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CHI
2007
ACM
14 years 10 months ago
Why we tag: motivations for annotation in mobile and online media
Why do people tag? Users have mostly avoided annotating media such as photos ? both in desktop and mobile environments ? despite the many potential uses for annotations, including...
Morgan Ames, Mor Naaman
CHI
2001
ACM
14 years 10 months ago
Ignoring perfect knowledge in-the-world for imperfect knowledge in-the-head
Constraints and dependencies among the elements of embodied cognition form patterns or microstrategies of interactive behavior. Hard constraints determine which microstrategies ar...
Wayne D. Gray, Wai-Tat Fu
POPL
2008
ACM
14 years 10 months ago
Engineering formal metatheory
Machine-checked proofs of properties of programming languages have become a critical need, both for increased confidence in large and complex designs and as a foundation for techn...
Arthur Charguéraud, Benjamin C. Pierce, Bri...
SIGMOD
2007
ACM
196views Database» more  SIGMOD 2007»
14 years 10 months ago
Adaptive location constraint processing
An important problem for many location-based applications is the continuous evaluation of proximity relations among moving objects. These relations express whether a given set of ...
Zhengdao Xu, Hans-Arno Jacobsen
ICFP
2006
ACM
14 years 10 months ago
Extensible programming with first-class cases
We present language mechanisms for polymorphic, extensible records and their exact dual, polymorphic sums with extensible first-class cases. These features make it possible to eas...
Matthias Blume, Umut A. Acar, Wonseok Chae