Following rigorous peer review, the following 23 full papers have been accepted for COSIT'11.

• Jan Wilkening and Sara Irina Fabrikant
  How do decision time and realism affect map-based decision making?
• Felix Lindner and Carola Eschenbach
  Towards a Formalization of Social Spaces for Socially Aware Robots
• Lin-Jie Guan and Matt Duckham
  Decentralized reasoning about gradual changes of topological relationships between continuously evolving regions
• Kris Lohmann, Carola Eschenbach and Christopher Habel
  Linking Spatial Haptic Perception to Linguistic Representations: Assisting Utterances for Tactile-Map Explorations
• Kristin Stock and Claudia Cialone
  Universality, Language-Variability and Individuality: Defining Linguistic Building Blocks for Spatial Relations
• Makoto Takemiya and Toru Ishikawa
  I Can Tell by the Way You Use Your Walk: Real-Time Classification of Wayfinding Performance
• Holly A Taylor, Qi Wang, Stephanie A Gagnon, Keith B Maddox, and Tad T Brunyé
  The Social Connection in Mental Representations of Space: Explicit and Implicit Evidence
• Blake Stephen Howald and E Graham Katz
  On the explicit and implicit spatiotemporal architecture of narratives of personal experience
• Stephen Hirtle, Sabine Timpf and Thora Tenbrink
  The Effect of Activity on Relevance and Granularity for Navigation
• Linda Abarbanell, Rachel Montana and Peggy Li
  Revisiting the Plasticity of Human Spatial Cognition Plasticity of Human Spatial Cognition
• Thora Tenbrink and Werner Kuhn
  A formal model of spatial reference frames in language
• Takeshi Shirabe
  Information on the Consequence of a Move and Its Use for Route Improvisation Support
• Fathi Hamhoum and Christian Kray
  Scalable Navigation Support for Crowds: Personalized Guidance via Augmented Signage
• John Stell, Geraldine Del Mondo, Remy Thibaud and Christophe Claramunt
  Spatio-temporal Evolution as Bigraph Dynamics
• Narges Mahpeykar and Andrea Tyler
  The Semantics of Farsi be: Applying the Principled Polysemy model
• Muralikrishna Sridhar, Anthony G Cohn and David C Hogg
  From Video to RCC8: Exploiting a Distance Based Semantics to Stabilise the Interpretation of Mereotopological Relations
• Parvin Asadzadeh, Lars Kulik, Egemen Tanin and Tony Wirth
  On Optimal Arrangements of Binary Sensors
• Mehul Bhatt, Jae Hee Lee and Carl Schultz
  CLP(QS): A Declarative Spatial Reasoning Framework
• Christoph Mülligann, Krzysztof Janowicz, Mao Ye and Wang-Chien Lee
  Analyzing Spatial-Semantic Interaction of Points of Interest in Volunteered Geographic Information
• Giorgio De Felice, Paolo Fogliaroni and Jan Oliver Wallgrün
  A Hybrid Geometric-Qualitative Spatial Reasoning System and its Application in GIS
• Daniel R Montello and Danqing Xiao
  Linguistic and Cultural Universality of the Concept of Sense-of-Direction
• Malumbo Chipofya, Jia Wang and Angela Schwering
  Towards Cognitively Plausible Spatial Representations for Sketch Map Alignment
• Finite relativist geometry grounded in perceptual operations
  Simon Scheider, Werner Kuhn