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 A Comparison of Algorithms used to measure the Similarity between two documents
Tác giả hoặc Nhóm tác giả: Khuat Thanh Tung, Nguyen Duc Hung, Le Thi My Hanh
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Nơi đăng: International Journal of Advanced Research in Computer Engineering & Technology (IJARCET); Số: Volume 4 Issue 4;Từ->đến trang: 1117-1121;Năm: 2015
Lĩnh vực: Chưa xác định; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
Nowadays, measuring the similarity of documents plays an important role in text related researches and applications such as document clustering, plagiarism detection, information retrieval, machine translation and automatic essay scoring. Many researches have been proposed to solve this problem. They can be grouped into three main approaches: String-based, Corpus-based and Knowledge-based Similarities. In this paper, the similarity of two documents is gauged by using two string-based measures which are character-based and term-based algorithms. In character-based method, n-gram is utilized to find fingerprint for fingerprint and winnowing algorithms, then Dice coefficient is used to match two fingerprints found. In term-based measurement, cosine similarity algorithm is used. In this work, we would like to compare the effectiveness of algorithms used to measure the similarity between two documents. From the obtained results, we can find that the performance of fingerprint and winnowing is better than the cosine similarity. Moreover, the winnowing algorithm is more stable than others.
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ABSTRACT
Nowadays, measuring the similarity of documents plays an important role in text related researches and applications such as document clustering, plagiarism detection, information retrieval, machine translation and automatic essay scoring. Many researches have been proposed to solve this problem. They can be grouped into three main approaches: String-based, Corpus-based and Knowledge-based Similarities. In this paper, the similarity of two documents is gauged by using two string-based measures which are character-based and term-based algorithms. In character-based method, n-gram is utilized to find fingerprint for fingerprint and winnowing algorithms, then Dice coefficient is used to match two fingerprints found. In term-based measurement, cosine similarity algorithm is used. In this work, we would like to compare the effectiveness of algorithms used to measure the similarity between two documents. From the obtained results, we can find that the performance of fingerprint and winnowing is better than the cosine similarity. Moreover, the winnowing algorithm is more stable than others.
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