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Numerous interaction techniques have been developed that make "virtual" pointing at targets in graphical user interfaces easier than analogous physical pointing tasks by invoking target-based interface modifications. These pointing facilitation techniques crucially depend on methods for estimating the relevance of potential targets. Unfortunately, many of the simple methods employed to date are inaccurate in common settings with many selectable targets in close proximity. In this paper, wedoi:10.1145/2166966.2166968 dblp:conf/iui/ZiebartDB12 fatcat:jkklmkk6gbhfhjeib2nbbcwwny