Clifford A. Shaffer

Algorithm Visualization

Clifford A. Shaffer, Matthew Cooper, Alexander Joel D. Alon et al. · ACM Transactions on Computing Education · 2010 · 190 citations

Computing, Computer Science, Visualization +7

Flexible collaboration transparency

Mary Beth Rosson, Clifford A. Shaffer · ACM Transactions on Computer-Human Interaction · 1999 · 177 citations · Full text

Computing, Computer Science, Computer Systems +16

Optimal quadtree construction algorithms

Clifford A. Shaffer, Hanan Samet · Computer Vision Graphics and Image Processing · 1987 · 96 citations

Computing, Computer Science, Algorithms +10

A geographic information system using quadtrees

Hanan Samet, Azriel Rosenfeld, Clifford A. Shaffer et al. · Pattern Recognition · 1984 · 90 citations

Computing, Computer Science, Geoinformatics +12

Design and architecture of an interactive eTextbook – The OpenDSA system

Eric Fouh, Ville Karavirta, Daniel A. Breakiron et al. · Science of Computer Programming · 2013 · 88 citations

Education, Computer Science, Educational Technology +8