Digital Islamic Humanities

Digital Islamic Humanities

Noor intelligent Arabic word stemmer engine

Document Type : Original Article

Author
Seyyed Mohsen Hashemi
Programmer engineer of intelligent processing group of computer research center of Islamic sciences
10.22034/disah.2024.716144
Abstract
The term "stemmer" refers to an algorithm used in Natural Language Processing (NLP) for morphological analysis, aimed at extracting and representing the root or base form of words. In other words, stemming is achieved by removing prefixes, suffixes, and vowels from conjugated verbs, derived nouns, and other word forms. The purpose of an Arabic stemmer is to reduce each word to its base form while preserving its semantic identity and syntactic function, thus facilitating efficient indexing, searching, and categorization of large Arabic text corpora. This tool plays a vital role in information retrieval, document classification, machine translation, summarization, and question-answering systems. 
A unique feature of the intelligent Arabic stemmer is its simultaneous use of rule-based, data-driven, and learning-based methods. As a result, the performance of this engine surpasses that of other stemming engines at a significant level. This engine utilizes Arabic text data from both classical and modern sources, combined with intelligent morphological analyses and rule-based refinement techniques grounded in the structured nature of the Arabic language. The integration of these three methods is highly effective in resolving ambiguities in words that do not conform neatly to Arabic language rules, contributing to its overall efficiency. This capability has allowed it to overcome some of the challenges faced by other stemming engines. 
Furthermore, this engine has been compared and evaluated using human-generated stems provided by experts, and its accuracy, compared to other stemmers, is of a very high quality. Another valuable feature of this engine is its ability to offer stems at different levels, which is a new and highly beneficial capability that can address the needs of a wide range of users.
Keywords
Arabic stemmer
stemming engine
stemmer engine
Arabic stemming
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Digital Islamic Humanities
Volume 1, Issue 1
September 2025
Pages 179-224