Pattern-and-root inflectional morphology: the Arabic broken plural

2026-05-21 · Source: Computation and Language · Field: Technology & Digital — Artificial Intelligence & Machine Learning, Computational Linguistics · Depth: Advanced, quick

Summary

A new model for Arabic noun inflectional morphology, focusing on broken plurals (BPs), reverses the traditional root-and-pattern Semitic approach to pattern-and-root, prioritizing patterns. This model, designed for Arabic-speaking linguists, separates formal inflectional description from derivation and semantics, unlike traditional Arabic morphology. It incorporates BPs, which are plurals formed by modifying the stem, and performs morphological analysis directly with a word dictionary, bypassing morphophonological rules. The system simplifies singular pattern taxonomy by specifying vowel quantity (v or vv) and ignoring vowel quality, while encoding root alternations and orthographical variations factually. The taxonomy classifies nouns with triliteral BPs into 22 patterns across 90 classes, and quadriliteral BPs into 3 patterns across 70 classes. These 160 classes expand to 300 inflectional classes when singular variations are considered. An encoding scheme was applied to 3 200 BP noun entries.

Key takeaway

For NLP Engineers or computational linguists developing Arabic morphological analyzers, this pattern-and-root model offers a streamlined approach. You should consider adopting its methodology to simplify your taxonomy of singular patterns and manage dictionaries more efficiently, potentially reducing reliance on complex morphophonological rules. This framework could enhance the accuracy and maintainability of your Arabic language resources, especially for handling broken plurals.

Key insights

The model reverses traditional Semitic morphology to pattern-and-root, simplifying Arabic noun inflection, especially for broken plurals.

Principles

• Prioritize patterns over roots in Semitic morphology.
• Separate inflectional description from derivation and semantics.
• Encode root alternations factually, without deep rules.

Method

Morphological analysis is performed directly using a dictionary of words, eliminating the need for morphophonological rules. Singular patterns are simplified by specifying vowel quantity.

In practice

• Apply the encoding scheme to broken plural noun entries.
• Structure dictionaries with lexical entries for lemmas.
• Use fully diacritized reference spellings.

Topics

• Arabic Morphology
• Broken Plurals
• Inflectional Morphology
• Pattern-and-Root Model
• Computational Linguistics
• Lexical Resources

Best for: NLP Engineer, AI Scientist, Research Scientist

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Editorial summary, takeaway, and curation by AIssential. Original article published by Computation and Language.