Innovative Research on Collaborative Design of Blended English Teaching in Higher Vocational Colleges Based on Digital Technology

Algorithm 1

Recommendation algorithm.

	Public float repeat value (Document doc1, Document doc2) {
	Float keyword TFIDF = 0.0f;
	Float doc1 TFIDF = 0.0f;
	Float doc2 TFIDF = 0.0f;
	For (String word: doc1.getContentTerms().keySet()) {
	If (doc2.getContentTerms().containsKey (word)) {
	Keyword TFIDF += doc1.getContentTerms().get(word);
	}
	Doc1 TFIDF += doc1.getContentTerms().get(word);
	}
	For (String word: doc2.getContentTerms().keySet()) {
	Doc2 TFIDF += doc2.getContentTerms().get(word);
	}
	Return (keyword TFIDF/doc1 TFIDF)(keyword TFIDF/doc2 TFIDF);
	}.