1. Introduction to the Special Issue

   • Shu-Ching Chen
   • Agnès Voisard

   OriginalPaper Pages: 175 - 177

2. Analysis of Multi-Dimensional Space-Filling Curves

   • Mohamed F. Mokbel
   • Walid G. Aref
   • Ibrahim Kamel

   OriginalPaper Pages: 179 - 209

3. Efficient Estimation of Qualitative Topological Relations based on the Weighted Walkthroughs Model

   • Serafino Cicerone
   • Eliseo Clementini

   OriginalPaper Pages: 211 - 227

4. ICEAGE: Interactive Clustering and Exploration of Large and High-Dimensional Geodata

   • Diansheng Guo
   • Donna J. Peuquet
   • Mark Gahegan

   OriginalPaper Pages: 229 - 253

5. A Road Network Embedding Technique for K-Nearest Neighbor Search in Moving Object Databases

   • Cyrus Shahabi
   • Mohammad R. Kolahdouzan
   • Mehdi Sharifzadeh

   OriginalPaper Pages: 255 - 273