Distance Measure Based Judgment and Learning

Implements various decision support tools related to the Econometrics & Technometrics. Subroutines include correlation reliability test, Mahalanobis distance measure for outlier detection, combinatorial search (all possible subset regression), non-parametric efficiency analysis measures: DDF (directional distance function), DEA (data envelopment analysis), HDF (hyperbolic distance function), SBM (slack-based measure), and SF (shortage function), benchmarking, Malmquist productivity analysis, risk analysis, technology adoption model, new product target setting, etc.


News

=================================================================================== DJL v2.9.2 (Release date: 2019-03-07)

Code>

  1. roc.sf : bug fixed for only one DMU presenting local RoC
  2. roc.hdf: bug fixed for only one DMU presenting local RoC

=================================================================================== DJL v2.9.1 (Release date: 2019-02-11)

Code>

  1. target.spec.dea: bug fixed - ifelse vs if without else - caused by R update

=================================================================================== DJL v2.9 (Release date: 2019-02-06)

Code>

  1. roc.dea: bug fixed for only one DMU presenting local RoC
  2. target.spec.dea: NULL as a default value for wv (scaling factor will be applied)

Man>

  1. target.spec.dea: NULL as a default value for wv (scaling factor will be applied)

=================================================================================== DJL v2.8 (Release date: 2018-12-09)

Code>

  1. roc.malmquist: orientation default to be "n"
  2. dm.sbm: bug fixed on the normalization factor t

Man>

  1. roc.malmquist: orientation default to be "n"

=================================================================================== DJL v2.7 (Release date: 2018-04-18)

Code>

  1. roc.malmquist: new feature added

Man>

  1. roc.malmquist: new feature added

=================================================================================== DJL v2.6 (Release date: 2016-09-27)

Code>

  1. dm.ddf/dea/hdf/sbm/sf: argument 'o' added
  2. dm.hdf: consistency checking simplified using argument 'o'
  3. dm.ddf/sf: weak disposability bug fixed
  4. roc.dea/df: overall code simplified using argument 'o' with matrix operation
  5. map.soa.ddf/dea/sbm/sf: overall code simplified with matrix operation
  6. map.soa.hdf: new feature added
  7. roc.hdf: new feature added
  8. target.arrival.hdf: new feature added
  9. target.spec.dea: argument 'bound' added

Man>

  1. dm.ddf/dea/hdf/sbm/sf: argument 'o' added
  2. map.soa.hdf: new feature added
  3. roc.hdf: new feature added
  4. target.arrival.hdf: new feature added
  5. target.spec.dea: argument 'bound' added

=================================================================================== DJL v2.5 (Release date: 2016-08-18)

Code>

  1. dm.hdf: hyperbolic distance function added
  2. dm.sf: dual output added / default g set to be xdata*ydata
  3. dm/map.soa.ddf / map.soa/roc/target.arrival.sf: default g set to be xdata*ydata

Man>

  1. dm.hdf: hyperbolic distance function added
  2. dm.sf: dual output added / default g set to be xdata*ydata
  3. dm/map.soa.ddf / map.soa/roc/target.arrival.sf: default g set to be xdata*ydata

=================================================================================== DJL v2.4 (Release date: 2016-07-10)

Code>

  1. dm.ddf/dea/sbm/sf: convexity argument added for Free Disposal Hull
  2. map.soa.ddf/dea/sbm/sf: convexity argument added for Free Disposal Hull
  3. target.arrival.dea/sf: convexity argument added for Free Disposal Hull
  4. target.spec.dea: convexity argument added for Free Disposal Hull
  5. ma.aps.reg: refined with homemade-combination function
  6. dm.sbm: bug fixed

Man>

  1. dm.ddf/dea/sbm/sf: convexity argument added for Free Disposal Hull
  2. map.soa.ddf/dea/sbm/sf: convexity argument added for Free Disposal Hull
  3. target.arrival.dea/sf: convexity argument added for Free Disposal Hull
  4. target.spec.dea: convexity argument added for Free Disposal Hull
  5. dm.dea: reference / example revised

=================================================================================== DJL v2.3 (Release date: 2016-06-06)

Code>

  1. map.corr: new feature added
  2. dm.mahalanobis: row(s) including NA will be excluded

Man>

  1. map.corr: new feature added
  2. dm.mahalanobis: value 'excluded' added
  3. target.spec.dea: reference updated

=================================================================================== DJL v2.2 (Release date: 2016-05-16)

Code>

  1. dm.mahalanobis: new feature added

Man>

  1. dm.mahalanobis: new feature added

=================================================================================== DJL v2.1 (Release date: 2016-02-25)

Code>

  1. target.spec.dea: initial checks for alpha/beta added / feasible bound check added

Man>

  1. target.spec.dea: description & reference added
  2. dm.sbm: weak-pareto optimal -> alternate optima

=================================================================================== DJL v2.0 (Release date: 2016-02-07)

Code>

  1. target.spec.dea: input estimation bug fixed: 1-delta^dt -> (1/delta)^dt / procedure modified to encompass the traditional inverse DEA / initial checks added for dumb inputs
  2. target.arrival.dea: bug fixed for s.eff & infinity checks / initial checks added for dumb inputs
  3. target.arrival.sf: initial checks added for dumb inputs
  4. roc.dea: initial checks added for dumb inputs
  5. roc.sf: initial checks added for dumb inputs

Man>

  1. target.spec.dea: descriptions & example added for changes made

=================================================================================== DJL v1.9 (Release date: 2016-01-17)

Code>

  1. ma.aps.reg: name changed from aps.reg (sorry!) / mad/aic/bic switches turned off as a default setting / alias test added to cope with the singularity / warning added for case of no model meeting given criteria Man>
  2. target.spec.dea: description revised / reference added

=================================================================================== DJL v1.8 (Release date: 2015-12-17)

Code>

  1. All codes: initial checks added
  2. aps.reg: new feature (all possible subset regression) added

Man>

  1. aps.reg: new feature (all possible subset regression) added

=================================================================================== DJL v1.7 (Release date: 2015-11-17)

Dataset>

  1. All datasets framed for easy use

Man>

  1. All examples using dataset rewritten

=================================================================================== DJL v1.6 (Release date: 2015-11-07)

Dataset>

  1. dataset.airplane.2017 added

Code>

  1. dm.sf: weak disposability output constraint bug(missing gamma) fixed
  2. roc.dea: no c but mean to calc avgroc
  3. roc.sf: no c but mean to calc avgroc / geometric mean is used for equi-ratio
  4. target.arrival.dea: calc iroc-ftype after sg / returns roc_avg and roc_local
  5. target.arrival.sf added

Man>

  1. dataset.hev.2013: ~MY2013
  2. dm.sbm: 3rd example, margin
  3. dm.sf: ratio->multiplicative form
  4. target.spec.dea: than->over
  5. typo: min - Date-sum max->min
  6. map.soa: indices->index, changes->score

=================================================================================== DJL v1.5 (Release date: 2015-10-01)

Code>

  1. dm.ddf: default value of w to be NULL / if(w[1,r]==1 / uo - to +
  2. dm.sf: default value of w to be NULL / if(w[1,r]==1 / uo - to +
  3. map.soa.ddf: ordering / w is not set to 0 / crop map till p / mk option added
  4. map.soa.dea: ordering / sg is not set to ssm / crop map till p / mk option added
  5. map.soa.sbm: ordering / sg is not set to ssm / crop map till p / mk option added
  6. map.soa.sf: ordering / w is not set to 0 / crop map till p / mk option added

Man>

  1. dm.ddf: g as n*(m+s) in example
  2. dm.sf: g as n*(m+s) in example

=================================================================================== DJL v1.0 (Release date: 2015-09-30)

A grand debut on CRAN

Reference manual

It appears you don't have a PDF plugin for this browser. You can click here to download the reference manual.

install.packages("DJL")

3.0 by Dong-Joon Lim, 24 days ago


Browse source code at https://github.com/cran/DJL


Authors: Dong-Joon Lim , PhD


Documentation:   PDF Manual  


GPL-2 license


Depends on car, lpSolveAPI


See at CRAN