Change Log

[7.000-beta-27]

Added

• map-rows to map each row and produce new columns
• rows can return sequence of vectors (:as-vecs)

Fixed

• balanced k-fold partitioning as proposed in #92 by @behrica

[7.000-beta-16]

Updated to TMD v7

Differences:

• the order of columns is persisted in more cases
• the order of groups in grouped dataset can be random

[6.103.1]

Added

• doc strings for every funcitons, #87, #88
• aggregate-columns should default to all columns when called without a column selector #91
• create functions for packing / unpacking columns to arrays #82

Changed

• [breaking] when dataset file do not exists throw an exception #84, #85

[6.103]

Clojure upgraded to 1.11.1

Added

• separate-column infers column names when function is used and target-columns is nil, #78

Changed

• [breaking][minor] separate-column repleces source column with target on every case

[6.102]

Fixed

• replace clojure.core/pmap with dtype-next version (related to #325)

[6.101]

Added

get-entry introduced

[6.094.1]

Fixed

• [#77] anti-join and semi-join bugs when tables contain missing values

[6.094]

Added

• crosstab - cross tabulation
• pivot->longer :coerce-to-number option added

Changed

• [breaking] pivot->wider no longer coerces column names to strings, it's up to user

Fixed

• predicates should behave as in Clojure (discussion)

[6.090]

TMD version bump

Changed

[breaking]

replace-missing up/down strategies clarified. :down is replaced by :downup and :up is replaced by :updown. :down and :up work only in one direction now.

https://github.com/techascent/tech.ml.dataset/issues/305

[6.088.1]

Fixed

• Wrong way of selecting columns for joins (shouldn't be a set). https://clojurians.zulipchat.com/#narrow/stream/151924-data-science/topic/complete.20ala.20R/near/286277344

[6.088]

Added

• data frame term in the title of docs (discussion)
• joins can accept different names for left/right datasets
• cross-join, expand and complete introduced

Changed

• removed setting *warn-on-reflection*
• [breaking] creation of singleton dataset adds an error message as a column by default (discussion)

[6.076]

Version bump

Added

• docstring for unroll and fold-by by @holyjak (#60 and #61)

[6.051]

Fixed

• [#58] - editor friendly api file

[6.031]

Fixed

• #57 - InputStream should be dispatched first (the flow now: tries to create a dataset and it fails packs an objet as a singleton

Changed

• select-rows accepts IFn for row selection.
• [breaking] #54, #56 - pipeline namespace is stripped, all functions are moved to metamorph library. This is temporary solution before removing this namespace completely. Pipelined versions of functions will be moved to metamorph as well later.

[6.025]

Added

• [#49] added docstring to add-column

Fixed

• [#53] summary prefix ignored for aggregate (when fn[ds] is passed)

[6.023]

Added

• Documented columns / rows functions PR52
• Reference to original to lifted functions metadata for pipelines PR51

Changed

• alias for api functions in reference (was: api, is: tc)

[6.012]

Fixed

• replace-missing on grouped dataset has swapped arguments

[6.006]

Fixed

• update-columns on grouped dataset

[6.002]

Changed

• [#43] Align with TMD for dataset creation from a map of sequences.
• [breaking] creation from tensor is :as-rows now

[6.00-beta-16]

Changed

• [#42] [breaking] add-column default strategy is :strict now.

[6.00-beta-10]

Fixed

• [#41] dataset name not set on tensor path

[6.00-beta-7]

TMD upgrade, no changes in TC

[5.17]

TMD upgrade

Fixed

• [#36] reorder-columns on empty dataset returns nil

[5.11]

Fixed

• aggregate-columns didn't keep column order (#35)

[5.05.1]

Added

• pipeline functions have doc copied from original ones

[5.05]

Added

• split can turn off shuffling now (:shuffle? option)
• split :holdouts - sequence of consecutive holdouts

[5.04]

tech.ml.dataset version bump, this introduces the change of the order of the groups after group-by operation

[5.02]

Added

• split :holdout supports any number of splits (minimum 2) [#28]
• split supports split-names to provide custom names for subdatasets
• concat and concat-copying are working with grouped datasets

Fixed

• kfold split failed on small number of rows (due to partition-all behaviour

[5.01]

Added

• split->seq to return train/test splits as a sequence or datasets or as map of sequences for grouped datasets

Changed

• [breaking] tablecloth.pipeline returns a map with dataset under :metamorph/data key (see metamorph)
• [breaking] split returns now a dataset or grouped dataset with two new columns indicating train/test and split id. See split->seq for previous behaviour.

[5.00-beta-29.1]

Added

• without-grouping-> threading macro which allows operations on grouping dataset treated as a regular one.

Changed

• group-by accepts any java.util.Map for a collection of indexes (use LinkedHashMap to persist an order)
• some tablecloth.api.group-by functions moved to tablecloth.api.utils, no changes to API

[5.00-beta-29]

Changed

• add-or-replace-column(s) replaced by add-column(s) (add-or-replace-column(s) is marked as deprecated) (#16)

Fixed

• mark-as-group wasn't visible in API (#18)
• map-columns didn't propagate new-type for grouped case (#20)
• broken links (#14) in readme

[5.00-beta-28]

Added

• let-dataset - to simulate tibble from R

Fixed

• Adding a column to an empty dataset returned empty dataset

[5.00-beta-27]

Changed

• re-implementation of numerical arrays path dataset creation

[5.00-beta-25]

Added

• rows and columns new result: :as-double-arrays - convert rows to 2d double array
• dataset can be created from numerical arrays discusson

Fixed

• column from single value should create valid datatype (#10)

[5.00-beta-21a]

Added

• tablecloth.pipeline for pipeline operations

[5.00-beta-21]

Added

• concat-copying exposed.
• split function for splitting into train-test pairs with :kfold, :bootstrap, :loo and holdout strategies + stratified versions
• replace-missing with new strategy :midpoint

[5.00-beta-5a]

Fixed

• column names should keep order for provided names (#9)

[5.00-beta-5]

t.m.d update

[5.00-beta-3]

t.m.d update

Changed

• contribution guide in readme

[5.00-beta-2]

t.m.d update

Changed

• write-nippy! and read-nippy are deprecated, replaced by write! and dataset

[5.0-SNAPSHOT]

tech.ml.dataset version 5.0-alpha*

Added

• map-columns accepts optional target datatype
• ds/column->dataset functionality introduced in separate-column
• more datatypes included for conversion (:text among others)

Changed

• write-csv! replaced by write! (write-csv! is marked as deprecated)
• info field :size is replaced by :n-elems
• [breaking] separate-column 3-arity version accepts separator instead target-columns now

Fixed

• do not skip 1-row DS when folding
• do not attempt to fold empty dataset

[4.04]

tech.ml.dataset version 4.04

Added

• tests: dataset

Changed

• version number to match t.m.dataset version
• documentation:
  • gfm renderer for markdown

Fixed

• code block language alignment fix in css

[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