Webometrics網路大學排名機制 資訊處 副資訊長 吳志忠.

Presentation on theme: "Webometrics網路大學排名機制 資訊處 副資訊長 吳志忠."— Presentation transcript:

1 Webometrics網路大學排名機制 資訊處 副資訊長 吳志忠

2 Core Webometrics --- Definitions
Webometrics顧名思義僅採計Web上能搜尋到資料的統計數據 Figure 3. Relationships between the LIS (Library and Information Science) fields of infor-/biblio-/sciento-/cyber-/webo-/metrics. Sizes of the overlapping ellipses are made for sake of clarity only. [1] Note: infor-biblio-webo-metrics lineage, infor-cyber-webo-metrics lineage of recorded information on Web servers

3 Webometrics Universities’ Ranking
西班牙National Research Council所屬Cybermetrics Lab的計畫 使用Webometrics Methodology對世界6000所大學進行排名,每年1月及7月公佈一次 最近一期排名排名全球前十名均位在美國, 有批評認只採計網路上資料量做排名不夠完整嚴謹, 但Webometrics之精神即在網路的資料統計, 其宗旨在於促進學術網路資料量的豐富性, 與Times Higher Education等傳統大學排名評比方式有所不同, 可以視其為另類的(Alternative)學術排名,該排名表現出一個學校在網路上的學術能量 雖有批評且歷史尚短, 但5年下來已普遍受全球學術界重視 台灣學校多有不俗表現, 最近一期排名台大為全球第26名,台灣計有14所學校排進全球前500名 未來發展將朝向分領域更細緻的排名方式(對小而優質的學校較公平)及更多元的統計資料來源(如多媒體數量)

4 Why It Matters? Webometrics排名代表一所學校透過搜尋引擎在網路上的學術能量與曝光可能性,各種指標的總合
新世代年輕人普遍以網路作為第一個了解某所學校或某個議題的工具 Webometrics排名對網路世代年輕人而言幾乎代表真正的學校排名！

5 Visibility Matters! 學術網站的權威性！！
就像一篇學術論文的權威性與Social Impact程度端視網站的Credibility 長期穩定累積學術資訊於網站上為絕對必要，當然累積的資訊必須能被無障礙近用與被搜尋引擎看見

6 Webometrics Methodology
Visibility 在本校以外其他網域中 出現本校網址連結的數量 (External Inlinks), 非流量 Size-本校網域下之網頁數量 Rich Files-本校網域之檔案數量 採計PDF, PPT, PS及DOC四種檔案格式 Scholar-透過Google Scholar在本校網域下可搜尋到的學術文章(件)數量

7 How to obtain webometrics data
Figure 2. Apis showing Google Search GUI

8 Search Engines and Syntax
Google Yahoo Visibility N/A “lst.nthu.edu.tw" -site:lst.nthu.edu.tw Size mse.ntu.edu.tw site:mse.ntu.edu.tw Rich File filetype:pdf or doc or ppt or ps Scholar nthu.edu.tw site:nthu.edu.tw NSN Live Exalead mse.ntu.edu.tw -site:mse.ntu.edu.tw math.nthu.edu.tw site:math.nthu.edu.tw (2009七月起排名不採計MSN Live) 微軟推出新搜尋引擎產品Bing之後是否採計尚未確定

9 SEO基本概念-搜尋引擎運作圖解

10 Decalogue of good practices in institutional web positioning(I)
- Recommended by Webometrics.info URL naming Contents: Create Contents: Convert Interlinking Language, especially English 1. URL naming Each institution should choose a unique institutional domain that can be used by all the websites of the institution. It is very important to avoid changing the institutional domain as it can generate confusion and it has a devastating effect on the visibility values. The alternative or mirror domains should be disregarded even when they redirection to the preferred one. Use of well known acronyms is correct but the institution should consider including descriptive word, like the name of the city, in the domain name. 2. Contents: Create A large web presence is made possible only with the effort of a large group of authors. The best way to do that is allowing a large proportion of staff, researchers or graduate students to be potential authors. A distributed system of authoring can be operative at several levels:  Central organisation can be responsible of the design guidelines and institutional information  Libraries, documentation centres and similar services can be responsible of large databases, including bibliographic ones but also large repositories (thesis, pre-prints, and reports)  Individual persons or teams should maintain their own websites, enriching them with self archiving practices. Hosting external resources can be interesting for third parties and increase the visibility: Conference websites, software repositories, scientific societies and their publications, especially electronic journals. 3. Contents: Convert Important resources are available in non electronic format that can be converted to web pages easily. Most of the universities have a long record of activities that can be published in historical web sites. Other resources are also candidate for conversion, including past activities reports or pictures collections. 4. Interlinking The Web is a hipertextual corpus with links connecting pages. If your contents are not known (bad design, limited information, or minority language), the size is scarce or they have low quality, the site probably will receive few links from other sites. Measuring and classifying the links from others can be insightful. You should expect links from your “natural” partners: Institutions from your locality or region, web directories from similar organisations, portals covering your topics, colleagues or partners personal pages. Your pages should make an impact in your common language community. Check for the orphaned pages, i.e. pages not linked from another. 5. Language, especially English The Web audience is truly global, so you should not think locally. Language versions, especially in English, are mandatory not only for the main pages, but for selected sections and specially from scientific documents.

11 Decalogue of good practices in institutional web positioning(II)
- Recommended by Webometrics.info Rich and media files Search engine friendly designs Popularity and statistics Archiving and persistence Standards for enriching sites 6. Rich and media files Although html is the standard format of web pages, sometimes it is better to use rich file formats like Adobe Acrobat pdf or MS Word doc as they allow a better distribution of documents. PostScript is a popular format in certain areas (physics, engineering, mathematics) but it can be difficult to open, so it is recommended to provide an alternative version in pdf format. Bandwidth is growing exponentially, so it is a good investment to archive all media materials produced in web repositories. Collections of videos, interviews, presentations, animated graphs, and even digital pictures could be very useful in the long term. 7. Search engine friendly designs Avoid cumbersome navigation menus based on Flash, Java or JavaScript that can block the robot access. Deep nested directories or complex interlinking can block robots too. Databases and even highly dynamic pages can be invisible for some search engines, so use directories or static pages instead or as an option. 8. Popularity and statistics Number of visits is important, but it as much as important to monitor their origin, distribution and the causes why they reach your web sites. Most of the current log analysers offer a great diversity of tables and graphs showing relevant demographic and geographic data, but make sure there is an option to show the referrers, the web pages from which the visit arrives or the search term or phrase used if the visit came from a search engine. Most popular pages or directories are also relevant. 9. Archiving and persistence To maintain a copy of old or outdated material in the site should be mandatory. Sometimes relevant information is lost when the site is redesigned or simply updated and there is no way to recover easily the vanished pages. 10. Standards for enriching sites The use of meaningful titles and descriptive metatags can increase the visibility of the pages. There are some standards like Dublin Core that can be used to add authoring info, keywords and other data about the web sites.

12 提升排名具體策略 正確網址命名及分派 網頁產生機制、檔案上傳及命名機制 SEO
教師論著、學生論文 授課大綱 學習歷程 作業繳交 SEO 連結策略(External Inlinks & Outbound Links)

13 系所網站 教師資料

14 教師授課大綱、論著查詢、學習歷程

15 Ranking of Universities of Taiwan
2009年一月 2009年七月 台大 55 / 1 26 / 1 成大 274 / 4 101 / 2 淡江 491 / 9 351 / 10 慈濟 624 / 24 高醫 1045 1024 / 38 陽明 1286 1283 / 46 立德 1312 / 49 北醫 1427 / 35 1402 / 53

16 visibility(50%) size(20%) rich files(15%) scholar(15%) Domain Date Y E M G DOC PPT PDF PS kmu.edu.tw 10/1 52625 3134 29500 171000 274060 1131 7490 8440 1010 30900 60 237 10/19 52062 3103 27800 436000 273142 1136 4610 8920 1090 8000 61 312 10/28 47896 3010 5900 467000 249477 1208 5630 8740 1070 7900 314 ym.edu.tw 56555 2683 124000 113000 125906 2535 54800 5460 493 4530 2 219 56272 2702 43700 392000 126314 2537 43400 5940 591 5370 263 50986 2708 66900 403000 119168 2621 29200 6120 643 6640 266 tmu.edu.tw 9/29 60882 679 20000 (3) (2) 94402 433 18800 3980 (3) 969 (2) 3680 (3) 0 (3) 151 (3) 61692 733 15200 (3) (1) 96057 432 16100 6770 (2) 3260 (1) 6520 (2) 155 (1) 305 (2) 62376 (1) 718 (3) 15500 (2) (1) 96107 (3) 468 (3) 18500 (2) 6450 (2) 2640 (1) 6360 (3) 1410 (1) 370 (1)

17 Thank You Webometrics Instant Query Rankings in Taiwan
Rankings in Taiwan