About me
Courses & Divulgation

  Academic Search Engines                     Since August 2016 in stores! You can order now in Amazon, Google Books, and Elsevier.



Bibliometric indicators

Web of Science


Google Scholar























About me

Hi! I am José Luis Ortega, web researcher. I started working as librarian in the Instituto de Estudios Giennenses in Jaén (2000-2002) and the Public Library of Cádiz (2002-2003). Then I achived a fellowship in the Cybermetrics Lab of the CSIC, thank to Isidro Aguillo where I finished my doctoral studies (2003-2008). In 2005, I was hired by the Virtual Knowledge Studio of the Royal Netherlands Academy of Sciences and Arts to develop several tasks for the WISER project. Now, I keep collaborating with the Cybermetrics Lab in research areas such as Webometrics, Web usage mining, Web demography, Visualization of Information, Network analysis, etc. I have recently launched a blog, The Scientific Web Observer, where I publish studies and notes on academic social networking sites and scholarly search engines.

Research lines

  • Research evaluation: as R&D Analyst of the CSIC I have written several internal reports and papers on the research activity of this organism, concretely, on patents [1] and research contracts. I have also worked with the CDTI analyzing the network collaboration in the 6th Framework Programme [2,3,4,5]. 
  • Quantitative web studies: during my participation in the Cybermetrics Lab, I developed some researches in several lines around the Web from a quantitative view.
    • Web usage studies: Using the web transaction logs, I have made some studies on the users’ behaviour in a web site as a way to improve the web architecture of the site [6]. I have studied if they spend more time in a site depending of if they came from a search engine query, a web link of from the root of the site [7]. Also, I graphed the path network of a website as a way to evaluate its web architecture [8].
    • Networks visualization: This was the main line; in fact, it was the theme of my PhD Thesis. I have made network maps of the European [9], Nordic [10], Ibero-american [11] and World-class [12] universities on the Web. The main result is that the university network graphs have scale-free and Small-worlds properties. The network is set up by local or regional sub-networks which are aggregated by geographical or linguistic criteria. These groups are linked between them through gateway universities that mediate between the sub-network and the main one.
    • Web demography: This line assumes that the web pages birth, grow and died. In this sense, I studied the age of the web as well as developed several indicators to measure the obsolescence of web spaces [13]. A longitudinal study showed that the Web grows in an irrational process and it increases destroying the previous Web [14].
    • University rankings: I have collaborated in the design and building of one of the most important University rankings, Ranking Web of World Universities. The methodology and the main highlights were published [15,16].
    • Web bibliometrics: This recent line is focused on the study of the research activity according to web-based services such as Google Scholar Citations and Microsoft Academic Search [19]. In this sense, I have made a Map of Science throught the label used by each profile [17] and a collaboration study at institutional and national level [18] using Google Scholar Citations. As a result, I published a book on academic search engines [20].
    • Altmetrics: this new field is devoted to explore the meaning of alternative indicators from academic social sites for research evaluation.

If you are interested in carrying out studies on academic search engines (Google Scholar or Microsoft Academic Search), social sites for scientists (ResearchGate, Academia.edu or Mendeley) or other relevant websites (repositories, web databases, journal sites, etc.), I would obtain and process data from those sites using ad hoc crawlers/harvesters. If you are willing to collaborate contact with me in jortega(at)orgc.csic.es, or follow me in @JLOrtegaPriego.

One of the most important hobbies is my love to the modern architecture of the XX and XXI Centuries, mainly the Modern Movement of the 20’s and 30’s. I have got a personal web site in
Flickr where I like to upload images of building that I photograph in my trips for Spain and Europe. My biggest satisfaction was that some of my pics were used in the "Architectuur en Alfabet " architecture exhibition at Leiden in 2009. Other hobbies are ridding in bike across Madrid, music, playing guitar and fencing.