一個期刊的使用率一般都利用來做為評比一個期刊是否具有重要性，其中較常被國內使用的是Institute for Scientific Information (ISI) 的Impact Factor。由於Impact Factor是由ISI所發表的JCR資料庫中大約6000多本學術期刊進行全域引用(Citation)分析計算而得，此種算法僅符合全域性使用者，並不能協助解決區域管理者(例如：特定區域圖書館的管理人員)在期刊眾多且經費有限的情況下，能更精確的提供符合區域使用者需求之期刊，因此，有些研究或現行圖書館則採用區域下載次數為區域期刊推薦之依據。此種方法會存在以下問題：(1)下載次數多的期刊為較高宣傳力的期刊(2)不同期刊給予相同權重值(3)下載次數多的期刊不一定為引用率高的期刊。
為了解決以上問題，本研究希望輔以區域使用者之研究論文的文獻引用資料結合下載次數，並以改進最著名的Google所採用的PageRank評定頁面重要性公式，且可解決不同期刊給予相同的權重值的問題的Weighted PageRank(WPR)公式觀念，以產生區域學術期刊影響指數(Local Impact Factor)，以便於能協助區域管理者了解區域使用者的真正需求。

Generally, the importance of a journal is decided by its usage rate which usually calculated by different ways. The impact factor proposed for SCI (Science Citation Index) and SSCI (Social Sciences Citation Index) by ISI is regarded as a most popular one. It was counted by citation times in JCR (Journal Citation Reports on the Web) by Institute for Scientific Information (ISI). Many institutions treat it as the importance of journals. However, the impact factor represents the usage rate for “global users” which can not really reflect the requirement of “local users”. In the other words, the impact factor hardly to be used as journal subscribe reference when a library decides which journals should be subscribe for local need in the limitary budget environment (Line, 1977; Bollen, Luce, Vemulapalli, and Xu, 2003). For this reason, the idea of local access rate should be the referred for local journal recommendation was proposed. However, the proposed method has leaded some problems, including: (1) High downloaded journal might be caused by popularity instead of its quality (Zinkhan, 2004; Bauerly and Johnson, 2005). (2) Same calculation weight was assigned to all journals. (Xing and Ghorbani, 2004), and (3) We argue that only articles really be cited can reflect its importance instead of being accessed.
In order to solving above problems, an algorithm adapted from PageRank is proposed. It combines citation information of the local users and download frequencies. Moreover, in this proposed method, different weight will be assigned to a journal according usage frequency. This method can solve the problem of not only finding really local usage rate but also same weights of Weighted PageRank(WPR) between different journals to generate Local Impact Factor of journals. Local Impact Factor can be used to assist local manager to realize the real demand of local users.

中文文獻
梁定澎、顧宜錚,資訊管理國際學術期刊分級之研究,第十五屆國際資訊管理學術研討會論文集, 台北,台灣,2004。
陳世哲、李昇暾、林修葳、洪世章、張錦特、葉仕國、盧瑞芬、謝依靜、曹瓊文、吳淑鈴,國內管理學專業期刊評比排序之研究,中山管理評論,13(1),15-48, 2005。
英文文獻
Agosti, M., and Pretto, L. A Theoretical Study of a Generalized Version of Kleinberg’s HITS Algorithm. Information Retrieval, 8(2), 219-243, 2005.
Bauerly, R.J., and Johnson, D.T. An Evaluation of Journals Used in Doctoral Marketing Programs. Journal Of the Academy Of Marketing Science, 33(3), 313-329, 2005.
Beattie, V.A., and Ryan, R.J. The impact of non-serial publications on research in accounting and finance. ABACUS, 27(1), 32-50, 1991.
Bollen, J., Luce, R., Vemulapalli, S., and Xu, W. Detecting research trends in digital library readership. In Proceedings of the seventh European conference on digital librarie. Trondheim, Norway: Springer-Verlag, 2003.
Bollen, J., Rodriguez, M. and Sompel, H. Journal Status. Scientometrics, 69(3), 669-687, 2006.
Bollen, J., Somple, H.V.d., Smith, J.A., and Luce, R. Toward alternative metrics of journal impact:A comparison of download and citation data. Information Processing and Management, 41(6), 1419-1440, 2005.
Brin, S., and Page, L. The Anatomy of a Large Scale Hypertextual Web Search Engine, Computer Networks and ISDN Systems, 30(1-7), 107-117, 1998.
Chakrabarti, S., Dom, B. E., Gibson, D., Kleinberg, J., Kumar, R., Raghavan, P., Rajagopalam, S., and Tomkins, A. Mining the Link Structure of the World wide Web, IEEE Computer, 32(2), 1999a.
Chakrabarti, S., Dom, B. E., Gibson, D., Kumar, R., Raghavan, P., Rajagopalam, S., and Tomkins, A. Experiments in Topic Distillation, ACM SIGIR Workshop on Hypertext Information Retrieval, 1-7, 1998.
Chakrabarti, S., Dom, B. E., Kumar, S. R., Raghavan, P., Rajagopalam, S., Tomkins, A., Gibson, D., and Kleinberg, J. Mining the Web’s Link Structure, IEEE Computer, 32(8), 60-67, 1999b.
Cheng, C.H., Kumar, A., Motwani, J.G., and Reisman, A. A citation analysis of the technology innovation management journals. IEEE Transactions on Engineering Management, 46(1), 4-13, 1999.
Cohn, D., and Chang, H. Learning to probabilistically identify authoritative documents. In Proceedings of 17th International Conference on Machine Learning, 167-174, 2000.
Darmoni, S. J., Roussel, F., Benichou, J., Thirion, B., and Pinhas, N. Reading factor: A new bibliometric criterion for managing digital libraries. Journal of the Medical Library Association, 90(3), 323–327, 2002.
Diaz, J., Black, R.T., and Rabianski, J. A note on the ranking of real estate research journals. Real Estate Economics, 24(4), 551-563, 1996.
Duy, J., and Vaughan, L. Can Electronic Journal Usage Data Replace Citation Data as a Measure of Journal Use? An Empirical Examination1, The Journal of Academic Librarianship, 32(5),512-517, 2006.
Extejt, M.M., and Smith, J.E. The behavioral sciences and management: an evaluation of relevant journals. Journal of Management, 16(3), 539-551, 1990.
Forgionne, G. A., and Kohli, R. A multiple criteria assessment of decision technology system journal quality, Information and Management, 38(7), 421-435, 2001.
Garfield, E. Citation indexing: Its theory and application in science, trchnology, and humanities. New York: John Wiley and Sons, 1979.
Gillenson, M.L., and Stutz, J.D. Academic issues in MIS: journals and books. MIS Quarterly, 15(4), 447-452, 1991.
Holsapple, C.W., Johnson, L.E., Manakyan, H., and Tanner, J.T. Business computer research journals: a normalized citation analysis. Journal of Management Information Systems, 11(1), 131-140, 1994.
Kaplan, N.R., and Nelson, M. L. Determining the publication impact of a digital library. Journal of the American Society of Information Science, 51(4), 324-339, 2000.
Kleinberg, J. M. Authoritative Sources in a Hyperlinked Environment. Journal of the ACM, 46(5), 604 – 632, 1999.
Komatsu, S. JCR for citation analysis. Joho Kanri, 39(3), 199-207, 1996.
Kurtz, M.J., Eichhorn, G., Accomazzi, A., Grant, C. S., Demleitner, M., and Murray, S. S. The bibliometric properties of article readership information. JASIST, 56(2), 111-128, 2005.
Lempel, R., and Moran, S. SALSA: the stochastic approach for link-structure analysis. ACM Transactions on Information Systems, 19(2), 131-160, 2001.
Liebowitz, S.J., and Palmer, J.P. Assessing the relative impacts of economic journals. Journal of Economic Literature, 22(1), 77-88, 1984.
Line, M. On the irrelevance of citation analyses to practical librarianship. A European conference on the application of research in information services in libraries, London: Aslib ,55-53, 1977.
Liu, X., Boolen, J., and Nelson, M.L. Co-authorship networks in the digital library research community. Information Processing and Management, 41(6), 1462-1480, 2005.
Nelson, Michael J. An Alternate Method for Ranking Journals Using Citations, Canadian Association for Information Science, 2006.
Noruzi, A. The Web Impact Factor: a critical review. The Electronic Library, 24(4), 490-500, 2006.
Noruzi, A. The Web Impact Factor: a survey of some Iranian university web sites. Journal of Education & Psychology, 5(2), 105-119, 2005.
Page, L., Brin S., Motwani, R., and Winograd T. The PageRank citation ranking: Bringing order to the web. Technical report, 1998.
Ridings, C., and Shishigin, M. Pagerank uncovered. Technical report, 2002.
Salton,G. Automatic Text Processing. Addison-Wesley, Reading, MA, 1989.
Sidiropoulos, A., and Manolopoulos, Y. A new perspective to automatically rank scientific conferences using digital libraries. Information Processing and Management, 41(2), 289-312, 2005.
Soteriou, A.C. Hadjinicola, G.C., and Patsia, K. Assessing production and operations management related journals: the European perspective. Journal of Operations Management, 17(2), 225-238, 1999.
Turban, E., Zhou D., and Ma, J. A group decision support approach to evaluating journals. Information & Management, 42(1), 31-44, 2004.
Walstrom, K.A., and Hardgrave, B.C. Forums for information systems scholars: III. Information and Management, 39(2), 117-124, 2001.
Walstrom, K.A., Hardgrave, B.C., and Wilson, R.I. Forums for management information systems scholars. Communications of the ACM, 38(3), 93-102, 1995.
Wing, C.K. The ranking of construction management journals. Construction Management and Economics, 15(4), 387-398, 1997.
Xing, W., and Ghorbani, A. Weighted pagerank algorithm. In Second annual conference on communication networks and services research CNSR’04, 305-314, 2004.
Zinkhan, G.M. Accessing Academic Research Through an E-Database: Issues of Journal Quality and Knowledge Use. Journal of the Academy of Marketing Science, 32(4), 1-2, 2004.
Zinkhan, G.M., and Leigh, T.W. Assessing the Quality Rankings of the Journal of Advertising, 1986-1997.Journal of Advertising, 28(2), 51-70, 1999.
網站文獻
Journal Citation Reports http://portal.isiknowledge.com/portal.cgi?DestApp=JCR&Func=Frame
The Global Source for Periodicals
http://www.ulrichsweb.com/ulrichsweb/
THE ISI IMPACT FACTOR
http://scientific.thomson.com/free/essays/journalcitationreports/impactfactor/
The PageRank Algorithm
http://pr.efactory.de/e-pagerank-algorithm.shtml