Volume 22 No 4 (2024)
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DESCRIPTIVE ANSWER EVALUATION SYSTEM BASED ON COSINE SIMILARITY
K.VijayKumar,N. Mounika,T. Amulya,Pavani,Keerthi
Abstract
Manually reviewing subjective articles is a laborious process fraught with challenges related to data
understanding and acceptance, which impedes the effective use of AI for evaluation. Many have
explored using computer technology to assess student answers, often relying on traditional methods or
specific terminology, yet validated datasets remain scarce. This paper proposes a novel approach to
automatically evaluate descriptive responses by integrating machine learning, natural language
processing, and toolkits such as Wordnet, Word2vec, WMD, cosine similarity, MNB, and TF-IDF. Solution
statements and keywords are leveraged for evaluation, and a machine learning model is trained to
predict grades. Results indicate that WMD outperforms cosine similarity in effectiveness. With sufficient
training, the machine learning model can operate independently. Experimental findings demonstrate an
88% accuracy without MNB, which improves by 1.3% when MNB is included.
Keywords
Subjective article evaluation, automatic assessment, machine learning, natural language processing, Wordnet, Word2vec, WMD, cosine similarity, MNB, TF-IDF.
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