摘要：Software developers rely on the abundance of online resources to meet their informal learning needs.
Designing systems to effectively support this relies on a sound understanding of the informal learning
process. In this paper, we show how the development and implementation of an ontological model can be
used to increase understanding of informal learning needs and enhance system design. We interviewed
developers about their informal online learning behaviors, and created a novel ontological model, LILO
(Learning Informally Online), to represent user interaction with online learning resources by incorporating
the resulting concepts, typologies, and relationships. From this ontology, we derive five main design
requirements for an informal learning system for developers: keyword support, search support, resource
genre utilization, reliability cues, and objective support. We then demonstrate how the ontology can be
applied to advance system design using as an example CAN (Composable Accessibility Infrastructure), a
system capable of supporting web developers’ informal online learning.
关键词：Design; Ontology; Informal learning; Web development
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