Name Khashayar Valiallahi Affiliation عضو یک سازمان آموزشی یا پژوهشی داخلی Degree _ Website Email — JournalPaper Presentation Book Thesis FinishedProject Speech GrantAttraction TheorizingChair Publication Innovation ResearchExcellence TitleJournal 1 A hybrid recommendation system based on profile expansion technique to alleviate cold start problem MULTIMEDIA TOOLS AND APPLICATIONS