Clifford A. Shaffer

Algorithm Visualization

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

Software Maintenance, Engineering, Visualization (Graphics) +17

Flexible collaboration transparency

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

Engineering, Flexible Jamm, Software Engineering +19

Optimal quadtree construction algorithms

Clifford A. Shaffer, Hanan Samet · Computer Vision Graphics and Image Processing · 1987 · 95 citations

Geometric Modeling, Mathematical Programming, Engineering +8

A geographic information system using quadtrees

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

Cartography, Geographic Information Systems, Data Science +5

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