Should highly cited items be excluded in impact factor calculation? The effect of review articles on journal impact factor The use of the journal impact factor for evaluation purposes has been widely challenged because of the simplistic algorithm involved in impact factor calculation. As a result, a journalu0027s impact factor may be affected by many variables, such as highly cited review articles. In the present study, we aimed to investigate whether and to what extent review articles affect the impact factors of journals. We examined the citations of original research articles and review articles in the field of physics, and compared the impact factors of the journals Science, Nature, and Cell with and without citation counts of review articles included. The results showed that review articles consistently received higher numbers of citations than did original research articles. In addition, review articles accounted for 3xe2x80x9310% of the impact factors of these top journals. Based on our findings, we suggest that sophisticated methods, in addition to the impact factor, be employed for research evaluation purposes.

Analyzing the Influence of Academic Papers Based on Improved PageRank The number of papers, published in different fields, is continually increasing, but the quality of papers varies widely. Scholars evaluate the quality and influence of a paper by the number of times the paper was cited, but the result of this citation quantity method is not accurate enough especially for new papers. Our society needs an accurate, objective and fair evaluation of papers. To address these problems, this article presents a method for evaluating the impact of papers. We analyze the influence of each academic paper in the citation network based on the improved PageRank algorithm and combined with the personal influence of the authors and the published date. Thus, this method tends to select highquality authors and highquality citations as highimpact papers. The comparison results showed that our method outperformed the traditional method of citation number and PageRank algorithm.