ভূমিকা

Shiavault - a Vault of Shia Islamic Books Classification of Arabic Documents Project Model The project passes through three main phasesas shown in figure 2 Arabic documents collection Data preprocessing Classification Figure 2: ATC model Arabic documents collection. In this phase, we collect the data set that will be used for building and testing the classifier module. At this point we had to make an important decision; whether we will deal with diacritics.

As we mentioned earlier, diacritics is very important in Arabic documents, for instance to distinguish between the two words (ذَهَبَ zhb) which means "to go" and the word (ذَهَبْ zhb) which means "gold" , the only way is to depend on diacritics The two words are totally different; "Go" can appear in many contexts without identification for any topic an category, while the word "Gold", when it appears frequently in a document it means that this document could be categorized under financial or economical context.

But on the other hand working with diacritics in documents is very difficult, not only because it increases the character space from 28 letters to more 300 character.But also, diacritics are subjected to many complex Arabic grammars. So, if we want to consider the diacritics we have to consider the Arabic grammar and syntax which is a very complex problem.In the project,we used diacritic-lessdocuments or documents with very little diacritics.

Our document collection consists of one hundred documents all of them are about Arabic spring; these documents are categorized into two main topics; violence and politics in Arabic spring. Each category is 50 documents. We collected these documents from the Arabic news websites.

For each of these categories there are many words that are expected to be more frequent, for each category we expect to find a set of frequent words, as well, we expect to find a set of common words for both categories as shown infigure 3.