Title	Investigating Predictive Features for Authorship Verification of Arabic Tweets
Author	Fatimah Alqahtani, Mischa Dohler
Citation	Vol. 22  No. 6  pp. 115-126
Keywords	Authorship verification, Stylometry, Arabic, short texts.

Title	The Effect of the Sentence Location on Arabic Sentiment Analysis
Author	Saud S. Alotaibi
Citation	Vol. 22  No. 5  pp. 317-319
Keywords	Sentiment Classification, Negation scope, Arabic Natural Language Processing, Arabic Sentiment Sentence Classification, Machine Learning.

Title	Capturing Negation scope using Base Phrase Chunk in Arabic Sentiment Classification
Author	Saud S. Alotaibi
Citation	Vol. 22  No. 4  pp. 809-816
Keywords	Sentiment Classification, Negation scope, Arabic Natural Language Processing, Arabic Sentiment Sentence Classification, Machine Learning.

Title	Information Retrieval Systems: Between Morphological Analyzers and Systemming Algorithms
Author	Afaf Abdel Rhman Mohamed, Chafika Ouni, Sarah Mustafa Eljack, and Fayez Alfayez
Citation	Vol. 22  No. 3  pp. 375-381
Keywords	Arabic language, Information retrieval systems, Morphological analyzer, Stemming algorithms.