I am interested in how individuals interact with data-intensive, complex and critical information artefacts such as electronic health records and ontologies. Little is known about how to make these interfaces easy to use, principally because the activities users carry out are not well understood. Conceiving and applying empirical methods to better understand the difficulties of the users, identifying the strategies employed to overcome these problems and discovering the activity patterns is the focus of my research.
In EPSRC funded "What if..." project, we are exploring how ontology authors overcome the difficulties encountered in the ontology development process. To do so, we are applying data-driven methods in order to identify the workflows of the authoring process. The ultimate goal of the whatif project is to build tools that conform to the identified workflowss. In the COPE project, we are investigating the similarities between edge-interaction cases undergone by able-bodied users and the coping situations faced by visually disabled users. We have found evidence suggesting there is an overlap between the problems and strategies employed by these two populations.
I received a PhD in Computer Science at the University of the Basque Country on web accessibility assessment, evaluation and measurement. I keep active in the field and publish papers about defining web accessibility, the limitations of web accessibility evaluation tools, the perception of web accessibility by proffessionals and the role of expectations on user tests.
I am a member of the W4A Conference steering committee and the W3C RDWG. The W3C Research Report on Web Accessibility Metrics is one of our latest efforts in disseminating scientific evidence into standardisation bodies.
- [May 18-20] WWW 2015 / W4A 2015, Florence (Italy)
- Paper on web sampling accepted to W4A 2015.
- Will chair the ASSETS 2015 Student Research Competition. Submit your entry before June 25.
markel . vigo at manchester . ac . uk
+44 (0) 161 275 0143
2.32 Kilburn Building
School of Computer Science
M13 9PL, Manchester (UK)
LATEST PAPERS — See all publications
We identify common activity patterns through analysis of eye-tracking data and the event logs of the popular authoring tool, Protégé. Informed by the activity patterns discovered, we propose design guidelines for bulk editing, efficient reasoning and increased situational awareness. Methodological implications go beyond the remit of knowledge artefacts: we establish a method for studying the usability of software designed for highly specialised complex domains.
Computers in Human Behavior
We examine the role played by subjectiveness, experience and expectations on how users perceive accessibility on the Web. Prejudices about branding, the memories evoked by past experiences and emotional bonds affect the way in which users perceive and experience not only accessibility, but also the overall user experience. This is relevant (i) to formalise better users testing protocols and (ii) to complement and complete existing accessibility guidelines.
International Journal of Human Computer Studies
The process of authoring ontologies is fragmented across several tools and workarounds, and there exists no well accepted framework for common authoring tasks. We present insights from an interview-based study with 15 ontology experts: we uncover the tensions that may emerge between ontology authors and identify the problems and the strategies the authors employ to solve them.