NEWS

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exametrika 1.5.1 (2025-03-09)

• Field analysis for Biclustering is included in the Biclustering() function
• Class/Rank Reference Vector plot is now available.
• Bug Fix for polychoric correlations

exametrika 1.5.0

• New function GRM is available!

exametrika 1.4.4

• In Exametrika 1.4.1, bug fixes were made.
• In 1.4.2, it became possible to calculate polychoric correlation and polyserial correlation.
• In 1.4.3, item analysis for polytomous items became available.
• In 1.4.4, we renamed "ICC" to "IRF," although they refer to the same concept (Item Characteristic Curves and Item Response Functions are interchangeable terms). The function will interpret "ICC" input as "IRF" automatically. Additionally, Test Response Function (TRF) output was also made available.

exametrika 1.4.0

• New function LRA() now supports rated data
• Hex icon available

exametrika 1.3.0

• Added implementation of latent rank model for ordinal scale data

• New function LRA() now supports ordinal response data

  • Added visualization methods for ordinal scale analysis:
    • Score frequency with rank thresholds (ScoreFreq)
    • Score-rank probability heatmap (ScoreRank)
    • Item category boundary reference (ICBR)
    • Item category response profile (ICRP)

• Bug fixes and improvements

• Standardized terminology: unified the usage of "class" and "rank" throughout the package

• Various minor bug fixes

exametrika 1.2.0 (2025-01-31)

• Improved numerical stability for model estimation
• Bug fixes for log-likelihood calculation

exametrika 1.1.0 (2024-11-22)

• Added support for polytomous response data

exametrika 1.0.2

• Bug fix for Issue #12

exametrika 1.0.1

• Bug fix for Item Total Correlation
• Bug fix for Fit indices
• New function called ItemStatistics

exametrika 1.0.0

• Initial Release

exametrika 0.11.5

• Bug fix for plot labels for TRP/LRD

exametrika 0.11.4

• Bug fix for LCD/LRD for IRM

exametrika 0.11.3

• Bug fix for item information curve

exametrika 0.11.2

• Plot manual update

exametrika 0.11.1

• All model tested by testthat environment

exametrika 0.11.0

• Added BINET model

exametrika 0.10.0

• Added LDB model

exametrika 0.9.0

• Added Structure Learning for LDLRA using PBIL
• Added LDLRA model

exametrika 0.8.1

• Added Structure Learning for BMN with simple GA and PBIL model

exametrika 0.8.0

• Added BNM model

exametrika 0.7.0

• Added IRM model

exametrika 0.6.1

• Added Q3 matrix output to the IRT function