Which axiom system for bad outputs? | Fitting each model | The comparison harness | References
Package: pgt 0.7.1
Erik Enstad
pgt: Data Envelopment Analysis for Pollution-Generating Technologies
Nonparametric efficiency analysis for pollution-generating technologies under the materials-balance principle. Implements the weak-G-disposability technology of Hampf and Rodseth (2015) <doi:10.1016/j.eneco.2015.04.001>, scored by the minimal-emission programme of Rodseth (2025) <doi:10.1007/s11123-025-00768-0> with its directional representation and five-component decomposition, the by-production intersection technology of Murty, Russell and Levkoff (2012) <doi:10.1016/j.jeem.2012.02.005>, the materials-balance cost model of Coelli, Lauwers and Van Huylenbroeck (2007) <doi:10.1007/s11123-007-0052-8> and a weak-disposability reference model, with a pre-estimation audit of every materials-balance account, metafrontier decompositions, bad-output shadow prices, marginal abatement cost curves, a cross-axiom comparison harness, a global Malmquist-Luenberger productivity index and subsampling sensitivity intervals. Estimators are solved with 'lpSolveAPI'.
Authors:
pgt_0.7.1.tar.gz
pgt_0.7.1.zip(r-4.7-any)pgt_0.7.1.zip(r-4.6-any)pgt_0.7.1.zip(r-4.5-any)
pgt_0.7.1.tgz(r-4.6-any)pgt_0.7.1.tgz(r-4.5-any)
pgt_0.7.1.tar.gz(r-4.7-any)pgt_0.7.1.tar.gz(r-4.6-any)
pgt_0.7.1.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
DESCRIPTION |NEWS
card.svg |card.png
pgt/json (API)
| # Install 'pgt' in R: |
| install.packages('pgt', repos = c('https://iik1.r-universe.dev', 'https://cloud.r-project.org')) |
Bug tracker:https://github.com/iik1/pgt/issues
Datasets:
Last updated from:dd8156fc4a. Checks:9 OK. Indexed: yes.
| Target | Result | Time | Files | Syslog |
|---|---|---|---|---|
| linux-devel | OK | 135 | ||
| source / vignettes | OK | 191 | ||
| linux-release | OK | 122 | ||
| macos-release | OK | 219 | ||
| macos-oldrel | OK | 219 | ||
| windows-devel | OK | 110 | ||
| windows-release | OK | 103 | ||
| windows-oldrel | OK | 108 | ||
| wasm-release | OK | 93 |
Exports:boot_pgtboot_pgt_sensitivitycompare_modelsmac_curvemb_checkpgtpgt_decomposepgt_mlpgt_techshadow_prices
Dependencies:lpSolveAPI
Comparing axiom systems
Last update: 2026-10-13
Started: 2026-07-16
Introduction to pgt
The materials-balance principle | Building a technology | Auditing the identity before estimation | Estimating environmental efficiency | Shadow prices and abatement cost | Decomposing across production routes | A worked example on real data | References
Last update: 2026-10-13
Started: 2026-07-16
Productivity change and inference
Productivity change with a bad output | A constructed panel | A real rice panel | Subsampling inference | Coverage under a known data-generating process | References
Last update: 2026-10-13
Started: 2026-07-16
Replicating published results
Rødseth (2025), Table 2: minimal controlled emissions | Rødseth (2025), Table 3: the directional representation | Murty, Russell and Levkoff (2012): the by-production example | Coelli, Lauwers and Van Huylenbroeck (2007): coefficients and the EE = TE x EAE decomposition | References
Last update: 2026-10-13
Started: 2026-07-16
The estimating programmes
Weak-G-disposability (model = "wgd") | The input-fixed benchmark (model = "wgd_input_fixed") | The $(y, b)$ lower envelope (model = "envelope") | The directional representation (model = "fdmo") | The decomposition stage programmes (pgt_decompose(type = "rodseth")) | The materials-balance cost model (model = "mb_cost") | The by-production intersection (model = "byprod") | Weak disposability (model = "wd") | The productivity-index distances (pgt_ml()) | References
Last update: 2026-10-13
Started: 2026-07-16
Multiple pollutants and heterogeneous coefficients
A two-pollutant technology | Every pollutant's cap constrains the input-fixed benchmark | DMU-specific coefficients | The five-component decomposition | Several intended outputs | References
Last update: 2026-09-05
Started: 2026-07-16
