استفاده از شبکه مولد متخاصم شرطی برای تولید داده با هدف بهبود کلاس¬بندی کاربران منتشرکننده اخبار جعلی
محورهای موضوعی :
1 - دانشجو
2 - استادیار
کلید واژه: شناسایی کاربر منتشرکننده اخبار جعلی, مجموعه ¬داده¬های نامتوازن, شبکه مولد متخاصم, گراف تعاملات کاربران, تعبیه گره.,
چکیده مقاله :
سالیان درازی است که اخبار و پیام های جعلی در جوامع انسانی منتشر می گردد و امروزه با فراگیرشدن شبکه های اجتماعی در بین مردم، امکان نشر اطلاعات نادرست بیشتر از قبل شده است. بنابراین، شناسایی اخبار و پیام های جعلی به موضوع برجسته ای در جوامع تحقیقاتی تبدیل شده است. ضمناً، شناسایی کاربرانی که این اطلاعات نادرست را ایجاد می کنند و در شبکه نشر می دهند، از اهمیت بالایی برخوردار است. این مقاله، به شناسایی کاربرانی که با زبان فارسی اقدام به انتشار اطلاعات نادرست در شبکه اجتماعی توئیتر می کنند، پرداخته است. در این راستا، سیستمی بر مبنای ترکیب ویژگی های بافتار-کاربر و بافتار-شبکه با کمک شبکه مولد متخاصم شرطی برای متوازن سازی مجموعه -داده پایه ریزی شده است. هم چنین، این سیستم با مدل کردن شبکه اجتماعی توئیتر به گراف تعاملات کاربران و تعبیه گره به بردار ویژگی توسط Node2vec، کاربران منتشرکننده اخبار جعلی را شناسایی می کند. علاوه بر این، با انجام آزمایشات متعدد، سیستم پیشنهادی تا حدود 11% ، 13 % ،12 % و 12 % به ترتیب در معیار های دقت، فراخوانی، معیار اف و صحت نسبت به رقبایش بهبود داشته است و توانسته است دقتی در حدود 99% در شناسایی کاربران منتشرکننده اخبار جعلی ایجاد کند.
For many years, fake news and messages have been spread in human societies, and today, with the spread of social networks among the people, the possibility of spreading false information has increased more than before. Therefore, detecting fake news and messages has become a prominent issue in the research community. It is also important to detect the users who generate this false information and publish it on the network. This paper detects users who publish incorrect information on the Twitter social network in Persian. In this regard, a system has been established based on combining context-user and context-network features with the help of a conditional generative adversarial network (CGAN) for balancing the data set. The system also detects users who publish fake news by modeling the twitter social network into a graph of user interactions and embedding a node to feature vector by Node2vec. Also, by conducting several tests, the proposed system has improved evaluation metrics up to 11%, 13%, 12%, and 12% in precision, recall, F-measure and accuracy respectively, compared to its competitors and has been able to create about 99% precision, in detecting users who publish fake news.
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