Loughran and McDonald(2011)指出在Harvard Dictionary中几乎75%负面单词是错误分类(misclassified)。Harvard中经常使用的负面词,如税收(tax)、过剩(excess)、资本(capital)、董事会(board)、外国(foreign),和负债(liabilities),在财务披露中使用时显然不是贬义词。 Loughran and McDonald(2011)通过判断一个特定词在金...
We propose a novel methodology based on transformers and explainability with SHapley Additive exPlanations (SHAP) to automatically learn financial lexicons. We demonstrate that transformer-aided explainable lexicons can improve the vocabulary coverage of the benchmark Loughran-McDonald (LM) lexicon and ou...