“…Among the most common methods was their application on papers: in an unspecified representation [30,119], Word2Vec [19,37,44,45,55,104,113], Word2Vec of LDA top words [24,107], Doc2vec [21,28,48,62,63,107], Doc2Vec of word pairs [109], BERT [123] and SBERT [5,19]. Most times these approaches do not mention which part of the paper to use as input but some specifically mention the following parts: titles [37], titles and abstracts [28,45], titles, abstracts and bodies [48], keywords and paper [119].…”