fixed when mult/div two unities
• Bug fixed when calling div(x,y) with x being a scalar. The result was the same as div(y,x).
• numerics can now be marginalized. The result is the numeric itself.

sparta v0.8.1 (2021-07-05)

• as_sparta.data.frame does no longer convert to an array first (expensive) and is therfore much more efficient now.

sparta v0.8.0 (2021-06-18)

• marg is now more efficient when y is character(0)
• A sparta_unity_struct can now be sliced if drop TRUE=.
• Better argument checks in slice
• mult and div is now faster when one of the tables is a subtale of the other. This is especially useful in connection with Bayesian networks and the Junction Tree Algorithm.
• sum, normalize, get_vals and vals now works as expected on sparta_unity class
• New functions: sparta_rank and table_size
• as_array now works for sparta_unity

sparta v0.7.3 (2021-04-22)

• Bug fixed when argument drop is TRUE in slice for tables that should reduce to one row.

sparta v0.7.2 (2021-04-03)

• The new print method turned out to cause problems in the long run. Printing a sparse table now prints columns as rows again with the corresponding value attached to the right.
• marginalizing is much more memory efficient now. Especially for massive tables.

sparta v0.7.1.0 (2021-03-01)

• Multiplication of unity tables was not correct due to the new rank argument. The fix was to multiply the rank of the tables.
• Print method changed to print cells as columns which is also how the sparse tables are represented under the hood.
• New functions (see documentation):
  • sparsity: determines the ratio of non-zero cells and the size of the statespace.
  • as_df: convert a sparse table to a data.frame. Either with or without zero cells
  • get_values: The same as the existing vals

sparta v0.7.0 (2020-12-16)

• unity tables now have a rank attribute which is just the unique value that all cells have. Because of this, a unity table can now be multiplied with a scalar. And regular sparta tables can be multiplied with unities of different rank. As a consequence, unities can now be marginalized also.

• New function equiv to test if two sparta objects are identical

• Fixed a bug when assigning dimnames to the result of multiplication

sparta v0.6.1 (2020-11-24)

• marginalization is now faster due to some refactoring

sparta v0.6.0 (2020-11-09)

• Prevent print from printing dimension names
• A bug, due to wrong sorting, that manifested in both marg, slice, mult and div has been fixed. These functions were prone to errors when the number of variables exceed 10.
• It is now possible to multiply and divide sparta tables with a scalar where the scalar can be either of the two inputs. Prior to v0.6.0 the scalar had to be the second argument.

sparta v0.5.0 (2020-10-08)

• First release

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.