English composition automatic marking method based on test paper

The invention discloses an automatic English composition marking method based on test paper, and relates to research and application of artificial intelligence (AI) related technologies in the field of education, in particular to teaching examination and personalized learning of students. The method comprises the following steps: analyzing an English composition by utilizing stanfordcorenlp and nltk, then performing feature extraction and classification sentence by sentence by adopting a machine learning algorithm XGBoost, and finally detecting grammar error points and some recommended expressions. The method has the advantages of helping to explore some grammatical errors existing in English compositions of students and the defects of the students in English expression so as to promote the improvement of the writing level of the students. The automatic marking process of the English composition mainly comprises the following steps: inputting the composition, automatically marking thecomposition, and generati