یک سیستم امتیازدهی آنلاین با استفاده از فناوری دفتر کل توزیع شده مبتنی بر قراردادهای هوشمند
الموضوعات :
سیده الهام موسوی خو
1
(دانشگاه آزاد اسلامی یاسوج)
الکلمات المفتاحية: سیستم امتیازدهی برخط, فناوری‌های دفترکل توزیع‌شده, قرارداد هوشمند, بلاکچین.,
ملخص المقالة :
سیستم امتیازدهی برخط در اکثر وب‌سایت‌ها، امتیاز محصولات و خدمات را به کاربران ارائه می‌کند. عدم اعتماد از درستی و دستکاری نشدن داده باعث شده رضایت کاربران آن‌گونه که باید تامین نشود. با توجه به اینکه سیستم امتیازدهی برخط موجود با سرویسدهنده مرکزی سروکار دارد، همه داده‌های امتیاز در یک سرویسدهنده مرکزی ذخیره می‌شوند؛ از این‌رو همه داده‌های امتیاز توسط مدیر سیستم، امکان حذف، تغییر و دستکاری دارد تا نتایج امتیازها به نفع ارائه‌کننده خدمات یا محصولات تغییر کند. در این پژوهش سیستم امتیازدهی برخط با استفاده از فناوری‌های دفترکل توزیع‌شده به عنوان سیستم پیشنهادی معرفی‌شده است تا همه نقاط ضعفی که در سیستم‌هاي فعلي هستند را حل کند. فناوری‌های دفترکل توزیع‌شده، نوعی فناوری است که به صورت نامتمرکز عمل می‌کند و هیچ تمرکزی از سمت هیچ نهادی روی این فناوری نیست. فناوری‌های دفترکل توزیع‌شده، انواع متفاوتی دارد. از بین فناوری‌های دفترکل توزیع‌شده، فناوری زنجیره بلوکی به دلیل پشتیبانی از قرارداد هوشمند برای سیستم امتیازدهی پیشنهادی انتخاب‌شده است. در سیستم پیشنهادی امتیازدهی برخط، معیار‌های عملکرد یک گره ناشناخته است و بنابراین نمی‌توان از آن‌ها به صورت مستقیم برای بهینه‌سازی نتایج تقسیم‌بندی استفاده کرد. برای حل مساله عملکرد ناشی از تفاوت گره در بلاکچین بدون شناخت ویژگی‌های مختلف گره، یک روش تقسیم‌بندی جدید با نام NoRS پیشنهاد می‌کنیم. این روش پیشنهادی از چهار فاز شماتیک NoRS، مکانیزم امتیازدهی، استراتژی تقسیم‌بندی تایید تراکنش، ایجاد و انتشار بلاک جدید تشکیل شده است. بنابراین، با برسی گزارش‌های فرآیند تراکنش، گره‌ها را ارزیابی می‌کنیم و بر مبنای امتیاز متناظر با هر گره، آن‌ها را به کمیته‌های مختلف تخصیص می‌دهیم؛ با این فرآیند، نسبت گره‌های مختلف درون کمیته متعادل می‌شود تا راندمان تراکنش بلاکچین بهبود یابد. مزایای سیستم امتیازدهی پیشنهادی در مقایسه با سیستم‌‌های موجود این است که سیستم پیشنهادی به صورت نامتمرکز عمل می‌کند و اطلاعات قابل دستکاری نیست. همچنین حریم خصوصی امتیاز‌دهندگان حفظ می‌شود و شفافیت داده‌‌ها تضمین می‌شود.
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