1. Introduction
Arabic is one of Semitic languages, spoken by more
than 422 million. Information Retrieval (IR) is the
process of finding all relevant documents responding to
a query from mainly unstructured textual data. The
science and practice of storing, searching and founding
Arabic information within data is called Arabic IR [6].
The area of IR includes many studies that have been
proposed to help users to retrieve information on their
interests. The majority of the previously undertaken
work describes methods and tools to process English
language-based documents. The traditional model for
IR framework assumes that each document is
represented by a set of keywords, so-called index terms
[18]. There are several features that distinguish the
Arabic language from other languages. For example,
the Arabic language is written from right to left, it has a
complex morphological structure, Arabic is polysemous
(i.e., the same word may have several meanings) and
contains a rich set of vocabulary [19].
1. IntroductionArabic is one of Semitic languages, spoken by morethan 422 million. Information Retrieval (IR) is theprocess of finding all relevant documents responding toa query from mainly unstructured textual data. Thescience and practice of storing, searching and foundingArabic information within data is called Arabic IR [6].The area of IR includes many studies that have beenproposed to help users to retrieve information on theirinterests. The majority of the previously undertakenwork describes methods and tools to process Englishlanguage-based documents. The traditional model forIR framework assumes that each document isrepresented by a set of keywords, so-called index terms[18]. There are several features that distinguish theArabic language from other languages. For example,the Arabic language is written from right to left, it has acomplex morphological structure, Arabic is polysemous(i.e., the same word may have several meanings) andcontains a rich set of vocabulary [19].
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