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Package update 0.1.9 ->
0.2.0
New functions:
- There are two new index functions: dikhanov
(bilateral formula) and chdikhanov (chain index
formula).
New dataset:
- The data_DOWN_UP_SIZED (artficial) scanner dataset
on the sale of coffee products (the corresponding old one,
i.e. dataDOWNSIZED, has been deleted);
Improvements:
- The shrinkflation function has been extended (new
parameters, new types of downsizing/upsizing);
Bag fixed
- The *compare_to_target** function has been fixed and now it allows
for comparison of only two indices.
Package update 0.1.7 ->
0.1.8
Improvements:
- New references to some of multilateral methods have been added
(e.g. GEKS-AGI, GEKS-AQU methods)
- The final index function has been improved. Now it
skips data frames with zero rows.
Package update 0.1.6 ->
0.1.7
New functions:
- New functions for the calculation of the Montgomery indicators,
i.e. montgomery and mmontgomery for
the bilateral and multilateral variant, respectively).
Improvements:
- The compare_indices_jk function obtained new
functionality (there are new elements in the resulting list for
comparing pseudovalues from jackknife method).
Package update 0.1.5 ->
0.1.6
Improvements:
- The elasticity and thus
elasticity_fig are much faster now.
Bug fixes:
- An example in elasticity_fig has been corrected
(there is no error now). The price_indices function has been
corrected due to the lloyd-moulton sub-function.
Package update 0.1.4 ->
0.1.5
New functions:
- New functions for price imputations (data_imputing) and for
detecting new and disappearing products (products and
products_fig).
Improvements:
- The data_preparing function has now two additional
parameters which allow to consider zero prices and zero quantities.
- New methods for elasticity and
elasticity_fig functions have been added.
Bug fixes:
- a new parameter has beed added to the function ‘price_indices’
(names). It allows to compare e.g. the same splice multilateral
index but for many different splicing methods (their names can be
distinguished).
- The geksj function has been corrected for the case when we
observe large number of decreasing prices.
Package update 0.1.3 ->
0.1.4
New functions
- New functions for bennet price and quantity indicators have been
added (bennet and mbennet).
- New function for comparison of price indices by using the jackknife
method has been added (compare_indices_jk).
Bug fixes
- A new parameter has beed added to the function ‘price_indices’
(names). It allows to compare e.g. the same splice multilateral
index but for many different splicing methods (their names can be
distinguished).
- The geksj function has been corrected for the case when we
observe large number of decreasing prices.
- Problems with examples have been deleted (‘donttest{}’ formula is
used)
Package update 0.1.2 ->
0.1.3
Bug fixes
- Graphical result of the compare_indices_list
function has been corrected (a label concerning the X-axis is now named
‘date’)
- References have been updated in the case of the generate
function.
- A wrong example concerning the geksgaqi_splice function has
been deleted.
Package update 0.1.1 ->
0.1.2
New functions:
- New functions added: a) bilateral methods - value_index,
unit_value_index, QMp, IQMp, QMq; b)
chain indices: chQMp, chIQMp, chQMq; c)
multilateral methods: gekslm, geksqm,geksiqm,
utpd + their extensions (splice, FMW, FBEW). New function for
generating artficial scanner datasets (generate_CES). Moreover:
new (faster) function price_indices, new functions for price
comparisons: compare_indices_df and
compare_indices_list (old functions: compare_indices
and compare_final_indices were removed). Rebuilt function
final_index (old function final_index2 was removed).
Rebuilt functions: elasticity and elasticity_fig (old
functions elasticity2 and elasticity_fig2 were
removed).
Improvements
- Improved speed of data_filtering and
data_matching functions (data_matching
is now based on the reclin2 package instead of
reclin).
- Improved speed of multilateral index functions:
geks, wgeks, geksj,
geksw, geksl, geksgl,
wgeksl and wgeksgl.
Package update 0.0.9 ->
0.1.1
New function
- One new function (expenditures) has been added (faster
version of sales)
Changes
- System of weights in the TPD index has been changed. Now it
corresponds to the system of weights used in “HICP Guide for
Multilateral Methods”.
Improvements
Improved the speed of operation of all functions for price
indices.
Package update 0.0.8 ->
0.0.9
New functions
- 4 new functions for calculating elasticity of substitution have been
added: elasticity, elasticity2,
elasticity_fig, elasticity2_fig.
Package update 0.0.7 ->
0.0.8
New fucntion
- a new internal function has been added (conversion). This
function provides integer representation of the given text string.
Improvements
- the following functions have been improved by changing a method for
dealing with categorical variables: model_classification,
data_classifying.
- An existing artificial data set (dataCOICOP) has been change into
the real scanner data set
- Some new references have been added (e.g. for GEKS-L,
GEKS-GL, GEKS-AQI, GEKS-AQU functions).
- A README file has been improved by adding some new example with
using ML methods for product classifiction.
Package update 0.0.6 ->
0.0.7
New function
- a new function which allows to compare indices with a target price
index was added (compare_to_target)
Improvements
- some function descriptions have been changed or improved
- set of files.R has been reorganized
- README file and vignette have been extended
Package update 0.0.5 ->
0.0.6
New function
- 37 new functions (concerning the WGEKS,
GEKSL, WGEKSL,
GEKS-AQU, WGEKS-AQU,
GEKS-AQI, WGEKS-AQI,
GEKS-GAQI, WGEKS-GAQI indices and its
extensions, a new function compare_distances)
Bug fixes
- 6 small bugs fixed (they concern chlowe,
chgeolowe, chyoung,
chgeoyoung, chhybrid and
chgeohybrid functions)
- data set on milk was corrected and modified
Data set modification
- A data set on milk has beed modified (one new product has beed
added) *
Function modification
- A function matched_fig has been extended by adding
a new parameter
Package update 0.0.4 ->
0.0.5
New function
- 1 new function (data_aggregating) has beed added.
This function aggregates the user’s data frame over time and/or over
outlets (retIDs)
New data set
- 1 new artificial data set has been added (dataAGGR) to
demonstrate the utility of the data_aggregation
function.
Bug fixes
- 2 bugs fixed (they concern final_index and
final_index2 functions)
Package update 0.0.3 ->
0.0.4
New function
- 1 new function (data_check) has beed added. This
function checks if the user’s data frame is suitable for further price
index calculation.
Bug fixes
- 2 bugs fixed (they concern data_norm and
unit functions)
- corrected descriptions (e.g. model_classification
function)
Package update 0.0.2 ->
0.0.3
Bug fixes
- Function data_norm (which is crucial for product
unit standarization) has beed corrected (the previous version of that
function duplicated rows in data frame)
Package update 0.0.1 ->
0.0.2
Improvements
Function data_matching() has been modified and
now it is much more faster,
Examples concerning chain indices have been
modified and now they are less time-consuming while checking,
New data set is added (dataU)
New functions for scanner data processing are added
(data_unit and data_norm)
Bug fixes
Access to HASP and WISP methods has been added in the
price_index() function and now
price_indices() works correctly,
The default value and the meaning of the
sensitivity parameter in
data_preparing() and
model_classification() functions have been
corrected.
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.