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JL

James Lo

4 packages On CRAN since Mar 2006 (20 years) · last active 10 months ago
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Downloads

3.4K

Last 30 days

6.3K

Last 90 days

16.6K

Last year

Average trend: +98.7% (30d vs prior 30d)

Top Packages by Downloads

basicspace
1.4K
anominate
1.4K
emIRT
334
oc
228

Recent Activity

emIRT updated v0.0.15 Sep 23, 2025

EM Algorithms for Estimating Item Response Theory Models

basicspace updated v0.25 Dec 2, 2024

Recovering a Basic Space from Issue Scales

anominate updated v0.7 Nov 21, 2024

Alpha-NOMINATE Ideal Point Estimator

emIRT updated v0.0.14 Jul 5, 2024

EM Algorithms for Estimating Item Response Theory Models

oc updated v1.2.1 Feb 5, 2023

Optimal Classification Roll Call Analysis Software

emIRT updated v0.0.13 Mar 3, 2022

EM Algorithms for Estimating Item Response Theory Models

oc updated v1.2 Jul 12, 2020

Optimal Classification Roll Call Analysis Software

emIRT updated v0.0.11 Feb 3, 2020

EM Algorithms for Estimating Item Response Theory Models

basicspace updated v0.24 Jan 9, 2020

Recovering a Basic Space from Issue Scales

emIRT updated v0.0.9 Dec 12, 2019

EM Algorithms for Estimating Item Response Theory Models

Co-authored Packages

4 packages

Package Version
basicspace 0.25
anominate 0.7
emIRT 0.0.15
oc 1.2.1