chainladder 0.4.9

Bugfix

• quick patch for Pipeline

chainladder 0.4.8

Bug fixes:

• Fixed an inappropriate mutation in the Benktander estimator when calls to predict are made
• Allow for sample_weight argument to be directly passed to a Pipeline

chainladder 0.4.7

Enhancements:

• Added broadcast_axis for better BootstrapODPSample support

chainladder 0.4.6

Bug fixes:

• Eliminated a side-effect in Development when using drop
• Improved dropping capabilities of BootstrapODPSample

chainladder 0.4.5

Bug Fixes:

• Fixed TailCurve shape misaligned #57
• Fixed triangle json serializers to include all data necessary to recreate triangle
• Fixed various edge case issues when len(development) == 1
• Fixed MackChainladder assymentric triangle support (e.g. OYDQ)
• Fixed MunichAdjustment assymentric triangle support (e.g. OYDQ)
• Fixed datetime flexibility on dataframe ingestion into triangle

Enhancements:

• aligned append method with pandas

Other:

• Moved excel exhibit functionality to a separate xlcomose package.

chainladder 0.4.4

Bug fixes:

• patched a defect in Triangle.grain()
• patched a defect in exhibits.py pertaining to titles

chainladder 0.4.3

Bug Fix:

• Fixed issues in asymmetric triangles

Enhancement:

• Replaced Exhibit API with Row, Column, Tabs, and DataFrame

chainladder 0.4.2

Bug Fixes:

Minor release to improved commutative properties of triangle functions (grain, val_to_dev, dev_to_val, cum_to_incr, incr_to_cum, latest_diagonal) for all types of triangles (development triangles, valuation triangles, complerte triangles)

chainladder 0.4.1

Bug fix

• patch to asymmetric LDF fix in release 0.4.0

Enhancement

• Added Triangle.dropna() method that allows shaving off origins/development vectors that are all 0/NA

chainladder 0.4.0

Enhancements:

• Added better datetime management when instantiating a triangle
• Added json serializers for Triangle as well as the estimators and Pipeline. These can be accessed with the to_json method and cl.read_json
• Added DevelopmentConstant estimator that takes LDF or CDF patterns as a dictionary instead of calculating from a triangle. This is useful for incorporating industry patterns into an analysis
• General improved functionality for malformed triangles
• improved memory management by eliminating unnecessary usage of deepcopy

Bug Fixes:

• Fixed an issue where LDFs were calculated incorrectly for asymmetric triangles
• Fixed a bug where slicers weren't working properly after particular mutations (e.g. adding a new column)
• Arithmetic on triangles with different origin ranges will now take the union of the origin periods. Previously the intersection was taken.