DOI: 10.4018/JITR.2018100102 Journal of Information Technology Research Volume 11 • Issue 4 • October-December 2018 Copyright © 2018, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. 16 Operation Patterns in Recommendation Systems: Limitations, Functionalities and Performance in the Digital Environment José Antonio Cordón-García, Universidad de Salamanca, Salamanca, Spain Raquel Gómez-Díaz, Universidad de Salamanca, Salamanca, Spain Araceli García-Rodríguez, Universidad de Salamanca, Salamanca, Spain Taísa Dantas, Universidad de Salamanca, Salamanca, Spain ABSTRACT The main purpose of this article is to analyze different recommendation systems and examine how they are used within digital environments to establish classifications for books. Following a bibliographical review of recommendation systems, the performance of a number of book recommendation systems is tested. The systems tested are grouped according to whether recommendations are done by specialists, are based on social networking or use more complex statistical stylometry to help each reader find the reading materials best suited to them. Results indicate that progress in technology implementation is favoring the findability of books by combining the strengths of the various systems. The principal social implication of this research is that recommendation systems enable the reader’s optimized use of books, as well as allow the development of content appropriation systems. Concerning to originality and value is important to emphasize there is no previous known work establishing the taxonomy proposed in this paper. KEywORDS Author Recommendation, Discoverability, Publishing Recommendation, Reading and Technology, Reading and Visibility, Reading Recommendation Systems, Title Recommendation THE READING RECOMMENDATION SySTEMS The context in which books circulate nowadays is marked by competition with other media that tend to monopolize cultural consumption or, at least, to dilute it by displacing the predominant character books once had. Not only have the number of cultural media formats increased considerably in volume but the patterns of cultural media consumption in today’s society have also changed significantly. Such shifts are triggered by a general increase in leisure time, which is in turn related to the changes in our modes of communicative and cultural production that are geared toward filling this gap (Avilés- Ochoa & Cañizalez-Ramírez, 2015).