Initiative 1 Accuracy of Spatial Databases (1988-1990) Michael Goodchild
Initiative 2 Languages of Spatial Relations (1989-1991) David Mark
Initiative 3 Multiple Representations (1989-1991) Barbara Buttenfield
Initiative 4 Use & Value of Geographic Information (1989-1992) Hugh Calkins & Harlan Onsrud
Initiative 5 Large Spatial Databases (1989-1992) Terence Smith & Andrew Frank
Initiative 6 Spatial Decision Support Systems (1990-1992) Michael Goodchild & Paul Densham
Initiative 7 Visualization of Spatial Data Quality (1991-1993) Kate Beard & Barbara Buttenfield
Initiative 8 Formalizing Cartographic Knowledge (1993-) Barbara Buttenfield
Initiative 9 Institutions Sharing Geographic Information (1992-) Harlan Onsrud & Gerard Rushton
Initiative 10 Spatio-Temporal Reasinong in GIS (1993-) Max Egenhofer & Reginald Golledge
Initiative 11 Cancelled
Initiative 12 Integration of Remote Sensing & GIS (1990-1993) Frank Davis, John Estes & Jeffrey Star
Initiative 13 User Interfaces for GIS (1991-1993) David Mark & Andrew Frank
Initiative 14 GIS & Spatial Analysis (1992-1994) Stewart Fotheringham & Peter Rogerson
Initiative 15 Multiple Roles for GIS in U.S. Global Change Research (1994-) Kate Beard, John Estes, Tim Foresman, Michael Goodchild, Jenny Robinson & Kenneth McGwire
Initiative 16 Law, Information Policy & Spatial Databases (1994-) Harlan Onsrud & Robert Reis
Initiative 17 Collaborative Spatial Decision-Making (1994-) Paul Densham, Marc Armstrong & Karen Kemp
Initiative 18 Changed to a conference
Initiative 19 The Social Implications of How People, Space & Environment are Represented in GIS (1995-) Trevor Harris & Daniel Weiner
Initiative 20 Interoperating GIS's (1996-) Max Egenhofer & Michael Goodchild
Initiative 21 Formal Models of the Common-Sense Geographic World (1996-) David Mark & Max Egenhofer