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Change Log

[1.0.0-pre-alpha9]

tech.ml.dataset version 4.03

Added

  • some operations on grouped dataset can be parallel (parallel? option set to true). These are: aggregate, unique-by, order-by, join-columns, separate-columns, ungroup

Fixed

  • #2 - docs typo
  • #3 - recover datatypes after ungrouping

Changed

  • aggregation uses now in-place ungrouping which is much faster

[1.0.0-pre-alpha8]

tech.ml.dataset version 3.06

Added

  • fill-range-replace to inject data to make continuous seqence in column
  • write-nippy! and read-nippy

[1.0.0-pre-alpha7]

tech.ml.dataset version 2.13

Added

  • replace-missing new strategies: :mid and :lerp, working also for dates.

Changed

  • [breaking] replace-missing has different conctract and default strategy :mid. value argument is the last argument now.
  • [breaking] replace-missing :up and :down strategies, when value is nil fills border missing values with nearest value.

[1.0.0-pre-alpha6]

tech.ml.dataset version 2.06

Added

  • asof-join added

[1.0.0-pre-alpha4]

Added

  • reshape tests
  • pivot->wider accepts :drop-missing? option (default: true)

Changed

  • pivot->wider drops missing rows by default
  • pivto->wider order of concatenated column names is reversed (first: colnames, last: value), was opposite.
  • pivot->longer :splitter accepts string used for splitting column name

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