Credit Card Fraud Detection

The dataset from https://www.kaggle.com/datasets/mlg-ulb/creditcardfraud The dataset contains transactions made by credit cards in September 2013 by European cardholders.<br> This dataset presents transactions that occurred in two days, where we have 492 frauds out of 284,807 transactions. The dataset is highly unbalanced, the positive class (frauds) account for 0.172% of all transactions.本数据集源自Kaggle平台上的mlg-ulb/creditcardfraud数据集（链接：https://www.kaggle.com/datasets/mlg-ulb/creditcardfraud），收录了2013年9月欧洲信用卡持卡人产生的信用卡交易记录。该数据集涵盖了两天内产生的全部交易，共计284807笔交易，其中包含492笔欺诈交易。该数据集存在严重的类别不平衡问题，其中正类（positive class，即欺诈交易）占总交易笔数的0.172%。