Reasoning with Cardinal Directions: An Efficient Algorithm. - Xiaotong Zhang; Weiming Liu 001; Sanjiang Li; Mingsheng Ying (AAAI, 2008)

Combining RCC-8 with Qualitative Direction Calculi: Algorithms and Complexity. - Weiming Liu 001; Sanjiang Li; Jochen Renz (IJCAI, 2009)

Topological Relations between Convex Regions. - Sanjiang Li; Weiming Liu 001 (AAAI, 2010)

Reasoning about cardinal directions between extended objects. - Weiming Liu 001; Xiaotong Zhang; Sanjiang Li; Mingsheng Ying (Artif. Intell., 2010)

Reasoning about Cardinal Directions between Extended Objects: The Hardness Result - Weiming Liu 001; Sanjiang Li (CoRR, 2010)

Solving Qualitative Constraints Involving Landmarks. - Weiming Liu 001; Sheng-Sheng Wang 001; Sanjiang Li; Dayou Liu (CP, 2011)

Reasoning about cardinal directions between extended objects: The NP-hardness result. - Weiming Liu 001; Sanjiang Li (Artif. Intell., 2011)

On A Semi-Automatic Method for Generating Composition Tables - Weiming Liu 001; Sanjiang Li (CoRR, 2011)

On standard models of fuzzy region connection calculus. - Weiming Liu 001; Sanjiang Li (Int. J. Approx. Reason., 2011)

Solving Minimal Constraint Networks in Qualitative Spatial and Temporal Reasoning. - Weiming Liu 001; Sanjiang Li (CP, 2012)

Here, There, but Not Everywhere: An Extended Framework for Qualitative Constraint Satisfaction. - Weiming Liu 001; Sanjiang Li (ECAI, 2012)

Qualitative constraint satisfaction problems: An extended framework with landmarks. - Sanjiang Li; Weiming Liu 001; Sheng-Sheng Wang 001 (Artif. Intell., 2013)

On Redundant Topological Constraints. - Matt Duckham; Sanjiang Li; Weiming Liu 001; Zhiguo Long (KR, 2014)

Reasoning about Topological and Cardinal Direction Relations Between 2-Dimensional Spatial Objects. - Anthony G. Cohn 001; Sanjiang Li; Weiming Liu 001; Jochen Renz (J. Artif. Intell. Res., 2014)

On redundant topological constraints. - Sanjiang Li; Zhiguo Long; Weiming Liu 001; Matt Duckham; Alan Both (Artif. Intell., 2015)

Cardinal directions: a comparison of direction relation matrix and objects interaction matrix. - Sanjiang Li; Weiming Liu 001 (Int. J. Geogr. Inf. Sci., 2015)

On Redundant Topological Constraints (Extended Abstract). - Sanjiang Li; Zhiguo Long; Weiming Liu 001; Matt Duckham; Alan Both (IJCAI, 2017)