A novel BNB-NO-BK method for detecting fraudulent crowdfunding projects

Abstract

Identifying fraudulent campaigns or messages remains a difficult task in the field of natural language processing. We proposed a hypothesis that if the well-known brands in the same category as the crowdfunding project can implement similar technology as crowdfunding projects, the project is considered to be more feasible. The opposite is considered more likely to be fraudulent. This research proposed a novel BNB-NO-BK method to detect fraudulent crowdfunding projects. A novel method called BNB, which was constructed by key-BERT, NLTK, and fine-tuned QA model for BERT, was proposed to extract the characteristics of crowdfunding projects. We proposed a novel NO (Nice Classification & Ontology) method for classifying the categories of projects, which constructed ontology trees based on the characteristics of the crowdfunding projects and our modified Nice Classification. Furthermore, we proposed a novel BK (Brand Knowledge) cross-checking method to extract the features of crowdfunding projects. Finally, we compared the performances of different machine learning methods for identifying fraudulent crowdfunding projects. Furthermore, to address the problem of possible bias caused by unbalanced data, we used data augmentation to process the dataset. Our proposed method achieved an accuracy of 95.71% in detecting fraudulent crowdfunding projects, which was superior to existing methods.

Keywords

• crowdfunding projects
• fine-tunebert qa model
• ontology
• brand information retrieval
• machine learning classifier